30results about How to "Solve development and utilization problems" patented technology

The invention provides a method of extracting methyl o-phenylenediamine from TDI organic bottom and synthesizing TTA by it, solving development and utilization problem of TDI organic bottom. Using TDI organic bottom as raw material, in a certain temperature and pressure, using the method of dissolution and vacuum extract distillation to extract methyl o-phenylenediamine from TDI organic bottom, medium pressure one-step synthesizing methylbenzene-trinitrogen azoles sodium salt by extracted methyl o-phenylenediamine and excess erinitrit solution, and then by acidification, poaching, vacuum hydroextraction, distillation and purification to produce methylbenzene-trinitrogen azoles TTA product. The material temperature of TDI organic bottom in purification process is 160-190deg C,the evacuation in still is 50-380Pa,the synthesized process of TTA is in temperature 250+-20deg C, pressure 4.6-5.2Mpa, synthesis reacting for 3.5-4h in constant temperature and constant pressure. It is adapted for comprehensive development and utilization of organic bottom, environmental conservation and resoure utilization.

The invention relates to a method for preparing high-purity potassium fluoride and co-producing white carbon black by adopting potassium fluosilicate by adopting potassium fluosilicate. The method provided by the invention comprises the following steps of: firstly carrying out an ammonolysis reaction on ammonia water and potassium fluosilicate to obtain mixed slurry of ammonium fluoride, potassium fluoride and silicon dioxide solid; filtering the mixed slurry, washing a filter cake, and then drying to obtain the white carbon black; adding potassium hydroxide into filtrate to carry out an alkaline hydrolysis reaction, so as to obtain a potassium fluoride solution, and absorbing ammonia gas discharged by a reaction and recycling the absorbed ammonia gas; and standing and settling the potassium fluoride solution, taking supernatant liquor and carrying out induced crystallization on the supernatant liquor, and filtering, washing and drying to obtain the potassium fluoride finished product. The method provided by the invention is low in cost, can effectively solve the problems of development and utilization of crude potassium fluosilicate and environmental protection and has good economic benefit and social benefit; the prepared potassium fluoride is high in purity, and the ammonia water is recycled in the whole reaction process, utilization rate of raw materials is high; and the method provided by the invention is simple in processing steps, no product harmful to the environment is produced, and production environment is friendly.

A process for preparing ammonium hydrogen fluoride and white carbon black simultaneously includes such steps as fast reaction between fluorosilicic acid (or ammonium fluorosilicate) and ammonia water to obtain the crystal seeds of white carbon black, adding water, fluorosilicic acid (or ammonium fluorosilicate) and ammonia water, reacting while controlling pH=8-9 to obtain the slurry of white carbon black deposit and ammonium fluoride solution, filtering, washing to obtain white carbon black paste and ammonium fluoride solution, and respectively preparing white carbon black and ammonium hydrogen fluoride from them.

The invention discloses a method for producing succinic acid by Canna edulis ker fermentation, belonging to the technical field of microbial fermentation. The invention utilizes Actinobacillus succinogenes CGMCC1593 screened from a beef rumen to ferment Canna edulis ker hydrolysed syrup or Canna edulis ker liquefied mash or a mixture of the Canna edulis ker hydrolysed syrup and one or more than one sugar raw material. The concentration of the product succinic acid reaches 40-66 g / L, the sugar yield is 70-90% (the sugar use ratio is 80-95%), and the production strength reaches 0.9-1.2 g / (L.hour), so that the invention is very suitable for the industrial production of low-cost succinic acid.

The invention discloses a preparation method of surface modified pine needle loaded lanthanum hydroxide phosphorus adsorbent. Surface modified pine needles serve as the carrying material, and surfaces of the pine needles are loaded with lanthanum hydroxide through the chemical deposit effect. According to the main preparation process, smashed pine needle cuticle is broken and organic substances in pine needle tissue structures are extracted through an alkali-alcohol mixed solution, and therefore the surfaces of pine needle tissue are loaded with lanthanum hydroxide through deposition. The phosphorus adsorbent is stable in phosphorus removal effect, convenient to recover and little in organic substance dissolution in the adsorption process; meanwhile, forestry by-products are utilized as resources, and quite good application prospects and environment benefits are achieved.

The invention discloses a method for storing waste concrete and sealing carbon dioxide in a newly-abandoned coal mine. All roadways of the newly-abandoned coal mine are separated, and the size of eachspace after separation is determined; from the end farthest away from a portal of the newly-abandoned coal mine, separation walls are constructed in sequence according to the determined size of eachspace after separation; a material transportation system of the newly-abandoned coal mine is adopted to transport the waste concrete into the space after separation for accumulation, and in the accumulation process, a water supply system is adopted to spray saturated lime water; sealing walls are constructed to seal the space where the waste concrete is accumulated, and high-pressure pipelines arearranged on the sealing walls; after the sealing walls meet the sealing requirements, by means of compressed air pipelines, connected with the high-pressure pipelines, of the newly-abandoned coal mine, the carbon dioxide gas is injected into the space; when injection of the carbon dioxide gas with a certain volume is completed, injection is stopped, and the high-pressure pipelines are sealed. Bymeans of the method, the purposes of waste concrete placement, newly-abandoned coal mine filling and carbon dioxide sealing can be achieved, and soil pollution and the atmospheric greenhouse effect can be reduced.

The invention provides a manufacturing method of electrician level magnesia powder additive, which includes steps of S1, fusing serpentine and separating it after cooling to obtain magnesium silicate coarse material and ferrosilicon; S2, grinding and grading the magnesium silicate coarse material; S3, performing alkali-washing on the magnesium silicate; S4, water-washing and drying magnesium-enriched silicate; S5, smashing, sieving and magnetic-selecting the magnesium-enriched silicate; S6, mixing the magnesium-enriched silicate with kaoline, and preparing the electrician level magnesia powder additive. By using serpentine and kaoline as raw materials, the electrician level magnesia powder additive is prepared; the additive is wide in raw material source and low in cost; moreover, after adding the electrician level magnesia powder additive to the electrician level magnesium oxide, electrical properties of electrician level magnesium oxide are improved; meanwhile, requirements on MgO content in electrically fused magnesite is reduced, thereby enlarging the applicable scale of the electrically fused magnesite raw material and improving the utilization rate of the low-grade the electrically fused magnesite; the manufacturing method is good for solving the development and utilization of low-grade magnesia.

The invention relates to a processing method of mactra veneriformis soup, which comprises the steps of: purifying fresh mactra veneriformis, entering a cooking and separating device for separating out mactra veneriformis juice after the mactra veneriformis spits sand; settling the separated mactra veneriformis in a settling pond, removing impurities; and concentrating the settled mactra veneriformis, adding ingredients according to different processing requirements, and canning after being sterilized at high temperature. The invention has simple process and reasonable design, effectively solves the problem of development and utilization of the mactra veneriformis juice, avoids environment pollution caused by the waste of the mactra veneriformis juice, provides various delicious condimentsfor people, and has better economic and social benefits.