32results about How to "Suitable for industrial production promotion" patented technology

The invention discloses a method for treating 2-mercaptobenzothiazole production waste. The method comprises the steps of: heating the 2-mercaptobenzothiazole production waste to 90-95 DEG C, carrying out solid-liquid separation to obtain solid matter and liquid A, returning the solid matter to an accelerator M workshop, refining and purifying the solid matter to obtain a product accelerator M, distilling and separating the liquid A to obtain a fraction B and a fraction C, cooling residues in a distillation kettle to obtain asphalt-shaped matter D, absorbing hydrogen sulfide gas generated in the distillation separation process by using a sodium hydroxide solution to obtain a sodium hydrosulfide solution, concentrating the sodium hydrosulfide solution to obtain sodium hydrosulfide solids, rectifying and separating the fraction C to obtain aniline and benzothiazole. The method disclosed by the invention is capable of realizing the resourceful treatment of the 2-mercaptobenzothiazole production waste and has the advantages of various by-products, good product quality, simpleness in process flow, easiness in operation, mildness in reaction condition, low production cost and is environment-friendly.

The invention is a preparation method of polyurethane fiber with high modulus and high elasticity. In this method, firstly, acrylonitrile polymer is dissolved in an organic solvent to form a uniform and stable solution; then it is mixed and matured with a polyurethane solution to obtain a spinning stock solution; the spinning stock solution is evaporated in a high-temperature tunnel to remove the organic solvent to form a primary fiber , and then through false twisting, drafting, oiling, winding, and finally get spandex finished product. The spandex prepared by the present invention has the characteristics of high modulus, good resilience, and high elasticity retention rate; the spandex has smooth unwinding and low end-breakage rate during the use of high-speed empty bag and circular knitting, and can effectively improve the yarn quality. And the production efficiency of fabrics; the woven fabric samples are flat and uniform, with excellent elasticity, and can still maintain the original performance after processing such as setting and dyeing.

The invention discloses a benzomelamine-modified amino resin, which comprises the following components: 105 parts of liquid formaldehyde with a mass concentration of 37%, 22.5 parts of melamine with a mass concentration of 99.8%, and 3 parts of benzotriamine , 110 parts of methanol with a mass concentration of 90%-92%, 64 parts of methanol with a mass concentration of 98%, and 30 parts of reclaimed light methanol water with a mass concentration of 20%. This reclaimed light methanol water contains formaldehyde with a mass fraction of 10%. 2-13 parts of 36% hydrochloric acid, 3-18 parts of liquid caustic soda with a mass concentration of 30%; the benzomelamine modified amino resin of the present invention introduces benzotriamine, which reduces the overall molecular polarity and the solubility with organic solvents Increased, the miscibility with the matrix resin has been greatly improved, and the gloss, alkali resistance, water resistance, and heat resistance are all more advantageous than those of the prior art. It also has excellent electrophoretic advancement and excellent coating film Chemical resistance.

The invention discloses a recycling method of carbide slag, which comprises the following steps of: (1) reacting the carbide slag with the solution of sodium carbonate and filtering the reaction solution to obtain filtrate B and filter residue A, wherein the filtrate B is the solution of sodium hydroxide; (2) adding the filtrate A into hydrochloric acid, heating the mixture till the mixture boilsto perform a reaction, filtering the reaction solution to obtain a filter residue C and a filtrate D, wherein the filter residue C is used as clinker for cement production; and (3) adding hydrogen peroxide into the filtrate D to perform a reaction for 10 and 20 minutes, adjusting pH value of the reaction solution to 8.5 and 9.0 by using saturated lime water, filtering the reaction solution, drying the filter residue to obtain ferric hydroxide, concentrating the filtrate to precipitate a calcium chloride dehydrate solid, processing the obtained concentrated residual liquid by using the solution of sodium carbonate, filtering the mixed solution to obtain a solid mixture of magnesium carbonate and calcium carbonate, reacting the mixture react with the solution of sulphuric acid and filteringthe reaction solution to obtain calcium sulphate solids and the solution of magnesium sulfate. The resource processing method for the carbide slag has the advantages of various byproducts, high product quality, simple process flow, small equipment investment, easy operation, mild reaction conditions, low production cost, environmental friendliness and wide application prospect.

The invention relates to a reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as a main material and a preparation method thereof. The technical scheme is as follows: grinding ferrotitanium slag globules until the granularity is less than or equal to 100 mu m, putting the ferrotitanium slag powder into a muffle furnace, and incinerating at a temperature of 700-750 DEG C for 3-5 hours; adding 1-3mol / L hydrochloric acid solution into the incinerated ferrotitanium slag powder, wherein the mass ratio of the incinerated ferrotitanium slag powder to the hydrochloric acid solution is 1:(2-3); stirring, washing with water and performing suction filtration, thereby obtaining precursor ferrotitanium slag powder; then adding water which accounts for 10-15wt% of the precursor ferrotitanium slag powder into the precursor ferrotitanium slag powder, performing wet grinding until the granularity is less than or equal to 60 mu m, performing vacuum mud extrusion molding, and ageing the mixture for 36-48 hours; and putting the mixture into a resistance furnace, heating to 1500-1550 DEG C, performing heat preservation for 1-3 hours, and crushing, thereby obtaining the reproducible high-aluminum fireproof raw material utilizing the ferrotitanium slag as the main material. The preparation method has the characteristics of simple process, low production cost and no special requirements on equipment; and the prepared reproducible high-aluminum fireproof raw material is high in fire resistance and favorable in sintering performance.

The invention relates to a mullite raw material adopting alumina-chrome slag as a main ingredient and a preparation method thereof. According to the technical scheme, the method comprises the steps that the alumina-chrome slag is placed into a muffle furnace, and calcination is performed under the temperature of 700-750 DEG C for 3-5 h to obtain calcined alumina-chrome slag; the calcined alumina-chrome slag, silica powder and aluminite powder are mixed on the basis that the mass ratio of the calcined alumina-chrome slag to the silica powder to the aluminite powder is 100:(16.0-16.5):(2.0-4.5) for 15-20 min, and a mixed material is obtained; the mixed material is placed into an electromagnetic induction furnace, the temperature is increased to 1,800-1,840 DEG C and kept constant for 2-3 h; then, an upper scum layer is separated out, furnace cooling is performed to the room temperature, and crushing is performed to obtain the synthesis mullite raw material adopting the alumina-chrome slag as the main ingredient. The alumina-chrome slag contains main chemical components: 80-85 wt% of Al2O3, 10-15 wt% of Cr2O3 and not larger than 1 wt% of Fe2O3. The technology is simple, the production cost is low, and no special requirement for equipment is needed; the prepared mullite raw material adopting the alumina-chrome slag as the main ingredient is high in refractoriness, good in sintering performance and high in mullite conversion rate.

The invention relates to the technical field of organic synthesis, in particular to dimercaptosuccinic acid and salt thereof and a preparation method. The preparation method comprises the following steps: carrying out reaction on ethyl xanthate and 2,3-dibromosuccinic acid, so that 2,3-diethyl xanthate-1,4 succinic acid is obtained; hydrolyzing the 2,3-diethyl xanthate-1,4 succinic acid, so that 2,3-dimercaptosuccinate solution is obtained; and acidifying the obtained 2,3-dimercaptosuccinate solution, so that 2,3-dimercaptosuccinic acid is obtained. The preparation method provided by the invention has the advantages that technology is simple, liquid-state thioacetic acid with strong odor and unstable quality does not need to be used, unsafe addition reaction does not need to be carried out, preparation period is short, yield is high, cost is low, and the dimercaptosuccinic acid can be applicable to industrial production and popularization and can be further prepared into a dimercaptosuccinate product. The dimercaptosuccinic acid product and the dimercaptosuccinate product are high in purity and low in cost.

The invention provides a pyrolysis treatment process for organic solid waste, which includes the following steps: (1) pretreatment: drying and pulverizing the organic solid waste; (2) pyrolysis: discarding the pretreated organic solid waste After the pyrolysis treatment, solid products and gas products are obtained; (3) cracking and reforming: the gas products after pyrolysis enter the reforming furnace, and are cracked and reformed under the action of the catalyst; (4) post-treatment : the gas produced after cracking and reforming is cooled and purified, the present invention eliminates the organic pollution factors in the organic solid waste, the solid product can be handed over to the building material production unit for use as a raw material or auxiliary agent, and the gas product can be used as a fuel to reduce and avoid It eliminates the pollution of waste to the environment in industrial production activities, and has remarkable environmental benefits, social benefits and economic benefits.

The invention provides a Yunzhi Schisandra extract, a preparation method and application thereof, and relates to the field of traditional Chinese medicines. The raw material of the Yunzhi Schisandra extract is composed of Yunzhi and Schisandra, and the mass ratio of Yunzhi and Schisandra It is (400-800): (80-160), the invention can solve the technical problems that traditional single-component traditional Chinese medicine liver protection products have poor curative effect and that long-term use of western medicine will cause new side effects such as liver damage. The invention provides Yunzhi schisandra extract is obtained by extracting Yunzhi and schisandra, not only has significant prevention and treatment of alcoholic liver damage and chemical (carbon tetrachloride) liver damage, but also has less side effects when taken for a long time, and at the same time The preparation method is simple, easy to operate, low in cost, suitable for industrial production and popularization, and has broad application prospects.

The invention discloses a preparation method and application of a corrosion-resistant super-hydrophobic stainless steel mesh. The oil-water separation mesh uses stainless steel mesh as a base material, and adopts a resin bonding method to firmly bond modified fly ash to the base On the material skeleton, corrosion-resistant super-hydrophobic stainless steel mesh is obtained after curing. The corrosion-resistant stainless steel mesh of the present invention still maintains high superhydrophobic durability after 100 wear tests. The corrosion-resistant stainless steel mesh of the present invention can be applied in the fields of separation of oil / water mixture and treatment of oily wastewater, and continuous oil-water separation can be realized by building a device, the treatment capacity of oil-water mixture is large, the operation is simple, and the separation effect is good. The corrosion-resistant oil-water separation stainless steel mesh of the present invention has a simple preparation process, the whole production cycle is as low as 5 hours, and the preparation raw materials are cheap and easy to obtain, and the environment is friendly, which is convenient for industrial large-scale batch production, and has high economic benefits and practical value.