49results about How to "Expand the industrial chain" patented technology

The invention belongs to the technical field of the recycling of fungus chaff from edible fungus cultivation, and in particular relates to a method for preparing soil for flowers by using edible fungus chaff. In the method, dried and crushed edible fungus chaff is uniformly mixed with auxiliary raw materials, the mixed raw material is fermented, the fermented mixed raw material is subjected to pH value adjustment and sterilization, and thus the soil for flowers is obtained. In the method, processed edible fungus chaff are used as a raw material for the soil for flowers, the original various nutrients and trace elements of the fungus chaff are retained, and thick, hard and wide fibers in the fungus chaff become short, loose and soft after the fermentation; and thus, the method improves the aggregate structure, organic matter content and fertility level of the soil, makes the nutrition of the soil for flowers more balance, contributes to the growth of flowers and trees, as well as promotes the improvement in the resistance against diseases and the quality of flowers.

The invention relates to a biological preparation, in particular to a Trichodrema spp. microbial agent and a preparation method thereof. The method comprises the following steps: the dried and crushed 8-9 edible fungus chaff according to parts by weight is mixed with 2-4 auxiliary material according to parts by weight, the acidity-alkalinity pH of the mixed raw material is adjusted to 5.0-6.5, then the Trichodrema spp. suspension with 5-10 percent of mass ratio with the mixed raw material is inoculated to the mixed raw material and cultured for 7-10 days at the temperature of 8-30 DEG C, and after the Trichodrema spp. is generated, the well cultured material is dried and crushed to obtain Trichodrema spp. microbial agent. The invention takes the treated edible fungus chaff as the raw material to produce the Trichodrema spp. microbial agent, fully utilizes the rest nutritious substance in the edible fungus chaff as well as the characteristics of loose and permeability of the fungus chaff, promotes the value in use of the fungus chaff of the edible fungus, and simultaneously reduces the production cost of the Trichodrema spp. microbial agent, the produced Trichodrema spp. is mainly chlamydospore, the multiplication capacity and the colonizing capacity of the Trichodrema spp. in the microbial agent are enhanced, the capability of resisting the unfavorable environmental conditions is also enhanced and the survival time of the Trichodrema spp. is prolonged.

The invention discloses an agricultural waste anaerobic-aerobic balanced fermentation method. The fermentation method comprises the following steps of 1, adding an inoculum into smashed agricultural waste to be subjected to anaerobic fermentation; 2, regarding methane generated through anaerobic fermentation as domestic gas, and separating materials to obtain biogas residue; 3, adding adjuvant materials into the biogas residue to be subjected to aerobic fermentation to obtain biological humic acid fertilizer. By means of the produced biological humic acid fertilizer, through anaerobic fermentation and high-temperature composting, harmless treatment is fully achieved, spreading of diseases and insect pests is effectively controlled, and the occurrence probability of the diseases and insectpests in the subsequent growth process of plants applied with organic fertilizer is also lowered. The agricultural waste is efficiently reutilized to produce organic fertilizer, the industry chain ofthe agricultural waste is expanded, the resource utilizing link is prolonged, and the method powerfully drives the agricultural recycling economy.

The invention discloses eyesight-improving spleen-tonifying pearl Poria honey. The eyesight-improving spleen-tonifying pearl Poria honey is prepared by using the following raw materials in parts by weight: 6 to 7 parts of distillers' grains, 13 to 15 parts of clam meat mash, 3 to 4 parts of pearl powder, 14 to 15 parts of loquat, 4 to 5 parts of sesame, 2 to 2.3 parts of Poria, 1.7 to 2 parts of flatstem milkvetch seeds, 1.1 to 2 parts of radish seeds, 150 to 200 parts of honey, 60 to 70 parts of Eleutherococcus sessiliflorus fruits, 1.9 to 2 parts of sodium alginate, 1.7 to 1.8 parts of chitosan, 1.2 to 1.4 parts of calcium chloride and 50 to 60 parts of acetic acid with concentration of 1 to 2 percent. Eleutherococcus sessiliflorus anthocyanin prepared by using the Eleutherococcus sessiliflorus fruits has very good efficacies of resisting oxidation, mutation and tumors, protecting heart and blood vessels, improving eyesight, resisting radiation, improving immune and the like; since the anthocyanin is embedded in a closed capsule by adopting a microencapsulation technique, original bioactivity is better maintained, a certain slow release effect is achieved, the application range of Eleutherococcus sessiliflorus anthocyanin is expanded and the industrial chain of Eleutherococcus sessiliflorus is widened.

The invention relates to a ganoderma lucidum antler culture medium utilizing domestic garbage and a method for cultivating the ganoderma lucidum antler. The culture medium is prepared from the following ingredients in parts by weight: 50 to 60 parts of domestic garbage powder, 50 to 70 parts of wood chips, corn cores and / or cotton seed hulls, 15 to 20 parts of wheat bran, 2 to 3 parts of saccharose, 0.2 to 0.4 part of urea, 2 to 4 parts of gypsum and 2 to 3 parts of lime. The useless domestic garbage is applied to the field of medicinal fungus production, meanwhile, the substitute material cultivation mode of the ganoderma lucidum antler being the highest-grade lucid ganoderma is realized, and the industrial cultivation of the ganoderma lucidum antler is favorably realized. The domestic garbage is used in the ganoderma lucidum antler production; the problems of environment pollution and the like due to improper disposal modes and low utilization rate of the traditional domestic garbage treatment are solved; the extremely high practical value is realized.

The invention relates to a lyophyllum fumosurn culture medium using fermented bran and a method for cultivating lyophyllum fumosurn. According to the technical scheme, the lyophyllum fumosurn culture medium is composed of, by weight, 45-55 parts of fermented bran, 20-30 parts of straw and / or corn stalk, 10-15 parts of corncob, 10-15 parts of wheat bran, 1-5 parts of turfy soil, 1-2 parts of gypsum powder and 1-2 parts of quick lime. Compared with an existing application production formula, the cost of raw materials can be lowered by about 45%-60%, the hypha growth rate and the biomass are normal, economic benefits are quite obvious, and large-scale popularization can be realized. By means of the lyophyllum fumosurn culture medium using the fermented bran and the method for cultivating lyophyllum fumosurn, the pollution to the environment by the fermented bran can be eliminated, waste can be recycled, and the advantages of being comprehensive in nutrient, free of pollution, low in cost, easy to operate and short in generation period are achieved. Meanwhile, integrated development of the lyophyllum fumosurn wild domestication technology is promoted.

Disclosed is a method for preparing protein feedstuff addictive by utilizing edible fungus circulatory cultivation bran, which comprises steam flash evaporation, microorganism enzyme hydrolysis, multiple proportioning, cultivating edible mushrooms in circulation, reusing the discarded bacterium bran, crushing and carrying out micro-organism hybrid fermentation treatment. Calculated by weight ratio, each 100 parts of the bacterium block is charged by 21.58-58.25 parts of findings and 30-50 parts of water, then is inoculated with 5-10 parts of saccharomycete and 5-10 parts of wood mildew for culturing 2-3 days at 28-32 deg. C.

The invention particularly relates to an ammonium sulfate production system and a preparation method thereof. The ammonium sulfate production system comprises a saturator for generating ammonium sulfate. The ammonium sulfate production system is characterized in that the saturator is respectively connected with an exhaust output device for outputting ammonia-containing exhaust generated by an cyanuric acid device, a mother solution tank containing sulfuric acid, and a cooling absorption tower for removing ammonia in the exhaust; the cooling absorption tower is also connected with a concentrated acid water output device for outputting concentrated acid water generated by the cyanuric acid device, and the mother solution tank; and the saturator is also sequentially connected with a dual-effect evaporator, a crystallization kettle, a centrifugal machine and a drier. The invention fully utilizes waste heat of flue gas, and cancels the existing hot blast furnace for drying ammonium sulfate. The waste acid water is sufficiently recycled; and the invention greatly enhances the saturation degree of the ammonium sulfate solution, and uses the dual-effect evaporator instead of the original single-effect kettle-type evaporation device, thereby greatly lowering the vapor consumption.

The invention relates to a lightweight container seedling culture medium containing needle mushroom bran. The lightweight container seedling culture medium consists of the needle mushroom bran, grass carbon and rice hulls in a volume ratio of (2-4):(3-5):(2-4) and azophoska of 1.5-2.5kg / m<3>. The lightweight container seedling culture medium provided by the invention has the beneficial effects that (1) the needle mushroom bran is a waste material generated during the production of needle mushrooms, and is prepared into a seedling substrate after being fermented and decomposed, so that the problem of environmental pollution caused by stacking of the needle mushroom bran can be solved, natural resources are well utilized, a good culture medium is provided for the seedling industry, and meanwhile the industry chain of edible fungi is expanded; and (2) while the quality of container seedlings is ensured, the needle mushroom bran is used for replacing part of the grass carbon to ensure that the usage amount of the grass carbon is reduced to 36-42% from the traditional 60%. The reduction of the usage amount of the grass carbon reduces the production cost of the container seedlings, and a production process and an operation method of the container seedlings are not needed to be changed.

The invention discloses a method for preparing a lead ion adsorbing agent. The method includes the steps: smashing bagasse, adding sodium hydroxide solution into smashed bagasse, soaking the smashed bagasse, washing the soaked bagasse with water to be neutral to obtain bagasse cellulose, adding acrylic acid-maleic anhydride copolymer into the bagasse cellulose and modifying the bagasse cellulose to obtain modified bagasse; adding sargassum thunbergii powder and thiourea into an ultrasonic mixer, adding an appropriate amount of water into the mixer, performing ultrasonic reaction and placing reacted paste into a baking oven for heating and drying to obtain modified sargassum thunbergii powder; adding the modified bagasse and the modified sargassum thunbergii powder into the mixer, adding ceric ammonium nitrate solution and starch into the mixer, adding water into the mixer, blending the mixture into paste, placing the paste into a microwave heating device, cooling the heated paste to the room temperature and grinding the cooled paste to obtain the lead ion adsorbing agent. The prepared adsorbing agent has the advantages of extensive raw material source, low cost, large specific surface area, high adsorption capacity and adsorption efficiency, simple preparation process, environmental protection, easiness in degradation, excellent lead ion adsorption performance, wide market prospects in wastewater treatment and the like.

The invention belongs to the field of biological feed processing, and particularly discloses a preparation method of rabbit manure biological feed. The preparation method comprises the following steps: preparing slurry from rabbit manure powder and a water extraction concentrate of residue of edible mushrooms at the weight ratio of 1:(5-15), placing the slurry at the temperature of 80-90 DEG C, carrying out the Maillard reaction for 36-50 hours, adding a compound microorganism bacterium accounting for 4-8 percent by weight of the slurry, culturing and fermenting for 72-150 hours under the conditions that the temperature is 26-40 DEG C, the stirring speed is 50-180 rpm and the ventilatory capacity is 1:(0.3-1.5)V / V / min, carrying out vacuum concentration on the fermented slurry into thick paste under the conditions that the temperature is 33-36 DEG C and the pressure is -0.065-0.095 MPa, then carrying out low-temperature vacuum drying till the water content is 6-8%, smashing and screening, carrying out dry-type vertical compression pelletizing to obtain the rabbit manure biological feed. According to the preparation method, the efficient utilization of the residue of the edible mushrooms can be achieved, the application value of the rabbit manures as the feed is improved, waste resources are used to the hilt, the industrial chain is expanded, the comprehensive utilization benefits of edible mushrooms cultivation and the meat rabbit breeding industry waste are increased, the economic benefits are increased, and the ecological environment is protected.

The invention discloses a high-strength wood-plastic board and a preparation method thereof. The high-strength wood-plastic board comprises components in parts by weight as follows: 50-80 parts of sisal dregs, 40-80 parts of waste plastics, 10-25 parts of modified phenolic resin, 6-10 parts of mineral fiber, 5-10 parts of pentalyn, 8-12 parts of nano calcium carbonate and 8-15 parts of an auxiliary. The preparation method comprises technological steps of modification pretreatment, high-speed mixing, hot-press molding and cooling for sizing. Comprehensive utilization of resources of the sisal dregs is realized, the prepared wood-plastic board has high compressive strength and wear resistance, the cost is reduced, and the service life of the wood-plastic board is long. The high-strength wood-plastic board and the preparation method have the advantages of simpleness in processing technology, short processing time, low cost and the like, and the wood-plastic board is applicable to industrial production.

The invention discloses a method for preparing biomass briquetting fuel from sisal hemp residues. Sisal hemp residue powder, magnesium oxide, manganese ore slag, starch, cerous sulfate, sodium carboxymethylcellulose mucilage and epoxy asphalt with the weight ratio of 100:(8-12):(5-10):(10-15):(2-4):(10-15):(5-8) are adopted as raw materials, and the biomass briquetting fuel is prepared through the procedures of smashing, forming, drying and the like. The method has the advantages that the preparation process is simple, energy consumption is low, production efficiency is high, the forming rate is high, and cost is low, the prepared biomass fuel is low in density, high in heat value, low in ash content, not prone to looseness, good in moisture resistance, capable of being saved for a long time and suitable for industrial production, and internal gaps of the product are small.

The invention discloses a production method of artemisia selengensis tea. The method comprises eight main steps of picking raw materials, performing rinsing, performing spreading for airing, performing fixation, performing cutting-off, performing rolling, performing drying and performing packaging so that the artemisia selengensis tea is obtained. According to the production method disclosed by the invention, tender artemisia selengensis leaves are broad in sources and low in cost, the production method is simple and easy to operate, and the produced artemisia selengensis tea is good in appearance and high in the content of health-care components. The production method disclosed by the invention has great significance in the respects of increasing the added value of the planting of artemisia selengensis, widening the industry chain of the artemisia selengensis, efficiently utilizing vegetable waste, alleviating environmental pressure and the like, and economic benefits, social benefits and ecological benefits are significant.

The invention relates to the field of microorganisms and provides a preparation method of a botrytis cinerea agent. The preparation method comprises the following steps: (1) preparation of a solid-state culture medium; (2) inoculation of botrytis cinerea; (3) solid-state fermentation; (4) spore collection. The botrytis cinerea agent is produced by utilizing solid-state fermentation of wine lees, the wine lees can be recycled, and the production cost of the botrytis cinerea agent is greatly reduced; meanwhile, the physiological activity of the prepared botrytis cinerea agent is stable, the spore content of the botrytis cinerea agent reaches 10<8>-10<10>CFU / g, and the method is suitable for large-scale production operation.

The process of preparing protein feed additive with mushroom leftover includes crushing mushroom leftover with bag eliminated, fermentation and drying, and features the flash evaporation of crushed mushroom leftover before fermentation and the mixed microbial fermentation. The process can eliminate harmful metabolism product, toxin and pollutant microbe from mushroom leftover, crack and decompose cellulose in the material and form optimized protein and other nutritious components, and the protein feed additive can improve the taste and attraction of feed. The present invention may be used in treating various kinds of mushroom leftover to provide cheap concentrated feed while eliminating relevant environmental pollution.

The invention discloses red date protein honey capable of moistening the lung and tonifying qi. The red date protein honey is prepared from the following raw materials in parts by weight: 13-14 parts of fresh minced fish, 4-6 parts of longans, 9-11 parts of wax gourd peels, 7-8 parts of red dates, 2-2.3 parts of tussilago, 1.8-1.9 parts of diospyros lotus, 1-2 parts of lotus stems, 150-200 parts of honey, 60-70 parts of acanthopanax brachypus seeds, 1.9-2 parts of sodium alginate, 1.7-1.8 parts of chitosan, 1.2-1.4 parts of calcium chloride and 50-60 parts of 1%-2% acetic acid. Acanthopanax brachypus seed anthocyanin prepared from the acanthopanax brachypus seeds has the very good effects of resisting oxidization, resisting mutation, resisting cancers, protecting cardio-cerebral blood vessels, improving the eyesight, resisting radiation, improving the immunity and the like; the acanthopanax brachypus seed anthocyanin is buried into a sealed capsule by adopting a microcapsule technology, original biological activity is kept very well and the capsule has a certain slow release effect; and the utilization range of the acanthopanax brachypus seed anthocyanin is expanded and an industrial chain of acanthopanax brachypus is widened.

The invention discloses a qi rectifying lotus rhizome honey. The qi rectifying lotus rhizome honey is produced from, by weight, 11-13 parts of yoghourt, 8-9 parts of chestnut kernels, 5-6 parts of sweet osmanthus, 9-12 parts of lotus rhizome, 3-4 parts of sesame seed powder, 1.1-2 parts of tangerine pith, 1.8-2 parts of Calendula officinalis, 1.3-2 parts of Cacumen Platycladi, 150-200 parts of honey, 60-70 parts of Acanthopanax Sessiliflorum Seem fruits, 1.9-2 parts of sodium alginate, 1.7-1.8 parts of chitosan, 1.2-1.4 parts of calcium chloride and 50-60 parts of 1-2% acetic acid. Acanthopanax Sessiliflorum Seem fruit anthocyanin produced from the Acanthopanax Sessiliflorum Seem fruits has very good oxidation prevention, mutation prevention, tumor prevention, heart and cerebral vessel protection, eyesight improvement, radiation prevention and immunity enhancement effects, and is encapsulated in a closed capsule through adopting a microencapsulation technology to well keep original bioactivity and realize a certain slow release effect, so the use range of the Acanthopanax Sessiliflorum Seem fruit anthocyanin is enlarged, and the Acanthopanax Sessiliflorum Seem industry chain is widened.

The invention discloses a method capable of simultaneously preparing avermectin B2a fine powder and ointment. The method includes the steps of avermectin B1a crystallized mother liquor concentrating and solvent removal, water washing, cooling crystallization, centrifugation, avermectin B2a fine powder preparation, recrystallized mother liquor vacuum evaporation and solvent removal, methanol addingfor adjustment to obtain B2a ointment and the like. According to the method, by studying the B2a component, screening solvents and optimizing the production process, the B2a component fine powder isextracted and the B2a ointment is obtained; due to the fact that the B2a component is extracted from a B1a extraction by-product, the method can expand the avermectin industrial chain.

The invention discloses an anti-alcohol and liver-protecting acanthopanax fruit honey, which is prepared from the following raw materials in parts by weight: 12 to 13 parts of silky fowl meat, 3 to 4 parts of grape seeds, 6 to 7 parts of chopped peanuts, 7 to 8 parts of salt black beans, 10 to 12 parts of coconut milk, 1.3 to 2.4 parts of common andrographis herb leaves, 0.8 to 1.1 parts of dogbane leaves, 1 to 2 parts of Limonium sinense (Girard) Kuntze, 150 to 200 parts of honey, 60 to 70 parts of sessileflower acanthopanax fruit, 1.9 to 2 parts of sodium alginate, 1.7 to 1.8 parts of chitosan, 1.2 to 1.4 parts of calcium chloride, and 50 to 60 parts of 1 to 2% of acetic acid. The sessileflower acanthopanax fruit anthocyanin prepared by the sessileflower acanthopanax fruit has very good efficacies of oxidation resistance, mutation resistance, tumor resistance, cardiovascular protection, eyesight improvement, radiation resistance, and immunity improvement, and is embedded in a sealed capsule by using a microcapsule technology, so that the original biological activity is kept and the sessileflower acanthopanax fruit anthocyanin has a certain slow-release effect, and thus the service range of sessileflower acanthopanax fruit anthocyanin is extended, and the industrial chain of sessileflower acanthopanax is broadened.

The invention discloses a sleep-assisting angelica sinensis honey which is prepared from the following raw materials in part by weight: 7-9 parts of fish eggs, 4-6 parts of ground coffee, 3-5 parts of arabian jasmine flowers, 10-12 parts of kelps, 1-2.4 parts of mango leaves, 1.8-2 parts of rhodiola rosea, 1.1-2 parts of angelica sinensis, 150-200 parts of honey, 60-70 parts of short stalk slender acanthopanax, 1.9-2 parts of sodium alginate tech grade, 1.7-1.8 parts of chitosan, 1.2-1.4 parts of calcium chloride and 50-60 parts of 1-2% acetic acid. According to the invention, the short stalk slender acanthopanax anthocyanin prepared from the short stalk slender acanthopanax has the excellent effects of oxidation resistance, mutation resistance, tumor resistance, heart and cerebral vessel protection, eyesight improvement, radiation resistance, immune promotion, and the like; a micro-capsulary technique is adopted for embedding in an airtight capsule; the original biological activity is better maintained and the sleep-assisting angelica sinensis honey has a certain releasing effect; the use scope of the short stalk slender acanthopanax anthocyanin is widened and the industry chain of the short stalk slender acanthopanax is widened.

The invention belongs to the field of flower culture medium, and provides butterfly orchid culture medium and a preparation method thereof aiming at the defects that the traditional edible fungus chaff waste is in idle pollution, and the existing butterfly orchid culture medium cannot meet the required nutrient of growth of the butterfly orchid. The culture medium is prepared from the following raw materials in parts by weight: 35-50 parts of fungus chaff, 35-50 parts of water plants or moss, 10-20 parts of fallen leaves, 0.8-1.2 parts of superphosphate and 0.12-0.18 part of HM complex microbial inoculants in mixing and fermenting manners. The preparation method comprises the following steps: mixing the processed edible fungus chaff, water plants or moss, fallen leaves and HM complex microbial inoculants at the ratio, and then stacking into a material pile to ferment; drying to prepare the special culture medium for the butterfly orchid. The method is good in applicability and simple in process, resource waste of the edible fungus chaff is reduced, the culture medium has good drainage permeability, and can ensure the nutritional requirements of the butterfly orchid free of an extra fertilizer, growth can be promoted, and the quality is improved.

The invention relates to a new energy fuel prepared from alcohols in the sugar refinery industry. The fuel is prepared from 40-50 kg of methanol, 10-15 kg of ethanol, 50-200 g of oxalic acid and 50-100 g of ethyl acetate; and the methanol and ethanol are alcohols extracted in the sugar refinery industry. The fuel oil obtained in the invention can be sufficiently burnt, has a high flash point, alsocan be fully burned at a low temperature, generates no smoke or odor during burning, also has the advantages of energy saving, environmental protection, expanding of the industrial chain of the sugarindustry, solving of the cost problem of fuel oil, no odor, safety in use, and avoiding of explosions and other accidents without sealing, can be directly packaged in ordinary plastic bottles and plastic barrels, is very suitable for being used outdoors and at home, avoids gas poisoning, explosions and other accidents, and has excellent economic, ecological and social benefits.

The invention discloses a kidney-tonifying and eyesight-improving rice wine honey. The kidney-tonifying and eyesight-improving rice wine honey is produced from, by weight, 9-12 parts of carrots, 3-4 parts of laver, 12-13 parts of rice wine, 8-10 parts of yolk powder, 2-2.3 parts of , 0.8-2 parts of wolfberry leaves, 1.9-2 parts of pumpkin leaves, 150-200 parts of honey, 60-70 parts of Acanthopanax Sessiliflorum Seem fruits, 1.9-2 parts of sodium alginate, 1.7-1.8 parts of chitosan, 1.2-1.4 parts of calcium chloride and 50-60 parts of 1-2% acetic acid. Acanthopanax Sessiliflorum Seem fruit anthocyanin produced from the Acanthopanax Sessiliflorum Seem fruits has very good oxidation prevention, mutation prevention, tumor prevention, heart and cerebral vessel protection, eyesight improvement, radiation prevention and immunity enhancement effects, and is encapsulated in a closed capsule through adopting a microencapsulation technology to well keep original bioactivity and realize a certain slow release effect, so the use range of the Acanthopanax Sessiliflorum Seem fruit anthocyanin is enlarged, and the Acanthopanax Sessiliflorum Seem industry chain is widened.

The invention discloses an anaerobic-aerobic balanced fermentation method for agricultural waste. The fermentation method comprises the following steps: (1) adding an inoculum to the pulverized agricultural waste for anaerobic fermentation; (2) using the biogas generated by the anaerobic fermentation as domestic gas, and separating the material to obtain biogas residue; (3) ) adding auxiliary materials to biogas residue for aerobic fermentation to obtain biological humic acid fertilizer. The biological humic acid fertilizer produced by the invention is completely harmless through anaerobic fermentation and high-temperature composting, effectively controls the spread of diseases and insect pests, and also reduces the occurrence probability of diseases and insect pests in the subsequent growth process of plants applied with the organic fertilizer. The invention utilizes the agricultural waste to produce organic fertilizer, which is an efficient reuse of the agricultural waste, expands the industrial chain of the agricultural waste, prolongs the link of resource utilization, and is a powerful impetus to the agricultural circular economy.

The invention belongs to the technical field of producing metallurgical reducing gas, and relates to a method for producing methane-enriched gas from industrial exhaust gas containing carbon and hydrogen, in particular to a process for producing metallurgical reducing gas and co-producing liquefied natural gas by using coke oven gas. The process uses coke oven gas as raw material, and is pre-purified to remove impurities such as tar and naphthalene, and then sent to the gas cabinet for buffering, compressor pressurization, deep purification to remove tar and naphthalene, TSA process to remove benzene and ammonia, and liquefy Pre-purification removes CO2, H2S and water, and then undergoes membrane separation to obtain rich H2. The remaining gas enters the liquefaction unit, and separates to obtain carbon monoxide gas and by-product liquid methane. The invention makes full use of the coke oven gas resource, produces LNG by-product while obtaining the metallurgical reducing gas, and has obvious economic benefits.