7results about How to "Fast absorption rate" patented technology

The invention discloses a mixed alkali liquor carbon dioxide trapping agent and a trapping method thereof. The trapping agent comprises the following components in percentage by mass: 22-38% of main absorbent sodium carbonate, 1-10% of auxiliary absorbent A organic amine, 2-7% of auxiliary absorbent B sodium phosphate and / or disodium hydrogen phosphate and the balance of water. When the carbon dioxide is captured, the gas containing the carbon dioxide is in full contact with the mixed alkali liquid carbon dioxide capturing agent, the capturing agent absorbs the carbon dioxide to generate sodium bicarbonate precipitate, and the separated sodium bicarbonate solid is heated and desorbed at the temperature of 100-180 DEG C to obtain sodium carbonate, the carbon dioxide and water; and finally, returning the analyzed sodium carbonate to the mixed alkali liquor for recycling, and dehydrating, drying and purifying the mixed gas of carbon dioxide and water to obtain carbon dioxide. The trapping agent has the advantages of low cost, high carbon dioxide absorption capacity, high absorption rate, low regeneration energy consumption, safety and no toxicity; the sodium carbonate saturated solution is activated by using organic amine, so that the carbon dioxide absorption efficiency is improved; the separated sodium bicarbonate is heated and decomposed to obtain carbon dioxide, so that the working energy consumption is greatly reduced.

The present invention discloses a method and device for purifying phosphorus-sulfur-containing malodorous gas. The reaction device is provided with two-stage absorption tanks. A 0.02-0.18 mol / L chlorine-containing solution is added to the first-stage absorption tank, and a constant direct current is passed to generate a strong oxidizing chlorine-containing active component in the absorption liquid. The malodorous gas containing phosphine and hydrogen sulfide is oxidized in the first-stage absorption tank and then sent to the second-stage absorption tank for alkaline solution absorption treatment. When the phosphine content in the outlet tail gas is detected to be higher than 0.3 mg / m 3 When the absorption liquid in the first stage absorption tank is discarded, 15-40% of the absorption liquid in the second stage absorption tank is taken to replenish the absorption liquid in the first stage absorption tank, and hydrochloric acid and chlorine-containing solution are added to the original state of the absorption tank. Similarly, the second stage absorption tank is replenished with an equal volume of the original absorption alkali solution. The technical method of the present invention is simple to operate and has low operating costs. It is suitable for the purification of phosphorus and sulfur tail gas such as landfill, sewage treatment, yellow phosphorus or acetylene production, and has a high efficiency purification effect on phosphine and hydrogen sulfide odor gases in different concentration ranges.

The application provides a compound, a preparation method thereof and a composition containing the compound. A structural formula of the compound is shown as formula I. The preparation method of the compound is as follows: mixing diisopropanolamine and ethylene glycol diglycidyl ether, adding the mixture into a reaction kettle, adding a solvent, and reacting at 80-120 DEG C for 4-8 h, and then distilling at 50-80 DEG C under reduced pressure, collecting the distillation product, and obtaining the compound; mixing the compound and N-methyldiethanolamine in a mass ratio of (1-2):(2-3), and uniformly mixing to obtain a 20-60 wt% aqueous solution, and obtaining the composition.

The invention belongs to the technical field of polymer chemical raw materials and resin synthesis, particularly relates to polyvinyl chloride (PVC) resin, more particularly relates to special polyvinyl chloride resin for gas-solid phase method chlorination, and further discloses a preparation method of the special polyvinyl chloride resin. According to the preparation method of the special polyvinyl chloride resin for gas-solid phase method chlorination, on the basis of a traditional polyvinyl chloride resin synthesis process, a polybasic polyvinyl alcohol composite dispersion system with high and low polymerization degrees and alcoholysis degrees is adopted, and an antistatic agent is added in a polymerization mode at the initial stage of polymerization; the antistatic agent can be adsorbed and grafted on the surfaces of resin particles and distributed in the particles, so that the special polyvinyl chloride resin with a special particle structure is prepared.

This invention discloses a highly regenerable absorbent for capturing carbon dioxide, its preparation method, and its application, relating to the field of gas separation and purification technology. The absorbent comprises a main absorbent component, a co-absorbent component, an active component, an antioxidant, an auxiliary agent, and water. The absorbent provided by this invention, by introducing the antioxidant 2,6-di-tert-butyl-4-methoxyphenol with a specific structure and the auxiliary agent 1-isopropyl-3-pyrrolidone, synergistically combines with the main absorbent component, the co-absorbent component, the active component, and the solvent water. It exhibits excellent absorption and desorption rates and low-temperature capture performance during CO2 capture, significantly reducing capture energy consumption and improving capture efficiency, thereby reducing operating costs. It is suitable for the capture and treatment of CO2-containing waste gas.

The utility model relates to the field of disposable sanitary products, in particular to a sheet with an absorption function, which solves the problem of slow infiltration of an absorber and comprises an outer wrapping layer, an upper absorption layer and a lower absorption layer, the upper absorption layer and the lower absorption layer are arranged in the outer wrapping layer, the upper absorption layer is composed of 2-10 strip-shaped water absorption sheets which are distributed at intervals, and the lower absorption layer is composed of 2-10 strip-shaped water absorption sheets which are distributed at intervals. An infiltration channel facilitating liquid infiltration is formed between every two adjacent water-absorbing sheets, the outer wrapping layer located at the infiltration channel is subjected to hot pressing or ultrasonic welding to form pressing point parts distributed in a dot matrix shape, the outer wrapping layer is fixed to the lower absorbing layer through the pressing point parts, and the centers of the pressing point parts are punctured to form infiltration holes.