47results about How to "To achieve the purpose of resource recycling" patented technology

The invention belongs to the technical field of polymer materials and relates to a method for preparing a recyclable biological packaging material. The method forms the material by using starch, plant fibers and an additive as raw materials and by granulating in a double screw extruder and die pressing. The Packaging material comprises 50 to 70 mass parts of starch, 15 to 30 mass parts of plant fibers and 5 to 20 mass parts of additive. The preparation method comprises the following steps: (1) weighing the raw material, stirring the weighed raw material in a stirrer for 3 to 5 minutes, uniformly mixing and obtaining a mixture; (2) graduating the mixture in a double screw extruder, extruding from an extruding die, and obtaining a granular material or product mother batch, wherein the rotation speed of the screw is 100 to 120r / min, the extrusion temperature is 100 to 120 DEG C and the feeding speed is 100r / min; and (3) filling the extruded granular material in a flat plate vulcanizer, and die pressing the granular material to obtain the recyclable biological packaging material, wherein the die pressing time is 15 minutes, and the die pressing temperature is 120 to 140 DEG C. The overall process is simple, the used raw materials are readily available, the equipment technology is mature, the degrading performance of the recyclable biological packaging material is high, the utilization rate of the recyclable biological packaging material is high, and the recyclable biological packaging material is environment-friendly.

The invention relates to a technology for recovering and utilizing mother liquor generated during the process of glycine production through a chloroacetic acid method, and belongs to the technical field of glycine production. The glycine mother liquor is condensed and burned, and then the glycine mother liquid is subjected to a crystallization treatment. The burning temperature and crystallization temperature are controlled at a specific value so as to maximally reduce the ammonium chloride consumption, the recovery rate of ammonium chloride can reach 95% or more, the high quality ammonium chloride in the glycine mother liquor can be maximally recovered and reutilized, thus the environmental pollution is reduced, and the economic profit is increased at the same time. The technology also has the advantages of simple equipment and technology, and convenient operation.

The invention discloses a molecular sieve synthesis mother solution using method. The molecular sieve synthesis mother solution using method comprises the following steps: 1, conducting settling separation on a suspended matter of a mother solution to obtain a supernatant liquor, wherein the content of the suspended manner in the supernatant liquor is less than 0.1 g / L; 2, adding lime milk into the supernatant liquor obtained in the step 1), desiliconizing, wherein the content of SiO2 in the desiliconized supernatant liquor is less than or equal to 0.5 g / L; 3, taking the supernatant liquor desiliconized in the step 2) as a clinker in the sintering-process aluminum oxide production technique to dissolve out a regulating solution. The molecular sieve synthesis mother solution using method has the following beneficial effects: the problem that the caustic alkali in the molecular sieve synthesis mother solution cannot be recycled is solved, and the problems of the environment risks that the caustic alkali is directly neutralized by sulfuric acid and is discharged are changed. The method directly combines the production process of a molecular sieve with the production process of aluminum oxide, by removing the silicon in the solution, the molecular sieve synthesis mother solution is desiliconized to dissolve out the clinker, and the dissolved sodium metaaluminate solution is taken as a raw material in the synthesis of the molecular sieve, so that the purposes of recycling of the resources and zero emission are fulfilled.

The invention discloses a water saving device system for efficiently eliminating mist and recycling industrial water. The system comprises an aggregative condensing system, a two-stage inertial separation system and a condensed water recycling system, wherein the aggregative condensing system comprises spray-washing condensing devices, water receiving grid plates and a water receiving tank; the two-stage inertial separation system comprises reverse spray-washing condensing devices, a waveform inertial separator and a mesh mist eliminator; the condensed water recycling system comprises a condensed water conveying pipeline and a condensed water storage pool; the aggregative condensing system and the two-stage inertial separation system are arranged in a cooling tower; a condensed water drainage pipeline, the spray-washing condensing devices, the reverse spray-washing condensing devices and a water receiving tank washing device are connected with the condensed water storage pool through the condensed water conveying pipeline. The system disclosed by the invention has the advantages that actions of all forces among water molecules in mist can be effectively broken out, the mist is prevented from being condensed into water droplets and reflowing to a tail gas inlet pipeline, industrial water is recycled, and the purpose of recycling resources is achieved.

The invention discloses a production method of sylvinite. The production method of sylvinite comprises the following steps: proportioning potassium-containing to-be-treated waste liquor and to-be-treated wastewater to obtain a potassium-containing mother liquor; dissolving carnallite raw ores by the potassium-containing mother liquor to obtain ore pulp; and filtering the ore pulp to obtain the sylvinite. By proportioning the waste liquor and the wastewater to obtain the potassium-containing mother liquor and dissolving the carnallite raw ores by the potassium-containing mother liquor, magnesium chloride is dissolved massively and magnesium chloride is separated out in a saturated manner by means of a common ion effect, so that the sylvinite containing relatively high potassium quantity andmeeting the demands of refining potassium chloride is obtained, and water resources are saved. Influences on control 0f a follow-up production process and energy conservation and emission reduction are reduced as far as possible. Moreover, the carnallite raw ores are dissolved by the potassium-containing mother liquor, so that the baume degree of the ore pulp is increased, and the load of equipment is alleviated, therefore, the energy consumption and the loss of the equipment are further reduced to achieve the purpose of recycling resources, and the economical benefit is improved.

The invention relates to the technical fields of environmental protection and circular economy, and concretely relates to a use method of a special production device used for floridin. The method is characterized in that boiler tail gas used as a circulating fluidized bed coal-fired boiler fly ash conveying and activating medium and providing heat energy needed by activation and sulfuric acid used as an activator complete an activation process in an activation tower assembly, circulating fluidized bed coal-fired boiler fly ash is separated from acid fog tail gas in a gas box pulse bag type trap, an elevator I conveys the circulating fluidized bed coal-fired boiler fly ash to a rotary rinsing cylinder in order to make the fly ash be rinsed, the rinsed fly ash is dehydrated by a centrifuge dehydrator, and the dehydrated circulating fluidized bed coal-fired boiler fly ash which enters a secondary activating and drying rotary furnace through an elevator II undergoes secondary activation and drying under the action of the boiler tail gas used as the activating medium and providing heat energy. The device has the advantages of high automation degree, realization of integral intelligent enforcement of various complex process flows, and simplicity in operation and use.

A method for separating and recovering crystallized phenol from a phenol-containing dilute solution comprises the following steps: circulating and introducing low-concentration phenol waste water or a solution into a pervaporation device, enriching phenol steam into a low-vacuum phenol collector cooled by liquid nitrogen by using a pervaporation membrane with excellent selectivity to phenol, adding a metal wire mesh filler into the collector as a substrate for phenol crystallization. The invention can be used for treatment of waste water containing low-concentration phenol and can recover crystallized phenol; no chemical reagent is needed to be added, which eliminates secondary pollution; the invention realizes energy saving, emission reduction and resource recovery of waste water, and isenvironment-friendly high-efficient separation technology.

The invention is a water-saving device system for efficiently removing mist and recovering industrial water, which includes a polycondensation system, a two-stage inertial separation system and a condensate recovery system. The polycondensation system includes a spray washing condensing device, a water receiving grid and a water receiving tank; the two-stage inertial separation system includes a reverse spray washing condensing device, a wave inertia separator, and a wire mesh demister; the condensed water recovery system includes condensed water Conveying pipeline, condensed water storage tank. The aggregated condensation system and the two-stage inertial separation system are arranged in the cooling tower, and the condensed water drainage pipe, spray washing condensing device, reverse spray washing condensing device and sink flushing device are connected to the condensed water storage tank through the condensed water delivery pipeline . The invention effectively breaks the effects of various forces between water molecules in the water mist, prevents the condensed water droplets of the water mist from flowing back into the tail gas inlet pipe, recycles industrial water, and achieves the purpose of resource recovery and utilization.

The invention relates to a novel roof greening matrix and a roof greening method. The greening matrix comprises a core matrix and an auxiliary matrix, wherein the core matrix comprises a sludge compost product, garden waste fibers and a water retaining agent according to the weight ratio of (35-43):(55-65):(1-1.2); the auxiliary matrix comprises vermiculite and perlite; a ratio of the total weight of the core matrix to the weight of the vermiculite to the weight of the perlite is (68-82):(3-7):(15-25). The matrix provided by the invention can meet a roof greening soil utilization requirement, and sludge of a sewage treatment plant and garden waste can be effectively eliminated, and the aim of resource circulation is fulfilled; meanwhile, the greening matrix is light in material weight; raw materials are readily available; the cost is low; the fertilizer and water retaining effect is good; finally, the matrix is changed from a conventional state into a granular state, so that the problem of matrix loss can be effectively solved, and a slow release effect can be achieved; the growth of plant roots is facilitated; the specific construction and operation are facilitated; the novel roof greening matrix is suitable for the general popularization in the whole nation.

The invention belongs to the fields of comprehensive resource recycle and superfine metal pre-alloyed powder preparation, and particularly relates to a comprehensive resource recycling method for a waste diamond tool. The method comprises the following steps: firstly, reclaiming diamond and tungsten carbide grains from the waste diamond tool through acid dipping and filtering processes; and detecting components of leachate by adopting atomic absorption spectrum, adjusting the components and the concentration by adding corresponding soluble salt and deionized water into the leachate, and preparing superfine pre-alloyed powder through various non-ferrous metals in the mother solution by adopting a chemical coprecipitation-reduction process. The method can furthest reclaim the diamond and tungsten carbide grains from the waste diamond tool; the prepared superfine pre-alloyed powder can be directly applied to the production of the diamond tools; and the method avoids the complex metal ionseparation processes such as extraction and impurity removal and the like adopted in the traditional metal reclamation, has the characteristics of simple process, low cost and the like, and is easy for industrialized mass production.

The invention discloses a method of recycling organic substances from polyurethane synthetic leather waste gas. In the method, an ionic liquid and a liquid ester are employed as special absorbers. In an absorption column, cooled synthetic leather waste gas which flows countercurrent is treated in a low-temperature spray manner, wherein organic substances, such as methylbenzene, butanone and DMF, in the waste gas are absorbed by a low-temperature absorber. The absorber then is fed into a desorption column to carry out desorption and separation to recycle the methylbenzene and butanone, and then is fed into a pressure-reduced distillation column to carry out desorption and separation to recycle the DMF. The special absorber contains 50-70% of the ionic liquid, 5-25% of dibutyl terephthalate, 15-25% of butylene terephthalate and 5-15% of ethylene glycol m-phthalate. The special absorber is more than 300 DEG C in boiling point and is suitable for absorbing the methylbenzene, butanone and DMF. The method can recycle the DMF and the methylbenzene at high recycle efficiency, wherein the recycled DMF is more than 99% in purity and low-boiling-point organic substances, such as the recycled methyl and butanone, are more than 99.5% in purity.

The invention discloses a molecular sieve synthesis mother solution using method. The molecular sieve synthesis mother solution using method comprises the following steps: 1, conducting settling separation on a suspended matter of a mother solution to obtain a supernatant liquor, wherein the content of the suspended manner in the supernatant liquor is less than 0.1 g / L; 2, adding lime milk into the supernatant liquor obtained in the step 1), desiliconizing, wherein the content of SiO2 in the desiliconized supernatant liquor is less than or equal to 0.5 g / L; 3, taking the supernatant liquor desiliconized in the step 2) as a clinker in the sintering-process aluminum oxide production technique to dissolve out a regulating solution. The molecular sieve synthesis mother solution using method has the following beneficial effects: the problem that the caustic alkali in the molecular sieve synthesis mother solution cannot be recycled is solved, and the problems of the environment risks that the caustic alkali is directly neutralized by sulfuric acid and is discharged are changed. The method directly combines the production process of a molecular sieve with the production process of aluminum oxide, by removing the silicon in the solution, the molecular sieve synthesis mother solution is desiliconized to dissolve out the clinker, and the dissolved sodium metaaluminate solution is taken as a raw material in the synthesis of the molecular sieve, so that the purposes of recycling of the resources and zero emission are fulfilled.

The invention discloses a method of synthesizing a nano zinc silicate light emitting material by using waste silicon powder by a hydrothermal method. The method comprises the following steps: (1) dissolving Zn(CH3COO)2.2H2O, Mn(NO3)2.4H2O and hexadecyl trimethyl ammonium bromide in deionized water, adding the waste silicon powder, stirring for 15 minutes, adding sodium hydroxide or ammonium water with concentration being 25%, and stirring for 10 minutes to obtain a mixed solution; (2) putting the mixed solution prepared in the step (1) in a reaction kettle with the liner being polytetrafluoroethylene, sealing the reaction kettle, putting the kettle in an oven at 130-200 DEG C to react for 12-48 hours, taking, naturally cooling to room temperature, washing the product by distilled water. carrying out centrifugal separation, and naturally drying to obtain the zinc silicate light emitting material. By using waste silicon powder as a raw material, the method disclosed by the invention expands the range of reactants and can fully utilize industrial leftovers and achieve the purpose of recycling resources. Furthermore, the method disclosed by the invention which is a hydrothermal one-step reaction is simple and feasible and low in energy consumption.

The invention relates to an oil sludge modifier and its preparation method and application. The oil sludge modifier contains the following components in mass percentage: auxiliary materials, 50-66.5%; curing agent, 13-27.5%; calcium oxide, 3-10%; bentonite, 3-15%; cement, 0.3-5%; auxiliary materials It is agricultural and forestry organic waste and / or industrial solid waste. The method is as follows: uniformly mix methacryloyloxyethyl chloride, dimethyl diallyl chloride, acrylamide and carboxymethyl cellulose to obtain a curing agent; add auxiliary materials, calcium oxide , bentonite and cement and mix uniformly to obtain a sludge modifier. The oil sludge modifier in the present invention can fully realize the harmless, clean and resourceful treatment of the oil sludge in the oily sludge in the oil sludge modification treatment, and the fly ash produced after the oil sludge fuel block is burned is leached. The contents of heavy metals and dioxins are extremely low, and can be discharged directly without secondary treatment.