Method and device for treating tail gases of ammonia tanks of coking plant

Abstract

The invention discloses a method and a device for treating tail gases of ammonia tanks of a coking plant. All tail gases of ammonia tanks of the coking plant are treated and then are directly used ina regeneration tower for production. The device comprises a tail gas collection port, a fan, a water dissolving and ammonia collecting gas tank, a gas compressor and a high-pressure storage tank whichare sequentially connected, a gas inlet is arranged at the bottom of the water dissolving and ammonia collecting gas tank and is connected with the fan, the tail gases are introduced to the bottom ofthe water dissolving and ammonia collecting gas tank through the fan and a pipeline and undergo water dissolving ammonia removal, a gas collector is arranged at the upper part of the water dissolvingand ammonia collecting gas, a gas released after dissolving ammonia in the tail gases with water in the water dissolving and ammonia collecting gas tank rises to the gas collector, is mixed with air,and then is connected with the gas compressor through a pipeline II, the gas compressor compresses the gas into the high-pressure storage tank for storage, and the high-pressure storage tank substitutes an compressor station to supply the gas to the regeneration tower. The whole method and the device have the advantages of reasonable constitution, maximal utilization of resources of the coking plant without or slightly increasing the energy consumption, effectiveness in treatment of the tail gases of the ammonia tanks, and achieving of the purposes of energy saving and consumption reduction.

Description

technical field [0001] The invention relates to a coking plant waste gas treatment technology, in particular to a coking plant ammonia tank tail gas treatment method and device. Background technique [0002] As we all know, the existing treatment technology used in the treatment of tail gas emissions from ammonia tanks in coking plants needs to consume a lot of energy or generate a lot of hazardous waste and cause waste of resources, which adds a lot of cost burden to production. [0003] Each ammonia tank in the coking plant will produce a large amount of ammonia-based waste gas, which will cause pollution if it is directly discharged into the atmosphere. The existing process equipment generally includes pickling, alkali cleaning, activated carbon adsorption, RCO, RTO, etc. First, the technological process and equipment are relatively complicated, and some also produce a large amount of hazardous waste, etc., and the treatment cost is high. Second, the waste gas after treat...

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Problems solved by technology

[0002] As we all know, the existing treatment technology used in the treatment of tail gas emissions from ammonia tanks in coking plants needs to consume a lot of energy or generate a lot of hazardous waste and cause waste of resources, which adds a lot of cost burden to production

[0003] Each ammonia tank in the coking plant will produce a large amount of ammonia-based waste gas, which will cause pollution if it is directly discharged into the atmosphere. The existing process equipment generally includes pickling, alkali cleaning, activated carbon adsorption, RCO, RTO, etc. First, the process and equipment are relatively complicated, and some of them also produce a large amount of hazardous waste, etc., and the treatment cost is high. Secondly, the waste gas after treatment is generally discharged into the atmosphere after reaching the standard, and the utilization rate is low.

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