78results about How to "Simple and reliable regeneration operation" patented technology

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 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 discloses a desulfurization and denitrification method for sintering flue gas. The method is specifically implemented according to the following steps of (1), introducing the sintering flue gas in a sintering flue into a spray tower, and carrying out spray cooling to 10-60 DEG C; (2), introducing the sintering flue gas subjected to spray cooling into adsorption towers containing microcrystalline adsorbents, and discharging gas absorbing sulfide and nitrogen oxide through a chimney; and (3), regenerating the saturated adsorption tower for adsorbing the sulfide and nitrogen oxide with hot air, introducing regenerated flue gas into an oxidation tower containing an oxidation catalyst, performing catalytic oxidation, introducing the gas into a regenerated tail gas desulfurizationtower, spraying with water or alkali liquor, introducing the gas into a cooling tower, and discharging the gas. The problem of secondary pollution caused by the desulfurization and denitrification method for the sintering flue gas in the prior art is solved.

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.

The invention relates to an ammonia removal method of distilled ammonia wastewater. The invention mainly aims at solving the technical problems that high ammonia nitrogen and tar in the distilled ammonia wastewater affect the subsequent ammonia distillation efficiency and operation discharge of biochemical devices. For solving the technical problems, the invention adopts the following technical scheme: high ammonia nitrogen distilled ammonia wastewater is fed into an adsorption tower filled with an adsorbent, wherein the adsorbent is a molecular sieve adsorbent; purified water is fed into a reservoir and one part of the purified water is used as cooling water for recycling. The treating method can be used for the industrial production flow of distilled ammonia wastewater treatment.

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 relates to a method for desulfurization and denitrification of sintering exhaust gas. The method is mainly adopted for solving the problems of high running cost and secondary pollution of present desulfurization and denitrification for sintering exhaust gas. According to the invention, the technical scheme of adopting an absorbing method for removing nitric oxide and sulfide from sintering 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 industrialproduction of exhaust gas desulfurization and denitrification in steelworks.

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 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 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.