15results about How to "Improve dechlorination effect" patented technology

The invention discloses a microwave treatment and utilization method of cold-rolled acid regenerated impurity-removed sludge, which comprises the following steps: crushing the cold-rolled acid regenerated impurity-removed sludge, roasting the crushed cold-rolled acid regenerated impurity-removed sludge in a microwave kiln, and further sintering and utilizing the roasted iron-containing material; corrosive chlorine-containing gas generated by roasting is conveyed to the acid regeneration chlorine-containing gas treatment and utilization system to obtain hydrochloric acid, and tail gas generated by the acid regeneration chlorine-containing gas treatment and utilization system is discharged after reaching the standard. According to the invention, green electricity microwave roasting cold rolling acid regeneration impurity removal sludge is adopted, washing is not needed, the waste disposal amount is not increased, fuel gas is not used, extra waste is not added in the disposal process, pollutant discharge is reduced, and green electricity driving equipment does not occupy the carbon emission limit; microwave heating is uniform, the dechlorination effect is better under the same temperature roasting condition, the roasting temperature is lower under the same dechlorination effect condition, and energy consumption and carbon emission are reduced; the amount of flue gas generated by heating is small, the proportion of chlorine-containing gas is high, the concentration of hydrochloric acid obtained at a time is high, and energy consumption in the acid making process is reduced.

The invention discloses an agent for dechlorinating an aqueous solution under the condition of low-concentration chloride ions and an application method, and the agent is prepared from calcium oxide and sodium metaaluminate and is used for removing the chloride ions in the aqueous solution. The application method comprises the following steps: firstly, concentrating a to-be-treated aqueous solution containing different low-concentration chloride ions through an ultrafiltration and reverse osmosis system to obtain a concentrated solution, taking a concentrated water sample, sequentially adding calcium oxide and sodium metaaluminate into the water sample in two times according to a certain proportion on the premise of keeping the total amount of calcium oxide and sodium metaaluminate unchanged, then putting the solution into a constant-temperature water bath stirring pot, fully and uniformly stirring to enable the medicament to fully react with chloride ions in the water sample, filtering after the reaction is completed, and measuring the concentration of the treated chloride ions, so that the concentration of the chloride ions after the medicament is treated is reduced to 30 mg / L or below. The method is simple and convenient to operate, does not cause secondary pollution, is suitable for wider engineering scenes under the condition of low initial concentration, and has the advantage of remarkable dechlorination effect.

The invention discloses a high-temperature dechlorinating agent for regenerated flue gas and a preparation method of the high-temperature dechlorinating agent. The high-temperature dechlorinating agent comprises the following components in percentage by mass: 70-85% of active components, 5-10% of auxiliaries and 10-20% of auxiliary materials, the preparation method comprises the following steps: 1, uniformly mixing raw materials A and B, and adding water; 2, reacting to obtain a first intermediate; 3, adding the raw material A and water into the first intermediate to react to obtain first and second powder C; 4, mixing the first powder C to obtain mixed powder E; 5, mixing the second powder C to obtain mixed powder G; 6, rolling the mixed powder E; 7, adding the mixed powder G and rolling balls; 8, drying and roasting; the invention further discloses application of the dechlorinating agent to catalytic reforming regeneration flue gas dechlorination. The effective active component carbonate is obtained through reaction and roasting decomposition between calcium and sodium raw materials, and the active component mixed carrier is obtained through causticization reaction, so that the high-temperature dechlorination precision and chlorine holding capacity are improved, and the strength, water vapor resistance and high-temperature resistance of the dechlorinating agent are enhanced.

The utility model discloses an anti-clogging dechlorinator system which comprises a dechlorinating tank feeding main pipeline, a dechlorinating tank side feeding main pipeline and a discharging pipeline, the dechlorinating tank feeding main pipeline is communicated to the feeding end of a dechlorinating tank, the feeding end of the dechlorinating tank is provided with a dechlorinating tank feeding main pipeline through valve, the dechlorinating tank feeding main pipeline is communicated to the dechlorinating tank side feeding main pipeline, and the discharging pipeline is communicated to the dechlorinating tank side feeding main pipeline. The upper part, the middle part and the tail part of the dechlorination tank side feeding main pipeline are sequentially communicated with a dechlorination tank upper side feeding pipeline, a dechlorination tank middle side feeding pipeline and a dechlorination tank lower side feeding pipeline, and the dechlorination tank upper side feeding pipeline, the dechlorination tank middle side feeding pipeline and the dechlorination tank lower side feeding pipeline are respectively communicated to the upper part, the middle part and the lower part in the dechlorination tank; the dechlorinating tank upper side feeding pipeline, the dechlorinating tank middle side feeding pipeline and the dechlorinating tank lower side feeding pipeline are all provided with valves, the discharging end of the dechlorinating tank is communicated to the discharging pipeline, and the discharging end of the bottom of the dechlorinating tank is provided with a discharging pipeline penetrating valve. The utility model provides a dechlorinator system which is anti-blocking, low in risk and low in dechlorination cost.

The utility model discloses a dry dechlorination system for blast furnace gas. The system comprises a powder supply and transportation device, a dechlorination device and a waste recovery device, wherein the powder supply and transportation device is connected with one end of a first pipeline; the dechlorination device comprises a vertical reaction cavity, a powder inlet is formed in the upper end of the vertical reaction cavity and connected with the other end of the first pipeline, a coal gas inlet is formed in the upper end of the vertical reaction cavity, and a vertical spiral ladder is arranged in the vertical reaction cavity and connected with the other end of the first pipeline. Coal gas carrying atomized powder enters the spiral spiral ladder from a spiral spiral ladder inlet in the upper end of the spiral spiral ladder and is moved out from a spiral spiral ladder outlet in the lower end of the spiral spiral ladder; the waste recovery device comprises a guide plate and a waste outlet, the upper end of the guide plate is connected with the lower end of the spiral ladder, the two ends of the guide plate are connected with the side wall of the vertical reaction cavity, an outlet of the spiral ladder is formed in one side of the guide plate, a gas outlet is formed in the side wall of the vertical reaction cavity on the other side of the guide plate, and the waste outlet is formed in the lower end of the vertical reaction cavity.

The invention provides a method for removing organochlorine in an oil product, belongs to the technical field of petroleum processing, and particularly relates to a method for removing organochlorine in an oil product. The method comprises the following steps: mixing a phase transfer catalyst, a nucleophilic reagent, a demulsifier, deionized water and an oil product, carrying out a reflux stirring reaction at 80-120 DEG C for 0.5-2 h, cooling, standing, and carrying out oil-water separation to obtain a dechlorinated oil product. The phase transfer catalyst is added into the reaction system, so that the oil phase and the water phase are in full contact, the reaction rate is increased, and a better dechlorination effect is achieved. The method is convenient to operate and simple in process, the chlorine content in the oil product can be obviously reduced, meanwhile, the components of the oil product cannot be changed, and the problems of equipment corrosion, catalyst poisoning, ammonium salt blockage and the like of an oil refinery are effectively solved.

The present disclosure relates to a sulfuric acid dechlorination system for chlor-alkali production, comprising a heating module, a dechlorination dilute sulfuric acid storage tank and an air blowing pipeline connected in communication, an air inlet end of the air blowing pipeline being connected with a compressed air source, an air outlet end of the air blowing pipeline being connected with a gas distributor arranged in the dechlorination dilute sulfuric acid storage tank; the heating module is used for heating at least part of the air blowing pipeline to make the compressed air in the air blowing pipeline reach a preset temperature. Through the above technical scheme, the sulfuric acid dechlorination system for chlor-alkali production can improve aeration uniformity and dechlorination efficiency.

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.

The invention discloses a method for reducing the content of sulfur and chlorine in waste rubber and plastic pyrolytic oil by using waste chromium slag, and relates to the technical field of comprehensive utilization of solid waste products. A system adopted by the method comprises a dechlorination device, a chlorine adsorption device, a graded catalytic pyrolysis device and a waste residue separation device, waste chromium residue powder is conveyed into a chlorine adsorption pipeline of the chlorine adsorption device before an experiment is started, and when the experiment is started, the waste chromium residue powder is separated from the chlorine adsorption pipeline; waste chromium slag and waste rubber and plastic sequentially pass through a dechlorination device, a graded catalytic pyrolysis device and a waste residue separation device to reduce sulfur and chlorine in waste rubber and plastic pyrolysis oil. And cyclic utilization of the waste chromium slag is realized in the in-situ catalytic pyrolysis process and the ectopic catalytic pyrolysis process. The method provided by the invention not only helps to solve the problem of environmental pollution, but also reutilizes the waste chromium slag.

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 invention relates to the technical field of smelting equipment, and particularly provides a blast furnace gas fine desulfurization pretreatment system which comprises a secondary dechlorination device and a hydrolysis catalysis device, the secondary dechlorination device comprises a secondary dechlorination pretreatment agent, and the hydrolysis catalysis device comprises a hydrolysis catalyst. An outlet of the secondary dechlorination device is communicated with an inlet of the hydrolysis catalysis device; the secondary dechlorination pretreatment agent comprises the following components in percentage by mass: 85%-90% of a first carrier, 1%-10% of a first active component and 5%-10% of a pore forming agent; the hydrolysis catalyst comprises the following components in percentage by mass: 80%-90% of a second carrier, 1%-5% of a second active component and 5%-15% of a pore forming agent. The problems that a COS hydrolysis catalyst is short in service life and low in hydrolysis conversion rate can be solved.

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 the field of industrial dechlorination, and particularly discloses a preparation method and application of modified calcium hydroxide. According to the preparation method, mixed water, ethyl alcohol and triethanolamine are used as a digestion solution, the digestion solution is mixed with calcium oxide particles for a digestion reaction, modified calcium hydroxide is obtained, the added ethyl alcohol and triethanolamine can effectively improve the dispersion degree of the calcium oxide particles, the severe degree of the digestion reaction is relieved, and the calcium oxide particles can be effectively dispersed. The specific surface area of the obtained calcium hydroxide is increased; the surface property is improved. The modified calcium hydroxide prepared by the method has a relatively high specific surface area and a rich pore structure, is beneficial to contact with hydrogen chloride in flue gas, and improves the dechlorination performance. When the modified calcium hydroxide is used for treating flue gas, most hydrogen chloride can be removed within a short contact time, good dechlorination efficiency is shown, and actual use is facilitated.

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.