41results about How to "High slurry concentration" patented technology

The present invention relates to the liquid coalite slurry dry processing technology, in particular to a desulphurization type dry liquid coalite slurry production process. The process includes the steps that: firstly, rough coal is broken up to below 30 mm through a jaw crusher or a roll crusher, the water content is controlled below 7 percent, and the coal is chosen by a dry coal cleaning way through an air dense medium fluidized bed; secondly, the full or the part of addition agent, desulfurization agent, desulfurization additive is added into the deashing float coal after the dry coal cleaning, and combined through two to eight swing type powder machines or bowl type powder machines, and powder is prepared through a parallel or series combination grade, the qualified powdered coal is collected through the air separation with a pipeline, the partial or full addition agent mixture is added again, namely, the dustless desulfurization type water soluble quick dissolving powdered coal.The appearance of the product can be non-dust emission powdery, or granulated, or massive. The present invention provides a high grade liquid coalite slurry dry formed slurry process which has high quality, desulfurization, and low cost, the liquid coalite slurry is convenient to be transported, when being used, the water content or the other industrial organic waste water is only required to be added into according to the proportion, the slurry is formed through agitating.

The invention discloses water coal slurry prepared from hazardous waste coal tar, and a preparation method and a use method thereof, and relates to the technical field of coal tar reutilization. The water coal slurry is prepared from the following ingredients in parts by weight: 13 to 20 parts of coal powder, 5 to 12 parts of coal tar, 0.2 to 0.8 parts of dispergators, 0.2 to 0.4 part of additivesand 15 to 20 parts of water. The water coal slurry is prepared from the coal tar and coal powder, so that the coal tar can be reasonably treated and used; the self consumption of the coal powder perse is reduced. Through the matched use of a certain amount of coal tar and the coal powder and through the addition of dispergators and additives, the water coal slurry with high slurry concentrationand low viscosity can be prepared; meanwhile, a great amount of solid state carbon and organic ingredients in coal tar can be utilized; the calorific value of the water coal slurry can be well improved, so that the coal tar is changed from waste materials into valuable materials; the popularization and application prospects are wide.

The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of random copolymers of one or more isoolefin monomers and one or more conjugated diene monomers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C₅ or greater initiator having a tertiary halide.

The invention relates to a high-single-concentration and high-conversion-rate production method of butyl rubber, and belongs to the technical field of rubber production. The method comprises the following steps: a, feeding a catalyst and a solvent into a polymerization reaction kettle from a first passage; b, feeding an isoprene monomer, an isobutene monomer and a slurry stabilizer into the polymerization reaction kettle from asecond passage; c, polymerizing in the polymerization reaction kettle to generate a butyl rubber suspension; d, enabling the butyl rubber suspension to flow into a degassing kettle from the polymerization reaction kettle, and introducing steam and hot water into the butyl rubber suspension at the same time; e, carrying out degassing kettle treatment; f, carrying outsteam stripping kettle treatment; and g, carrying out vibration dehydration screen treatment, and carrying out subsequent treatment to obtain butyl rubber. A polymerization stabilizer and a matched process are adopted, so that chloromethane slurry containing butyl rubber particles is generated in the production process, and the content of the butyl rubber particles in the slurry reaches 40 wt% orabove; the content obviously exceeds 30wt% in the prior art; therefore, the method provided by the invention has the characteristics of high slurry concentration and stability.

The invention discloses coal slurry and a preparation method thereof. The coal slurry comprises the following components: 100-300 parts by weight of coal, 50-200 parts by weight of water, 0.01-3 parts by weight of dispersant and 0.01-3 parts by weight of nonpolar solvent, wherein the mass ratio of the nonpolar solvent to the coal is less than or equal to 1%. The preparation method comprises the following steps: evenly mixing the nonpolar solvent with the coal to obtain a material A; and then evenly mixing the material A with water and the dispersant to obtain the coal slurry. The coal slurry prepared by the preparation method disclosed by the invention is high in slurrying concentration, high in solid content and low in viscosity; the coal slurry can be burnt or gasified as a fuel; the coal slurry is advantageous for pumping, storage and transportation, and easy to atomize, burn and gasify.

The invention relates to a paste filling material containing ultrafine tail mud as well as a preparation method and application of the paste filling material. The filling material is prepared from the following raw materials: a cementing material, aggregate and water, wherein the cementing material comprises the following components in parts by weight: 40-80 parts of converter steel slag, 5-30 parts of desulfurized gypsum and 0-20 parts of desulfurized ash; the aggregate comprises superfine tail mud; the mass ratio of the cementing material to the aggregate is 1: 4-6; the slurry concentration is 55-70%. According to the filling material, a large amount of superfine tail mud is utilized, good compressive strength (larger than or equal to 10 MPa) capable of being industrially applied is achieved without adding a water reducing agent, it is guaranteed that the filling material has good practical value, and the problem that the roof contact rate of a stope is not high is solved. The method is beneficial to solving the problems of reduction, harmlessness and recycling of industrial solid waste, solving the problem of tailing stockpiling, and promoting cooperative utilization of solid waste and hazardous waste and environmental protection; meanwhile, cyclic utilization of water resources is achieved through pre-plant return water, and therefore waste of the water resources is reduced.

The invention relates to the technical field of coal water slurry, and discloses coal water slurry and a preparation method thereof and a preparation method of synthesis gas, and the method comprises the following steps: adjusting the pH value of MTP process wastewater to be greater than 8, and then mixing the MTP process wastewater with a chemical additive and water to obtain slurry; and mixing the slurry with coal and the waste MTP catalyst, and grinding the mixture to obtain the coal water slurry. According to the invention, the coal water slurry prepared by taking the MTP process wastewater, the chemical additive, the water, the coal and the waste MTP catalyst as raw materials has the characteristics of uniform particle size distribution, high slurry concentration, small apparent viscosity and good fluidity; when the coal water slurry is used for preparing the synthesis gas, the utilization rate of the coal water slurry and the yield of the synthesis gas can be effectively improved.

The invention relates to the field of coal water slurry, and discloses a coal water slurry, a preparation method thereof and a preparation method of synthesis gas, the method comprises the following steps of: (1) mixing coal, water, an additive and wax residue to obtain a slurry, then grinding and screening the slurry to obtain primary slurry, and dividing the primary slurry into a coal water slurry A, a coal water slurry B and a coal water slurry C; (2) performing primary grinding on the coal water slurry A to obtain a slurry A, and performing secondary grinding on the coal water slurry B to obtain a slurry B; and mixing the slurry A and the slurry B with the coal water slurry C obtained in the step (1) to obtain the final coal water slurry. The coal water slurry provided by the invention has the characteristics of uniform particle size distribution, high slurry concentration, small apparent viscosity, high stacking efficiency, good fluidity and good stability; when the coal water slurry is used for preparing the synthesis gas, the yield of the synthesis gas and hydrogen can be higher.

The invention provides a method for preparing coal water slurry from sludge and gasified fine ash, which comprises the following steps: depolymerizing the sludge through bound hydrolysis to obtain modified sludge, enriching the gasified fine ash through high carbon to obtain high-carbon fine ash, and finely grinding the modified sludge and the high-carbon fine ash to obtain fine slurry; the coal water slurry is obtained by sequentially performing kneading mixing, shaping grinding and first screening on pulverized coal obtained after raw coal is subjected to superfine crushing, water, a dispersing agent and fine slurry, or sequentially performing grinding and second screening on the raw coal, the water, the dispersing agent and the fine slurry. According to the method disclosed by the invention, the gasified fine ash and the sludge are blended with the coal to synergistically prepare slurry and gasify, so that the problems that the sludge and the gasified fine ash are high in water content and difficult to treat, and the sludge and the gasified fine ash are low in slurry preparation concentration and small in treatment capacity after being blended are mainly solved, and the gasified fine ash and the sludge are subjected to reduction, harmlessness, resource, quality and high-value utilization; the method has obvious practicability and advancement and is suitable for large-scale popularization and application.

The invention discloses biological oil-coal slurry. The biological oil-coal slurry is prepared by stirring or grinding and mixing pulverized coal and biological oil according to a certain proportion, wherein the pulverized coal accounts for 20-80 parts by weight, and the biological oil accounts for 20-80 parts by weight. The invention also discloses a method for preparing gas, which comprises the following steps of: (1) mixing pulverized coal with biological oil according to a certain proportion, wherein the pulverized coal accounts for 20-80 parts by weight, and the biological oil accounts for 20-80 parts by weight, adding additive, and stirring to obtain biological oil-coal slurry; (2) atomizing the prepared biological oil-coal slurry by a delivery pump through a delivery pipeline and an atomizing nozzle, charging into a gasification furnace, carrying out pyrolysis, gasification and combustion reaction on the atomized biological oil-coal slurry and the charged gasification agent in the gasification furnace; and (3) obtaining the reacted gas which is rough gas and discharging residues formed in reaction at the bottom of the gasification furnace in a liquid stata. The invention can realize the common gasification of the biological oil and coal.

The invention discloses a method for preparing high-alkali coal water slurry from coking wastewater. The method comprises the following steps: mixing and stirring high-alkali coal powder, coking wastewater and three additives to prepare the coal water slurry; the additives comprise a stabilizer, a formaldehyde aqueous solution, a dispersant, an emulsifier and the like. Compared with the prior art, the method has the advantages that low-cost treatment of coking wastewater and viscose wastewater can be realized while the coal water slurry is prepared from the high-alkali coal, the gasification efficiency of the obtained coal water slurry is remarkably improved, and meanwhile, the obtained coal water slurry has relatively ideal slurry concentration, stability and flowability; and the process requirements of the gasification furnace can be better met.