5results about How to "Improve dechlorination effect" patented technology

The utility model discloses a system of removing chlorine ion in lean organic phase in the system of crude phosphoric acid organic extraction production potassium dihydrogen phosphate, which comprises: a back extraction tank for reacting hydrochloric acid organic phase with ammonia water to generate ammonium chloride and separating phases; an aging tank connected to the outlet of the back extraction tank for static separation and phase separation to precipitate a chlorine-containing water phase; a multi-stage countercurrent water washing tank comprising at least three series-connected water washing tanks for washing the organic phase step by step; and an adsorption tower connected to the outlet of the last-stage water washing tank and provided with an adsorbent for further removing chlorine ions in the organic phase. The utility model fully utilizes washing water, reduces water consumption, realizes a chlorine ion removal rate of 94% to 96% in the lean organic phase, improves the purity of potassium dihydrogen phosphate products, prolongs the service life of the extraction agent, and systematically solves the industry problem that it is difficult to remove alkyl halides in the lean organic phase.

This invention discloses the preparation and application of a porous bismuth ferrite material. The preparation method includes the following steps: dissolving bismuth and iron salts in an acid solution to obtain a metal solution; adding a complexing agent and a pore-forming agent to the metal solution and mixing to obtain a precursor solution; heating the precursor solution to obtain a wet gel; drying the wet gel to obtain a dry gel; and calcining the dry gel under an inert atmosphere containing 6-10% oxygen to obtain the porous bismuth ferrite material. The porous bismuth ferrite electrode material of this invention not only solves the structural defects of traditional porous bismuth ferrite materials, such as small pore volume and insufficient utilization of active sites, but also fully utilizes its membrane capacitance characteristics and bimetallic synergistic effect, showing excellent application prospects in the field of capacitive deionization and chlorine removal.

The application discloses a preparation method and application of a semiconductor mineral composite functional biomaterial for promoting reductive dechlorination, and belongs to the technical field of environmental biological remediation. The application solves the problems of slow metabolic rate and unstable degradation capacity of dechlorination respiratory bacteria in the existing biological remediation process. The semiconductor mineral is compounded with dechlorination respiratory bacteria such as pseudomonas aeruginosa, the conductive property of the semiconductor mineral is utilized, the electron transfer process in the microbial community and the growth and metabolism process of the dechlorination respiratory bacteria are promoted, and finally the microbial dechlorination of CPs is enhanced.

The invention relates to a dechlorinating agent for plastic oil dechlorination, a preparation method of the dechlorinating agent and a plastic oil dechlorination method, and the dechlorinating agent contains 5-50 wt% of calcium oxide, 4-60 wt% of magnesium oxide, 5-90 wt% of aluminum oxide and 0.5-15 wt% of a phosphorus-aluminum auxiliary agent on the basis of the dry base weight of the dechlorinating agent; the phosphorus-aluminum auxiliary agent does not contain chlorine element, and the weight ratio of phosphorus element to aluminum element is (1-5): 1. The dechlorinating agent disclosed by the invention has a relatively excellent dechlorinating effect.

This invention discloses a microwave-based method for the treatment and utilization of cold-rolled acid regeneration sludge. The sludge is crushed and then roasted in a microwave kiln. The roasted iron-containing material is further sintered for utilization. The corrosive chlorine-containing gas generated during roasting is transported to an acid regeneration chlorine-containing gas treatment and utilization system to obtain hydrochloric acid. The exhaust gas generated by the acid regeneration chlorine-containing gas treatment and utilization system meets emission standards. This invention uses green electricity for microwave roasting of cold-rolled acid regeneration sludge, eliminating the need for water washing, reducing waste disposal volume, eliminating the use of fuel gas, and preventing additional waste during the treatment process, thus reducing pollutant emissions. The green electricity-driven equipment does not occupy carbon emission limits. Microwave heating is uniform, resulting in better dechlorination under the same roasting temperature conditions. Under the same dechlorination effect conditions, the roasting temperature is lower, reducing energy consumption and carbon emissions. The amount of flue gas generated during heating is small, the proportion of chlorine-containing gas is high, and the concentration of hydrochloric acid obtained in one step is high, reducing energy consumption in the acid production process.