72results about How to "Long process flow" patented technology

The invention discloses a high-salt cyanide-containing wastewater treatment process and system, which are mainly used for performing the treatment of neutralization , cyanogen removal, ammonia nitrogen removal, COD (Chemical Oxygen Demand) removal and the like on metal zirconium production wastewater. The process involves the combined processes of coagulative precipitation, ammonia stripping, electrochemical / chemical oxidization, biochemical reaction and the like. The device comprises treatment facilities such as a coagulative precipitation device, an ammonia stripping device, an electrolysis cyanide breaking device, a chemical cyanide removing device, an electro-catalysis oxidizing device, a chemical oxidizing device, a water distribution hydrolytic tank, an A / O (Anoxic / Oxic) biochemical tank, and a secondary precipitation tank. By adopting the high-salt cyanide-containing wastewater treatment process and system, the problem related to treatment of high-salt, high-cyanide, high-COD and high-ammonia and nitrogen wastewater is solved. The wastewater treatment process has a long flow, but the features of different processes are brought into full play; particular pollutants are removed specifically, and the running cost is relatively low; moreover, pollutants such as cyanogen, COD and ammonia nitrogen are removed fundamentally, and a stable running effect is achieved.

The invention relates to a desulfurization and denitrification method for coke oven flue gas, and aims to solve the problems of high running cost and generation of secondary pollution in an existing desulfurization and denitrification process of the coke oven flue gas. The method involved in the invention is characterized by comprising the following steps: removing sulfide from coke oven gas or blast furnace gas to be burned in a coke oven before the coke oven gas or blast furnace gas enters the coke oven, and then enabling the coke oven gas or blast furnace gas to burn; recording the coke oven flue gas containing the sulfide and nitrogen oxides educed from a coke oven flue channel as logistics A, wherein the temperature of the logistics A is 120-320 DEG C; enabling the logistics A to enter a heat exchanger and form a logistics B after flue gas heat exchange with a chimney, wherein the temperature of the logistics B is 100-180 DEG C; enabling the logistics B to enter a cooling tower and form a logistics C after spraying, cooling and dust removal, wherein the temperature of the logistics C is 30-100 DEG C; enabling the logistics C to enter an adsorption tower containing a microcrystalline adsorbent and form a logistics D after adsorption of the sulfide and the nitrogen oxides; and enabling the logistics D to enter the chimney so as to be discharged after heat exchange with the logistics A and warming. Therefore, the above technical problems are well solved. The method can be applied to the industrial production of desulfurization and denitrification of the coke oven flue gas.

The invention discloses a low-temperature desulfurization and denitrification method for sintering flue gas, relates to a desulfurization and denitrification method for the sintering flue gas, and mainly aims to solve the problems of high running cost and generation of secondary pollution in an existing desulfurization and denitrification process of the sintering flue gas. The desulfurization anddenitrification method is characterized by removing nitrogen oxide and sulfide in the sintering flue gas by adopting an adsorption method, and performing salt-making treatment on the nitrogen oxide and sulfide in regenerated flue gas, so that the above problems are solved well. The desulfurization and denitrification method can be applied to the industrial production of desulfurization and denitrification of the sintering flue gas in iron and steel plants.

The invention relates to a sintering smoke gas low-temperature desulfurization and denitrification method, which mainly solves the problems of high operation cost and secondary pollution generation ofthe existing sintering smoke gas desulfurization and denitrification. The method has the technical scheme that a microcrystalline material adsorption method is used for eliminating nitric oxides andsulfides in the sintering smoke gas; the nitric oxides and sulfides in the regenerated smoke gas are oxidized to be used as resources. The problems are well solved. The method can be used in the industrial production of steel and iron factory smoke gas desulfurization and denitrification.

The invention relates to a low-temperature desulfurization and denitrification method of boiler smoke. The problems that existing boiler smoke desulfurization and denitrification are high in running cost, and generate secondary pollution are mainly solved. According to the low-temperature desulfurization and denitrification method of the boiler smoke, nitric oxide and sulfide in the boiler smoke are removed through an adsorption method, and nitric oxide and sulfide in regenerated smoke are subjected to salt manufacturing treatment. According to the technical scheme, by adopting the low-temperature desulfurization and denitrification method of the boiler smoke, the problems are well solved, and the method can be used for industrial production of desulfurization and denitrification of the boiler smoke.

The invention relates to a low-temperature desulfurization and denitrification method for coke oven flue gas. The invention mainly aims at solving the problems of high operating cost and secondary pollution of conventional desulfurization and denitrification of the coke oven flue gas. The low-temperature desulfurization and denitrification method disclosed by the invention adopts the technical scheme that the coke oven flue gas containing sulfide and nitrogen oxide, induced from a coke oven flue, enters a denitrification tower containing a denitrification catalyst; the nitrogen oxide and the sulfide in the coke oven flue gas are removed according to a catalytic reduction and adsorption method; the nitrogen oxide and the sulfide in regenerated flue gas are subjected to salt preparation treatment, the problems are better solved; the method can be used in the industrial production of desulfurization and denitrification of the coking flue gas.

The invention relates to a low-temperature desulfurization and denitrification method for coke oven flue gas. The invention mainly aims at solving the problems of high operating cost and secondary pollution of conventional desulfurization and denitrification of the coke oven flue gas. The low-temperature desulfurization and denitrification method disclosed by the invention adopts the technical scheme that nitrogen oxide and sulfide in the coke oven flue gas are removed according to a microcrystalline material adsorption method; nitrogen oxide and sulfide in regenerated flue gas are oxidized and recycled, the technical problems are better solved. The method can be used in the industrial production of desulfurization and denitrification of the coking flue gas.

The invention relates to a pelletizing smoke gas desulfurization and denitrification method, which mainly solves the problems of high operation cost and secondary pollution generation of the existingpelletizing smoke gas desulfurization and denitrification. The method has the technical scheme that an adsorption method is used for eliminating nitric oxides and sulfides in pelletizing smoke gas; the nitric oxides and sulfides in the regenerated smoke gas are subjected to salt preparation treatment. The problems are well solved. The method can be used in the industrial production of steel and iron factory smoke gas desulfurization and denitrification.

The invention relates to a desulfurization and denitration method for boiler flue gas. The method is mainly used for solving the problem that the existing boiler flue gas desulfurization and denitration are high in operating cost and secondary pollution is caused. According to the method, through adopting the technical scheme that nitrogen oxides and sulfides are removed from the boiler flue gas by an adsorption method, and the nitrogen oxides and the sulfides in the regenerated flue gas are subjected to salt making treatment, the above problem is better solved; the method can be applied to industrial production of desulfurization and denitration of the boiler flue gas.

The invention relates to a method for desulfurization and denitration of sintering flue gas. The problems that an existing technique for desulfurization and denitration of sintering flue gas has highoperation cost and secondary pollution are solved mainly. According to the technical scheme, an adsorption method is adopted to remove nitrogen oxides and sulfides in the sintering flue gas, and saltmanufacturing treatment is performed on nitrogen oxides and sulfides in regenerated flue gas, so that the problems are solved well; and the method can be applied to industrial production of desulfurization and denitration of flue gas in steel plants.

The invention relates to a desulfurization and denitrification method for pelletizing sintering flue gas, and mainly aims to solve the problems of high running cost and generation of secondary pollution in an existing desulfurization and denitrification process of the pelletizing sintering flue gas. The method is characterized by removing nitrogen oxide and sulfide in the pelletizing sintering flue gas by adopting an adsorption method, and performing salt-making treatment on the nitrogen oxide and sulfide in regenerated flue gas, so that the above problems are solved well. The method can be applied to the industrial production of desulfurization and denitrification of flue gas in iron and steel plants.

Low-temperature comprehensive desulfurization and denitration method for boiler flue gas. The invention relates to a desulfurization and denitration method for boiler flue gas. The method is mainly used for solving the problem that the existing boiler flue gas desulfurization and denitration are high in operating cost and secondary pollution is caused. According to the method, through adopting thetechnical scheme that coke-oven gas or blast furnace gas entering a boiler furnace for combustion is subjected to sulfide removal prior to entering a coke oven and then is burnt, nitrogen oxides andsulfides are removed from the boiler flue gas by an adsorption method, and the nitrogen oxides and the sulfides in the regenerated flue gas are subjected to salt making treatment, the above problem isbetter solved; the method can be applied to industrial production of desulfurization and denitration of the boiler flue gas.

The invention relates to a desulfurization and denitrification method of boiler smoke. The problems that existing boiler smoke desulfurization and denitrification are high in running cost, and generate secondary pollution are mainly solved. According to the desulfurization and denitrification method of the boiler smoke, for coke oven gas or blast furnace gas which enters a boiler for burning, before the coke oven gas or the blast furnace gas enters the boiler, sulfide is removed at first, then burning is conducted, nitric oxide and the sulfide in the boiler smoke are removed through an adsorption method, and nitric oxide and sulfide in regenerated smoke are subjected to salt manufacturing treatment. According to the technical scheme, by adopting the desulfurization and denitrification method of the boiler smoke, the problems are well solved, and the method can be used for industrial production of desulfurization and denitrification of the boiler smoke.

The invention relates to a desulfurization and denitrification method of boiler smoke. The problems that existing boiler smoke desulfurization and denitrification are high in running cost, and generate secondary pollution are mainly solved. According to the desulfurization and denitrification method of the boiler smoke, micro-crystal materials are adopted, for coke oven gas or blast furnace gas which enters a boiler for burning, before the coke oven gas or the blast furnace gas enters the boiler, sulfide is removed at first, then burning is conducted, nitric oxide and the sulfide in the boilersmoke are removed through an adsorption method, and nitric oxide and sulfide in regenerated smoke are subjected to oxidization for resource utilization. According to the technical scheme, by adoptingthe desulfurization and denitrification method of the boiler smoke, the technical problems are well solved, and the method can be used for industrial production of desulfurization and denitrificationof the boiler smoke.

The invention relates to a desulfurization and denitrification method of coke oven flue gas and mainly solves the problem that existing desulfurization and denitrification operation for coke oven fluegas has high cost and causes secondary pollution. According to the technical scheme, the method herein includes: allowing coke oven flue gas to enter a denitrifying column with a denitrifying catalyst, allowing the flue gas to enter a cooling column after catalytic reduction, cooling by spraying, removing dust, allowing the flue gas to enter an adsorbing column with a microcrystalline adsorbent to adsorb sulfides and oxygen nitrides, and discharging the flue gas via a chimney; subjecting the oxygen nitrides and sulfides in the regenerated flue gas to salt manufacturing. The above problem is well solved by using the method; the method is suitable for the industrial production of desulfurization and denitrification of coking flue gas.

Low-temperature desulfurization and denitration method for boiler flue gas. The invention relates to a desulfurization and denitration method for boiler flue gas. The method is mainly used for solvingthe problem that the existing boiler flue gas desulfurization and denitration are high in operating cost and secondary pollution is caused. According to the method, through adopting the technical scheme that nitrogen oxides and sulfides are removed from the boiler flue gas by a microcrystalline material adsorption method, and the nitrogen oxides and the sulfides in the regenerated flue gas are subjected to oxidation for resource-converting utilization, the above technical problem is better solved; the method can be applied to industrial production of desulfurization and denitration of the boiler flue gas.

The invention relates to a desulfurization and denitrification method for pelletizing exhaust gas. The method is mainly adopted for solving the problems of high running cost and secondary pollution ofpresent desulfurization and denitrification for pelletizing exhaust gas. According to the invention, the technical scheme of adopting an absorbing method for removing nitric oxide and sulfide from pelletizing exhaust gas and then performing salt-production treatment on nitric oxide and sulfide in the regenerated exhaust gas is adopted for solving the problems. The method can be applied to industrial production of exhaust gas desulfurization and denitrification in steelworks.

The invention provides a low-temperature desulfurization and denitrification method for coke oven flue gas, relates to the desulfurization and denitrification method for the coke oven flue gas, and aims to solve the problems of high running cost and generation of secondary pollution in an existing desulfurization and denitrification process of the coke oven flue gas. The method involved in the invention is characterized in that a microcrystalline material adsorption method is adopted to remove sulfide from coke oven gas or blast furnace gas to be burned in a coke oven before the coke oven gasor blast furnace gas enters the coke oven, and then the coke oven gas or blast furnace gas burns; an adsorption method is then used to remove nitrogen oxides and the sulfide from the coke oven flue gas; and oxidation is performed on the nitrogen oxides and the sulfide in the regenerated flue gas to realize resource utilization. Therefore, the above technical problems are well solved. The method can be applied to the industrial production of desulfurization and denitrification of the coke oven flue gas.

The invention relates to a desulfurization and denitrification method for coke oven flue gas. The invention mainly aims at solving the problems of high operating cost and secondary pollution of conventional desulfurization and denitrification of the coke oven flue gas. The desulfurization and denitrification method disclosed by the invention adopts the technical scheme that sulfide is removed before the coke oven gas or blast furnace gas enters a coke oven and then the coke oven gas is burnt; the method comprises the following steps: the coke oven gas containing the sulfide and nitrogen oxide,induced from the coke oven flue, is marked as a material flow A; the material flow A is subjected to waste heat utilization to produce steam, and the cooled flue gas forms a material flow B; the material flow B enters a heat exchanger, and is subjected to heat exchange with flue gas from a chimney to form a material flow C; the material flow C enters the cooling tower for cooling and dedusting toform a material flow D; the material flow D enters the adsorption tower containing a microcrystalline adsorbent for adsorbing the sulfide and the nitrogen oxide to form a material flow E; the material flow E is subjected to heat exchange with the material flow C, is heated up and then enters the chimney for emission, the problems are better solved; the method can be used in the industrial production of desulfurization and denitrification of the coking flue gas.

The invention relates to a low-temperature desulfurization and denitrification method of boiler smoke. The problems that existing boiler smoke desulfurization and denitrification are high in running cost, and generate secondary pollution are mainly solved. According to the low-temperature desulfurization and denitrification method of the boiler smoke, the boiler smoke which is led out of a boilerflue and contains sulfide and nitric oxide enters a denitrification tower containing a denitrification catalyst, enters a heat exchanger after being subjected to catalytic reduction, enters adsorptiontowers which contain micro-crystal adsorption agents after exchanging heat with smoke which goes to a chimney to enable the sulfide and the nitric oxide to be adsorbed, and then enters the chimney for discharge; nitric oxide and sulfide in regenerated smoke are subjected to salt manufacturing treatment. According to the technical scheme, by adopting the low-temperature desulfurization and denitrification method of the boiler smoke, the problems are well solved, and the method can be used for industrial production of desulfurization and denitrification of the boiler smoke.

The invention relates to a boiler flue gas desulfurization and denitrification method and mainly aims to solve the problems that conventional boiler flue gas desulfurization and denitrification operation cost is high and secondary pollution can be caused. By adopting the technical scheme that before a coke oven gas or a blast furnace gas is fed into a boiler, sulfide is firstly removed from the coke oven gas or the blast furnace gas which is combusted in the boiler, nitric oxides and sulfide in a boiler gas are removed by using an adsorption method after combustion, and the nitric oxides and the sulfide in a regenerated flue gas are subjected to salt production treatment, the problems are well solved, and the method can be applied to industrial production of boiler flue gas desulfurizationand denitrification.

The invention relates to a desulfurization and denitration method for boiler flue gas. The method is mainly used for solving the problem that the existing boiler flue gas desulfurization and denitration are high in operating cost and secondary pollution is caused. According to the method, through adopting the technical scheme that nitrogen oxides and sulfides are removed from the boiler flue gas by an adsorption method, and the nitrogen oxides and the sulfides in the regenerated flue gas are subjected to salt making treatment, the above problem is better solved; the method can be applied to industrial production of desulfurization and denitration of the boiler flue gas.

The invention relates to a desulfurization and denitrification method of boiler smoke. The problems that existing boiler smoke desulfurization and denitrification are high in running cost, and generate secondary pollution are mainly solved. According to the desulfurization and denitrification method of the boiler smoke, micro-crystal materials are adopted, for coke oven gas or blast furnace gas which enters a boiler for burning, before the coke oven gas or the blast furnace gas enters the boiler, sulfide is removed at first, then burning is conducted, nitric oxide and the sulfide in the boilersmoke are removed through an adsorption method, and nitric oxide and sulfide in regenerated smoke are subjected to oxidization for resource utilization. According to the technical scheme, by adoptingthe desulfurization and denitrification method of the boiler smoke, the technical problems are well solved, and the method can be used for industrial production of desulfurization and denitrificationof the boiler smoke.

The invention relates to a desulfurization and denitrification of pelletizing flue gas, and mainly solves the problems of high running cost and secondary pollution of existing pelletizing flue gas desulfurization and denitrification. According to the method disclosed by the invention, through a technical scheme of removing nitric oxide and sulfide in the pelletizing flue gas by adopting an adsorption method and carrying out salt production treatment on the nitric oxide and the sulfide in regenerated flue gas, the problems can be well solved; the method can be used for industrial production offlue gas desulfurization and denitrification of a steel plant.

The invention relates to a desulfurization and denitrification method for sintering flue gas, and mainly aims to solve the problems of high running cost and generation of secondary pollution in an existing desulfurization and denitrification process of the sintering flue gas. The method is characterized by removing nitrogen oxide and sulfide in the sintering flue gas by adopting an adsorption method, and performing salt-making treatment on the nitrogen oxide and sulfide in regenerated flue gas, so that the above problems are solved well. The method can be applied to the industrial production of desulfurization and denitrification of flue gas in iron and steel plants.

The invention relates to a low-temperature desulfurization and denitrification method for coke oven flue gas. The invention mainly aims at solving the problems of high operating cost and secondary pollution of conventional desulfurization and denitrification of the coke oven flue gas. The low-temperature desulfurization and denitrification method disclosed by the invention adopts the technical scheme that nitrogen oxide and sulfide in the coke oven flue gas are removed according to a microcrystalline material adsorption method; the nitrogen oxide and the sulfide in regenerated flue gas are oxidized and recycled, the technical problems are better solved. The method can be used in the industrial production of desulfurization and denitrification of the coking flue gas.

The invention relates to a desulfurization and denitration method of sintering flue gas and mainly solves the problem that existing sintering flue gas desulfurization and denitration are high in operation cost and generate secondary pollution. The method includes following steps: recording sintering flue gas containing sulfide and nitrogen oxide guided out from a sintering flue as material flow A;utilizing waste heat of the material flow A to generate steam, and cooling flue gas to form material flow B; allowing the material flow B to enter a heat exchanger, and exchanging heat with flue gasgoing to a chimney to form material flow C; allowing the material flow C to enter a cooling tower, and cooling and dedusting to form material flow D; allowing the material flow D to enter an adsorption tower containing a microcrystalline adsorbent, wherein material flow E is formed after the sulfide and the nitrogen oxide are adsorbed; exchanging heat of the material flow E with that of the material flow C, rising temperature of the material flow E, and allowing the same to enter the chimney for emission. The above problem is solved well, and the method can be used for industrial production ofsteelwork flue gas desulfurization and denitration.