906 results about "Acid water" patented technology

The invention discloses ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete comprises the following components in percentage by mass: 15%-25% of cement, 3%-6% of nano SiO2, 30%-35% of fly ash or steel slag powder, 35%-40% of recycled aggregate, 1%-4% of fiber, 0.5% of a microbial remediation agent and 1%-3% of nano TiO2. The preparation method comprises the following steps: S1, pretreating the recycled aggregate; and S2, packaging the microbial remediation agent: mixing the bacillus pasteurii spores with calcium lactate, and wrapping the mixture in calcium phosphate microspheres. S3, step-by-step stirring; S3.1, dry mixing: uniformly stirring the cement, the fly ash, the nano SiO2, the nano TiO2 and the recycled aggregate; s3.2, wet mixing is carried out, water solution fibers containing the polycarboxylic acid water reducing agent are added, uniform stirring is carried out, and the water-binder ratio of the water solution containing the polycarboxylic acid water reducing agent is 0.18; s3.3, final mixing: adding the packaged microbial remediation agent, and uniformly stirring; and S4, directional curing: performing steam curing at 80 DEG C for 48 hours, performing ultraviolet irradiation, and performing constant-temperature and constant-humidity curing for 7 days. The ultra-high performance concrete has the effects of low cost, low carbon emission, multi-function integration and repeatable crack self-repairing.

The invention provides a modified coal gangue-based large-flow-state grouting and water plugging material and a preparation method thereof. Comprising 80-90 parts of a coal gangue sample, 1-5 parts of Portland cement, 1-5 parts of sulphoaluminate cement, 0.51-3 parts of a polycarboxylic acid water reducing agent, 1-4 parts of cellulose ether with the viscosity of 200w, 0.1-5 parts of a calcium oxide expanding agent, 0.5-5 parts of a plastic expanding agent, 0.5-1 part of redispersible latex powder, 0.5-5 parts of polyacrylamide with the molecular weight of 1000 and water, and the water-material ratio is 0.4. According to the modified coal gangue-based large-flow-state grouting and water plugging material and the preparation method thereof, the cement consumption can be remarkably reduced, the cost is reduced, the utilization rate of solid wastes (such as coal gangue) is increased, and the material has good flow-state performance and adjustable setting time; the method is suitable for deep and large shaft surrounding rock water seepage treatment in coal mining and other mine engineering.

A method for efficiently and safely cleaning an apparatus for a tin compound and a highly purified apparatus for a tin compound are provided. A method of cleaning an apparatus that has been in contact with a tin compound having formula (1) includes at least steps (A) to (C) in this order:(A) a step of cleaning the apparatus with a non-protonic solvent,(B) a step of cleaning the apparatus with an acidic aqueous solution and / or alkaline aqueous solution, and(C) a step of cleaning the apparatus with ultrapure water having a resistivity of 17 MΩ·cm at 25° C.RpSnXm  (1)R is a hydrocarbon group, p is an integer of 0 to 3, X is a hydrolyzable substituent, and m=4-p.

The invention relates to the technical field of water treatment, and discloses a direct spraying type waste heat recovery acidic water treatment method. The method comprises the following steps: arranging a pH value difference sensor group and a conductivity sensor at a joint of a buried pipe cold storage system and a direct-spraying type waste heat recovery device, and monitoring the whole process of acid water treatment in real time to obtain water quality change data of the acid water; performing filtering treatment and working condition matching analysis on the acid water quality change data and the system operation parameters to obtain a cold storage-acid water treatment cooperation mode; performing thermochemical coupling analysis through the hyperboloid mapping network to obtain a corrosion risk assessment result; and executing the heat exchange efficiency and pH value adjustment dual-constraint optimization model according to a corrosion risk assessment result, and outputting an anti-corrosion control strategy. According to the method, the complex nonlinear relation between the pH value change and the temperature gradient can be accurately captured, the accuracy of corrosion risk prediction is greatly improved, and damage to equipment caused by corrosion is effectively avoided.

The invention discloses high-performance fluid-state solidified soil for backfill based on composite ardealite of building residue soil, which is prepared by taking the building residue soil as a core raw material, taking a compound of a polycarboxylic acid water reducer and hydroxypropyl methyl cellulose as a fluidization regulator, and mixing the fluidization regulator and the building residue soil to prepare the high-performance fluid-state solidified soil for backfill. Superfine slag powder, fly ash, nano silicon dioxide, metakaolin and ardealite are used as curing agents, so that the fluid-state solidified soil with strong performance is obtained. Through the synergistic effect of all the components and innovative processes such as liquid nitrogen low-temperature grinding, nano material compounding and a segmented vacuum stirring process, the effect that the ultrahigh strength of the construction waste soil reaches 7.5 MPa within 14 days is achieved for the first time and is improved by 40% or above compared with that of conventional solidified soil, and the industrial problem that traditional waste soil is insufficient in solidification strength is solved; and collaborative optimization of strength and fluidity is realized. Meanwhile, efficient resource utilization of the construction waste is achieved, land occupation and environmental pollution caused by muck landfill are greatly reduced, and the requirement for green and sustainable development is met.

The invention discloses a chlorobenzene wastewater continuous stripping purification recovery device and an implementation method, the chlorobenzene wastewater continuous stripping purification recovery device comprises an aeration tank, an alkali water washing system, an acid water washing system, an acid-base neutralization system and a ferric hydroxide separation system, the aeration tank is connected with the alkali water washing system, the acid water washing system is connected with the alkali water washing system, and the acid water washing system is connected with the ferric hydroxide separation system. The acid-base neutralization system is connected with the alkali-water washing system, the acid-water washing system and the ferric hydroxide separation system, and the alkali-water washing system and the acid-water washing system are both in two-stage steam stripping, and have the following advantages: alkali washing water and acid washing water generated in the chlorobenzene production process are subjected to two-stage nitrogen steam stripping, so that the content of organic matters is greatly reduced; ferric hydroxide is generated through neutralization of acid-alkali wastewater, the total amount of the wastewater is reduced, then the ferric hydroxide reacts with hydrochloric acid in the pickling water to generate ferric trichloride, hydrochloric acid is neutralized, the neutralization product ferric hydroxide is consumed, the wastewater amount is reduced, and recycling of wastewater resources is achieved.

The invention discloses multi-scale toughened full-solid-waste ultrahigh-ductility concrete, which is prepared from the following raw materials in parts by weight: 500 to 650 parts of full-solid-waste cementing materials, 110 to 150 parts of calcined coal gasification slag, 190 to 250 parts of calcined fly ash, 20 to 40 parts of silica fume, 10 to 30 parts of metakaolin, 780 to 930 parts of washed sand, 10 to 25 parts of fly ash fibers, 0.6 to 0.9 part of hydroxypropyl methyl cellulose, 20 to 30 parts of polycarboxylic acid water reducing agents and 300 to 400 parts of water. The calcined coal gasification slag is subjected to gradient heating to 800-960 DEG C, heat preservation is conducted for 30-60 min, then the calcined coal gasification slag is cooled to the room temperature at the cooling rate of 10-15 DEG C / min, and the calcined coal gasification slag is obtained after powder grinding. According to the multi-scale toughened full-solid-waste ultrahigh-ductility concrete provided by the invention, the toughness and the mechanical property of the concrete can be enhanced, the performance of the concrete in an extreme environment is improved, meanwhile, the solid waste utilization rate is increased, and the production cost of the concrete is reduced.

The utility model relates to a system for reducing the acid value of hydrolysate in the separation and washing process of dimethyl dichlorosilane hydrolysate. Comprising three stages of coalescers, dimethyl dichlorosilane acidic hydrolysate enters the system from the first stage of coalescer, process water enters the system from the third stage of coalescer, the acidic hydrolysate and diluted hydrochloric acid or process water are mixed in each stage of coalescer, oil-water two-phase separation is completed through multiple times of washing and coalescence, and meanwhile the acid value of the hydrolysate is reduced; each stage of coalescer comprises two static mixers connected in series, a group of prefilters and a large coalescer, the coalescer is Z-shaped, and four stages of filter elements are arranged in each stage of coalescer. Through repeated tests, a modified polyvinylidene fluoride filter element of Pall Company is finally selected, and after continuous three-stage coalescer treatment, the acid value of dimethyldichlorosilane hydrolysate can be reduced to 10 PPM or below.

The invention discloses a nano composite cement-based material and a preparation method, and belongs to the technical field of cement-based rapid repairing materials, the material comprises the following components by weight: 1000-1200 parts of high belite sulphoaluminate cement, 525-700 parts of nano activated fly ash, 465-600 parts of superfine slag, 45-78 parts of steel fiber, 28-63 parts of an expanding agent, 15-30 parts of a temperature-sensitive polycarboxylic acid water reducer, 78-95 parts of self-repairing microcapsules, and 284-325 parts of water. Wherein the self-repairing microcapsule is of a double-capsule-core and double-capsule-wall structure. The preparation method comprises the following steps: preparing the self-repairing microcapsule, mixing the cementing material, adding the water reducing agent and water, stirring, adding the microcapsule and the expanding agent, stirring, curing and the like. According to the invention, through a synergistic enhancement technology of a composite gel system, a multi-dimensional enhanced network and an environmental response technology, the material has the characteristics of rapid hardening and early strength, can be demolded within 2 hours, and solves the problems of long initial setting time, poor crack resistance, lack of self-repairing capability, high maintenance frequency and the like in repairing of the airfield pavement in the arid region.

The invention belongs to the technical field of building materials, and particularly relates to a micro-expansion anti-cracking waterproof composite deep groove filler and a preparation method thereof. The micro-bulking anti-cracking waterproof composite deep groove filler provided by the invention comprises cement, gypsum, mineral powder, nano silicon oxide, coarse aggregate, fine aggregate, modified fibers, an expanding agent, a polycarboxylate superplasticizer and water. According to the invention, polyacrylamide, calcium sulphoaluminate and magnesium oxide are adopted to jointly form an expanding agent, and early-stage-late-stage full-period shrinkage compensation is jointly formed in a concrete hydration process, so that the density of the concrete is effectively improved, and the waterproof performance of the concrete is further improved; according to the invention, sodium dodecyl benzene sulfonate and propylene glycol block polyether are adopted to carry out compound modification on graphene oxide, and gamma-aminopropyltriethoxysilane is connected to the surface of basalt fiber, so that the bonding strength of basalt fiber and a cement matrix and the compactness of the cement matrix are improved, and the waterproof and anti-cracking properties of concrete are further improved.

The invention discloses anti-cracking concrete and a preparation method thereof, and the anti-cracking concrete is prepared from the following raw materials in parts by weight: 400-450 parts of cement, 600-700 parts of fine aggregate, 900-1000 parts of gravel, 70-80 parts of a composite additive, 30-40 parts of modified fiber, 4-5 parts of a water reducing agent and 160-180 parts of water, the composite additive is prepared from fly ash, modified sepiolite, calcium sulphoaluminate and an air entraining agent; the modified sepiolite is obtained by taking sepiolite as a raw material, pretreating the sepiolite through a silane coupling agent and then sequentially reacting the pretreated sepiolite with sulfanilamide and dodecyl chloride. According to the invention, through the synergistic effect of the composite additive and the modified fiber, the comprehensive improvement of the crack resistance and mechanical strength of the concrete is realized, in the composite additive, the moderate expansion of calcium sulphoaluminate compensates the early shrinkage stress, the microbubble system formed by the air entraining agent relieves the stress concentration, and the dispersion effect of the polycarboxylate superplasticizer is matched, so that the crack resistance and mechanical strength of the concrete are improved. The hardened body forms a compact and uniform microstructure, and the tensile strength of the concrete is improved.

A dehydrogenation reaction device includes a chemical hydride storage unit including a chemical hydride storage tank, a reaction unit including an acid aqueous solution storage tank, and a dehydrogenation reactor configured to generate hydrogen by reacting a chemical hydride with an acid aqueous solution, and a hydrogen storage unit including a hydrogen storage tank configured to store the hydrogen produced in the dehydrogenation reactor. The dehydrogenation reactor includes a body portion made of a metal and a reinforcement portion surrounding the outer surface of the body portion and including fiber reinforced plastic (FRP).

The invention discloses a super-early-strength shrinkage-free high-crack-resistance tunnel spraying repair material in the technical field of civil engineering materials, which comprises the following raw materials in percentage by mass: 35-45% of sulphoaluminate cement; 8%-12% of a superfine early strength admixture; 2%-3% of a calcium sulphoaluminate expanding agent; 1%-2% of a magnesium oxide-based expanding agent; 1-2% of a calcium-magnesium composite expanding agent; 10%-15% of hollow glass beads; 1.5%-2.5% of copper plated steel fiber; 0.1%-0.3% of polypropylene fiber; 25%-30% of graded quartz sand; 0.5%-1.0% of a polycarboxylic acid water reducing agent; 3%-5% of an alkali-free liquid accelerator; 0.3%-0.8% of a thixotropic agent; and 0.1%-0.3% of a thickening time control agent. According to the method, a multi-scale performance cooperative regulation system is innovatively constructed. Through accurate control of the hydration process of a gel system, a shrinkage stress multi-stage compensation mechanism and systematic integration of a fiber-matrix interface strengthening technology, the mutual restriction relationship among early strength development, volume stability and crack resistance of a traditional material is broken through.

The invention discloses an anti-cracking cement mortar containing slag and a preparation method thereof, and relates to the technical field of slag cement mortars.The anti-cracking cement mortar is prepared from, by mass, 100 parts of a slag cement raw material, 39-44.5 parts of water, 0.6-1 part of a polycarboxylic acid water reducing agent, 0.3-0.5 part of a super absorbent polymer, 4-5 parts of an exciting agent and 0.03-0.05 part of multi-walled carbon nanotubes; the preparation method of the anti-cracking cement mortar comprises the following steps: premixing the slag cement raw material, the super absorbent polymer and the multi-walled carbon nanotubes for 1-2 minutes, sequentially adding the water, the polycarboxylic acid water reducing agent and the exciting agent, mixing at a low speed for 1-2 minutes, and mixing at a high speed for 3-5 minutes to obtain the anti-cracking cement mortar.

The invention relates to the technical field of building materials, in particular to light water-resistant phosphogypsum-based cement concrete mortar and a preparation process thereof. The phosphogypsum-based cement concrete mortar comprises the following components: activated phosphogypsum, sulphoaluminate cement, magnesium phosphate cement, modified zeolite powder, lightweight aggregate, modified nano silicon dioxide, a core-shell toughening agent, a polycarboxylate superplasticizer and water, and the preparation method comprises the following steps: respectively preparing the activated phosphogypsum, the modified zeolite powder, the modified nano silicon dioxide and the core-shell toughening agent; the water resistance of the ardealite is improved through activating treatment, the interface bonding force and the structural compactness are enhanced through multi-component synergism by means of selective adsorption of the modified zeolite powder, the mechanical property of the lightweight aggregate is optimized, the toughness is improved through the core-shell toughening agent, and lightweight, high water resistance, stable performance and durability improvement of the mortar are achieved; the requirements of complex building scenes are met, and environment-friendly and practical values are achieved.

The invention belongs to the technical field of constructional engineering materials, and particularly relates to anti-corrosion concrete as well as a preparation method and application thereof. The anti-corrosion concrete is prepared from the following raw materials: Portland cement, fly ash, mineral powder, coarse sand, gravel, a polycarboxylic acid water reducer, an early strength agent, an air entraining agent, imidazolium ionic liquid and carbon modified g-C3N4. The imidazolium ionic liquid and the carbon modified g-C3N4 are added into the concrete, so that the compressive strength and the corrosion resistance of the concrete can be coordinately improved, and the prepared concrete is particularly suitable for the fields of municipal drainage systems and the like with high corrosion resistance requirements on concrete materials.

The invention discloses a water-based nano anti-crack waterproof agent for concrete and a preparation method of the water-based nano anti-crack waterproof agent, and relates to the field of building materials. 10 to 25% of a silane emulsion; 20-40% of an acrylate copolymer emulsion; 0.5 to 5% of modified nano cellulose; 3-8% of a polycarboxylic acid water reducer; 0.1-1% of a defoaming agent; and the balance of water. Nano silica sol permeates concrete capillary pores and participates in a hydration reaction to improve the compactness of a matrix, a three-dimensional toughening network is constructed in cooperation with oriented crosslinking of carboxyl on the surface of TEMPO oxidized nano cellulose and gamma-aminopropyl silane, and micro cracks are covered with a flexible sealing layer formed by an acrylate copolymer. Active inhibition of cracks and long-acting blocking of water are synergistically realized, shearing force is regulated and controlled in a segmented manner through a stepped stirring process, the demulsification risk of an emulsion is avoided, and the storage stability of a system is remarkably improved.

The invention relates to the technical field of building material processing, in particular to a granulation processing device for a polycarboxylate superplasticizer and an assembly thereof.The granulation processing device comprises a base, first supporting plates are fixedly connected to the four corners of the top of the base, second supporting plates are fixedly connected to the inner sides of the first supporting plates, and a light barrel is fixedly connected to the inner wall of each second supporting plate; an outer gear ring is fixedly connected to the surface of the light barrel, and a cooling component is arranged on the front side of the second supporting plate. According to the invention, the efficient and uniform granulation process is realized through the innovative mechanical linkage design, the device adopts a rotary cooling and self-cleaning integrated structure, the light barrel body is driven by the motor to rotate, and meanwhile, the condensation ring reciprocates up and down along the barrel wall to form a dynamic cooling effect, so that the uniform and stable temperature of materials is ensured, and the material discharge stage is stable. Falling materials drive the impeller to rotate, the composite material cleaning ring is driven by the gear and rack mechanism to scrape the barrel wall up and down, and residual materials are effectively removed.

The invention relates to the technical field of concrete admixtures in building materials, in particular to a viscosity reduction type polycarboxylic acid water reducer suitable for high-strength concrete and a preparation method of the viscosity reduction type polycarboxylic acid water reducer. The hydrophobic modified unsaturated double-chain polyether macromonomer is prepared from the following components in parts by mass: 20 to 30 parts of unsaturated acid, 200 to 300 parts of hydrophobic modified unsaturated double-chain polyether macromonomer, 10 to 15 parts of phosphate monomer, 2 to 4 parts of oxidizing agent, 1 to 2 parts of reducing agent, 1 to 2 parts of chain transfer agent, 5 to 10 parts of neutralizing agent and 120 to 180 parts of water. According to the invention, the polyether chain can unfold in a pore solution, the steric hindrance effect is further enhanced, cement particles are ensured to be effectively dispersed in a compact space, and meanwhile, the hydrophobic part of the side chain can effectively reduce the surface tension of the pore solution, so that the condition of overhigh viscosity is avoided, and the flowability and constructability of the concrete are improved.

The invention relates to the field of building materials, in particular to a straw soil building block for a dense rib sandwich panel and a preparation method of the straw soil building block. The straw soil building block is prepared from the following raw materials: 30 to 40 parts of clay, 15 to 25 parts of cement, 10 to 15 parts of desulfurized gypsum powder, 5 to 10 parts of epoxy resin emulsion, 2 to 4 parts of hyperbranched polyurethane acrylate emulsion, 0.5 to 1 part of hydrogen-containing polysiloxane modified allyl epoxy resin, 1 to 3 parts of organic amine, 10 to 15 parts of straw fiber, 0.1 to 1 part of polycarboxylate superplasticizer and 20 to 40 parts of water. The straw soil building block prepared by the invention has excellent mechanical properties and heat insulation and heat preservation properties, is low in water absorption rate, and is an ideal core material of a multi-ribbed sandwich panel.

The invention belongs to the field of application and utilization of concrete admixtures, and discloses an early-strength water reducing agent and a preparation method thereof, and the early-strength water reducing agent is prepared from the following raw materials in percentage by mass: 5-10% of early-strength polycarboxylic acid water reducing agent mother liquor, 5-10% of inorganic early-strength agent, 2-5% of organic early-strength agent, 0.5-1% of suspension stabilizer and 74-87.5% of water. The prepared early-strength water reducing agent is in an emulsion state, does not contain chloride ions, is not easy to layer, is convenient to use, has an obvious concrete early strength effect, does not shrink in later strength, has the advantages of simple preparation process, low cost and small mixing amount, is generally 1-2% of the mass of a concrete cementing material, can improve the workability of premixed concrete, and can improve the concrete early strength. The early strength of the concrete is improved, and the long-term strength of the concrete is not influenced.

The present application relates to the field of concrete technology, and specifically discloses a high-durability recycled concrete and a preparation method thereof. The high-durability recycled concrete is obtained by curing a concrete mixture into a mold, and the concrete mixture includes the following components by weight: 260-280 parts of silicate cement, 30-50 parts of fly ash, 1100-1200 parts of recycled coarse aggregate, 850-870 parts of modified recycled fine aggregate, 162-166 parts of water, and 2.9-3.3 parts of polycarboxylate water reducer, wherein the modified recycled fine aggregate is obtained by copolymerizing recycled fine aggregate grafted with vinyl on the surface with polyvinyl maleate. In the recycled concrete of the present application, the penetration of chloride ions is blocked, and the drying shrinkage of the recycled concrete is reduced, so the durability of the recycled concrete is improved.

The invention belongs to the technical field of compressed air energy storage, and particularly relates to an anti-dispersion grouting material for grouting reinforcement of compressed air energy storage surrounding rock and a preparation method of the anti-dispersion grouting material. The grouting material is prepared from the following components in parts by weight: 200 to 300 parts of sulphoaluminate superfine cement, 120 to 180 parts of water, 4 to 9 parts of nano silicon dioxide, 3 to 4.5 parts of water glass, 0.4 to 0.6 part of super absorbent resin and 4 to 9 parts of polycarboxylic acid type water reducing agent. The super absorbent resin is polyacrylamide. The preparation method comprises the following steps: doping the water glass into the sulphoaluminate superfine cement, stirring and mixing the sulphoaluminate superfine cement, the nano silicon dioxide, the super absorbent resin and the polycarboxylic acid water reducer, adding the water, and stirring to a uniform state. The prepared grouting material has the characteristics of high strength, good dispersion resistance, early strength, rapid solidification, permeability resistance, freezing resistance, micro-expansion, chemical compatibility, low alkalinity, good environmental adaptability and the like. And the structural safety and long-term sealing effect of the gas storage in a circulating high-pressure load environment can be ensured.

The invention discloses a multifunctional seawater and sea sand ECC material based on ion reconstruction and internal and external source cooperative regulation and a preparation method, and relates to the technical field of building materials. The base body is prepared from the following components in parts by mass: 0.6 to 0.8 part of cement, 0.2 to 0.4 part of silica fume, 0 to 0.2 part of quartz powder, 0.03 to 0.09 part of expanding agent, 0.15 to 0.23 part of seawater, 0.31 to 0.46 part of sea sand, 0.02 to 0.03 part of polycarboxylic acid water reducing agent and 0.001 to 0.002 part of silane coupling agent, and the content of the polyethylene fiber is 2 to 2.5 percent of the volume of the base body. The shrinkage performance is regulated and controlled through internal and external source expansion factors, the internal source expansion factors refer to the fact that Cl <-> and SO4 < 2-> in seawater and sea sand participate in a hydration reaction, AFt and Friedel's salts with expansibility are generated, ion curing can also be achieved, the external source expansion factors refer to expansive substances generated by an externally-doped expansion agent participating in the hydration reaction, the strength is high, the ductility is high, and shrinkage is small.

The invention discloses proportioning and feeding equipment for preparing a polycarboxylate superplasticizer and a feeding method of the proportioning and feeding equipment, and relates to the technical field of polycarboxylate superplasticizer preparation, the proportioning and feeding equipment comprises a feeding tank body and a bearing bracket fixedly mounted below the outer part of the feeding tank body; a proportioning mechanism is arranged at the upper part in the feeding tank body, and the proportioning mechanism comprises a proportioning chassis; wherein the proportioning partition plates are distributed in an equal-angle manner; a feeding mechanism is arranged at the bottom of the proportioning chassis, the feeding mechanism comprises a feeding shaft barrel, and a telescopic sliding rod is arranged on the outer side of the bottom end of the feeding shaft barrel. According to the proportioning and feeding equipment for preparing the polycarboxylate superplasticizer and the feeding method of the proportioning and feeding equipment, various raw materials are stored through the areas separated by the proportioning partition plates in the feeding tank body, so that proportioning and feeding are performed under various requirements, and meanwhile, the mixing branches below the feeding tank body and the inclined scraping plates assist proportioning and mixing of the various raw materials; the preparation efficiency of the polycarboxylate superplasticizer is improved.

The invention relates to a mud-resistant slump-retaining polycarboxylic acid water reducer and a preparation method thereof. The polycarboxylic acid water reducer is prepared from the following raw materials: 80-100 parts of polyether macromonomer; 1-2 parts of a rigid unsaturated monomer; 1-2 parts of a crosslinking monomer; 2-3 parts of an unsaturated sulfonic acid monomer; 10 to 15 parts of unsaturated acid; 0.5-2 parts of an oxidizing agent; 0.5-2 parts of a reducing agent; and 1-2 parts of a chain transfer agent. According to the invention, ethylene glycol monovinyl ether polyoxyethylene ether is adopted as a polyether monomer, a cross-linking monomer itaconic acid polyethylene glycol ester is introduced to form a cross-linked network-shaped molecular structure, and rigid structures such as (4-vinyl phenyl) trimethoxysilane are introduced, so that friction layer adsorption of clay is avoided, adsorption sites on the surface of the clay are reduced, and the adhesion of the clay is improved; the competitive adsorption effect of clay on the polycarboxylate superplasticizer is weakened, and the mud resistance and the slump loss resistance are greatly improved.

The invention discloses premixed flow-state solidified soil and a preparation method thereof, and the premixed flow-state solidified soil comprises the following components in parts by weight: 100 parts of silty clay; 8 to 15 parts of a curing agent; 48 to 90 parts of water; wherein the curing agent comprises the following components: 10 to 15 parts of sulphoaluminate cement; 40 parts to 55 parts of superfine steel slag powder; 30 to 40 parts of fly ash; 0.5 to 1.5 parts of sodium silicate; 0.1 to 0.3 part of a foaming agent; 0.1 part to 0.2 part of sodium thiocyanate; 0.1 part to 0.2 part of hydroxymethyl cellulose; 0.05 part to 0.2 part of triisopropanolamine; 0.1 part to 0.5 part of calcium nitrate; and 0.5 to 1 part of a polycarboxylic acid water reducing agent. The preparation method of the premixed flow-state solidified soil is suitable for using silty clay as a raw material, and greatly improves the strength, compactness, fluidity and other properties of the premixed flow-state solidified soil.

The invention discloses a method for purifying sialic acid from fermentation liquor, and belongs to the field of biochemical engineering separation and purification. The method comprises the following steps: firstly, concentrating sialic acid biological fermentation liquor by adopting membrane separation, adjusting the pH value of the concentrated liquor to 7-11, loading a sample on a boric acid affinity chromatography column, respectively washing with water and acid water, and collecting a sialic acid eluate; adjusting the pH value of the saliva acid eluate to 5-10, loading the saliva acid eluate to anion exchange resin, washing with water and acid water to obtain a resin desorption solution, and adding the resin desorption solution into a spray dryer for drying to obtain a sialic acid finished product. The stable five-membered ring complex is generated by utilizing the action of a boric acid group and a dihydroxyl structure in sialic acid. According to the method, the sialic acid is subjected to complexing under an acidic condition, molecules are eluted from a medium, selective separation of the sialic acid is realized, the sialic acid is further refined and purified by adopting anion exchange resin, high-purity sialic acid is prepared, introduction of a crystallization process is avoided, and use of an organic solvent and an acid reagent is greatly reduced.

The invention discloses an acidic water deoiling treatment process and device in the field of petrochemical engineering. The device comprises an acidic water pressure pump, an acidic water preheater, an acidic water dealkylation tower, a condenser and a liquid separation tank, the device is characterized in that the acidic water pressure pump, the acidic water preheater and the acidic water dealkylation tower are sequentially connected through acidic water pipelines, and the acidic water dealkylation tower is sequentially connected with the condenser and the liquid separation tank through the tower top. The method can improve the purity of the by-product acidic gas in the purification section of the downstream acidic water stripping device and reduce the hydrocarbon content in the acidic gas; meanwhile, most oil-gas resources are recovered.

Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with an alkyl halosilane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the alkyl halosilane is about 10:1 to about 1:10. The alkenyl halosilane and the alkyl halosilane are mixed at about 20° C. to about 45° C. The reaction product is separated and washed with saturated alkali carbonate solution.