11 results about "Potassium hydrocarbonate" patented technology

The invention discloses a production method of distiller's grain fermentation liquid fertilizer specially applied to roxburgh rose. The distiller's grain fermentation liquid fertilizer is prepared bythe step of evenly mixing 50 to 80 parts of distiller's grain fermentation extracting solution, 0.5 to 1 part of microelement, 5 to 10 parts of seaweed meal, 5 to 10 parts of natural active organism,2 to 5 parts of potassium bicarbonate, 2 to 5 parts of natural active organism and 2 to 5 parts of natural surface active agent. A preparation method of the distiller's grain fermentation extracting solution comprises the steps: evenly stirring 50 to 80 parts of distiller's grain, 50 to 150 parts of rice washing water, 1 to 2 parts of EM microflora fermentation liquid and 0.5 to 1 part of sugar, performing composting fermentation at the room temperature to obtain a distiller's grain fermentation material, stirring and extracting through a sodium carbonate water solution, filtering and performing evaporation and condensation on obtained filtrate until the density is 1.1 to 1.2 to obtain distiller's grain fermentation extracting solution. The distiller's grain fermentation liquid fertilizerdisclosed by the invention has a good use effect, meanwhile can effectively prevent pest and disease damage to the roxburgh rose and is high-efficiency environment-friendly liquid fertilizer.

The application discloses a kind of fatty acid salt coking inhibitors and its preparation method and application, belong to coking inhibitor technical field.The technical scheme is: fatty acid is reacted with potassium compound, namely the coking inhibitor is obtained;Wherein, fatty acid is the mixture of one or two of oleic acid and stearic acid, and potassium compound is potassium hydroxide, potassium carbonate or potassium bicarbonate.The coking inhibitor of the application can be directly added to the cracking raw material oil for the cracking furnace of diesel and tail oil and other heavy raw materials, without needing to separately add inhibitor nozzle and other injection equipment, reduce unnecessary risk of blockage, reduce the complexity of process;And compared with the existing sulfur and phosphorus-containing oil-soluble inhibitor, the coking inhibitor of the application has good mid-late gas phase coking removal performance.

This invention discloses a method and system for recovering high-purity potassium bicarbonate and potassium sulfate from dust collected during blast furnace ferromanganese smelting. It proposes for the first time a technical route for recovering potassium bicarbonate and potassium sulfate by washing blast furnace ferromanganese smelting dust. Addressing the characteristics of the ash washing wastewater, pre-oxidation coupled with reduction impurity removal achieves efficient removal of sulfite and high-valence iron and manganese ions without introducing new impurities, significantly improving the purity of the recovered potassium salts. Secondly, considering the difficulty and cumbersome operation of separating carbonate, sulfate, and chloride ions, and taking into account the carbon dioxide consumption required for potassium bicarbonate preparation, the invention employs acid hydrolysis of carbonates to recover carbon dioxide, recycling carbon, and controlling the liquid-phase anion composition to co-produce high-purity potassium bicarbonate and potassium sulfate, reducing the cost of bicarbonate recovery and the difficulty of salt separation. Simultaneously, it achieves zero emissions of wastewater and waste gas.

The present application relates to the technical field of fertilizer preparation, and provides a kind of instant fertilizer, including disintegrating agent and compound fertilizer, the disintegrating agent is the mixture of one or several of sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, citric acid, polyvinylpyrrolidone K30, sodium carboxymethyl starch, low-substituted hydroxypropyl cellulose, cross-linked polyvinylpyrrolidone, cross-linked sodium carboxymethyl cellulose, sodium carboxymethyl cellulose, and the disintegrating agent is obtained by treating straw as raw material. The instant fertilizer prepared by the method of the present application can provide various nutrients required by crops, has the advantages of rapid dissolution, easy absorption, good fertilizer effect, etc.

The application relates to the technical field of fiber modification, and particularly discloses a moisture-absorbing, heat-releasing and antistatic multifunctional acrylic fiber as well as a preparation method and application thereof. The acrylic fiber is obtained through pretreatment, alkaline hydrolysis, acid neutralization, grafting of double bonds and crosslinking reaction of ordinary acrylic fiber. In the alkaline hydrolysis, the alkali liquor is one of sodium hydroxide, potassium hydroxide, sodium bicarbonate, potassium bicarbonate, sodium carbonate and potassium carbonate, and the mass concentration of alkali metal in the alkali liquor is 6-20%; in the acid neutralization, the acid solution is one of acetic acid and carbonic acid, and the mass concentration is 20-30%; in the grafting of double bonds, the addition amount of the nucleophilic reagent is 25-80% of the mass of the acrylic fiber, and the nucleophilic reagent is one of allylamine, diallylamine and methylallylamine; and in the crosslinking reaction, the mass concentration of the hydrophilic monomer solution is 25-40%. The obtained acrylic fiber has higher moisture absorption, stronger material combination stability, more persistent moisture absorption and heat release effect, and is almost not affected by the washing times.

The present application relates to a kind of surface carbonation modified iron-doped nickel oxide preparation method and the method of decomposing ozone, the preparation method comprises the following steps: adding precipitant to the aqueous solution of nickel-containing iron precursor, hydrothermal reaction is carried out, precursor material nickel-iron layered double hydroxide is obtained, calcination, the aqueous solution of the obtained iron-doped nickel oxide and modifier is mixed uniformly, hydrothermal reaction is carried out;Wherein, the modifier is one or more of urea, ammonium carbonate, ammonium bicarbonate, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, lithium carbonate, lithium bicarbonate, sodium hydroxide, potassium hydroxide and lithium hydroxide.The preparation method of the present application is simple, does not need special condition, and the iron-doped nickel oxide catalyst modified by surface carbonation is rich in active site, and can show high and stable ozone decomposition efficiency in high humidity or extremely high humidity environment.

This application discloses nalmefene base, its preparation method, and its application, belonging to the field of pharmaceutical technology. The preparation method of nalmefene includes the following steps: mixing nalmefene hydrochloride with water to form an aqueous solution of nalmefene hydrochloride; reacting the aqueous solution of nalmefene hydrochloride with an aqueous solution of an alkaline component to form nalmefene base; the pH of the nalmefene hydrochloride is 4.0-6.5; the alkaline component includes at least one selected from sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium acetate, ammonia, and sodium dihydrogen phosphate. This application uses nalmefene hydrochloride with a pH of 4.0-6.0 to undergo a desalting reaction with an aqueous solution of a strong base-weak acid salt or a weak base, crystallizing out nalmefene base. This effectively controls the particle size and shape of nalmefene base, obtaining small-particle-size, low-content, stable, and poorly soluble tablet-shaped nalmefene base without pulverization. It is less prone to burst release, meeting the requirements for sustained-release formulations, and the reaction is mild, green, and economical.

This invention discloses a process and system for regenerating potassium hydroxide based on the lime slurry method, belonging to the field of alkaline hydrogen production technology. It includes the following steps: 1) pre-treating and purifying spent alkaline solution containing potassium carbonate and / or potassium bicarbonate; 2) subjecting the pre-treated spent alkaline solution to a staged reaction; 3) performing solid-liquid separation on the slurry after the secondary reaction to obtain a clear liquid containing potassium hydroxide and a calcium carbonate filter cake; 4) further purifying the clear liquid to obtain a potassium hydroxide solution. The solid-liquid separation process innovatively employs a two-stage reaction process with gradient temperature control, combined with ultrasonic treatment and solid-liquid separation, achieving a potassium hydroxide recovery rate of over 95%, a potassium hydroxide purity of ≥98% in the regenerated alkaline solution, and a calcium ion residue of ≤5ppm, allowing for direct reuse in an alkaline electrolyzer.

The invention discloses a low-temperature leaching and hazardous waste treatment method for vanadium and chromium in a vanadium-containing raw material, and belongs to the crossing field of non-ferrous metal hydrometallurgy and solid waste resource recovery. One or more of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, sodium percarbonate, potassium percarbonate, potassium carbonate or potassium bicarbonate is adopted as an extracting agent; multi-stage countercurrent extraction is carried out under a low-temperature condition, so that vanadium and chromium metals can be efficiently recovered, and dissolution of impurities such as calcium and magnesium is inhibited. After extraction, tailings are converted into general solid waste, and recycling and harmlessness of hazardous waste are achieved. The method provided by the invention has the advantages of high extraction rate, good selectivity, recyclable extractant, green and environment-friendly process and the like, and solves the technical problems of high vanadium extraction energy consumption, high cost, low purification efficiency, low purity and incapability of recycling hazardous wastes in the prior art.

The invention belongs to the technical field of polyester recovery, and relates to a PET / PTT blended fabric depolymerization recovery method, a basic catalyst and dimethyl carbonate are adopted, and the basic catalyst is composed of a strong basic catalyst and a weak basic catalyst in a mass ratio of 2: 8-8: 2; the strong alkaline catalyst is one or more of sodium hydroxide, potassium hydroxide, potassium carbonate, sodium carbonate, sodium methoxide, potassium methoxide, sodium ethoxide and potassium ethoxide, and the weak alkaline catalyst is one or more of potassium bicarbonate, sodium bicarbonate and sodium dihydrogen phosphate; the depolymerization recovery method disclosed by the invention is good in separation effect, the separation difficulty and the product loss are reduced, and the product purity is high.

The invention provides a preparation method of trimethylene carbonate, which comprises the following steps: carrying out transesterification by taking dimethyl carbonate and 1, 3-propylene glycol as raw materials and sylvite as a catalyst; wherein the catalyst is selected from one or more of potassium carbonate, potassium hydroxide, potassium bicarbonate, potassium chloride, potassium nitrate and potassium sulfate; the reaction conditions are normal pressure and the reaction temperature is 90-140 DEG C. According to the preparation method provided by the invention, the potassium salt is innovatively used as the catalyst, the one-pot method is adopted for preparation under milder reaction conditions, the excellent trimethylene carbonate yield can be obtained, the catalyst is low in cost and easy to obtain, the preparation process is simple and convenient, and industrial popularization is facilitated.