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System for flue gas tail denitration of multiple gas internal combustion engines

A technology of gas internal combustion engine and internal combustion engine, which can be applied in the direction of internal combustion piston engine, combustion engine, gas treatment, etc., and can solve the problems of flue gas denitration and so on.

Pending Publication Date: 2019-03-29
北京工大环能科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to solve the problem of flue gas denitrification of multiple gas internal combustion engines or gas boilers

Method used

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  • System for flue gas tail denitration of multiple gas internal combustion engines
  • System for flue gas tail denitration of multiple gas internal combustion engines

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Embodiment Construction

[0022] The present invention will be further described below with reference to the drawings, taking a 2×4.4MW gas-fired internal combustion engine unit flue gas denitration system of a distributed energy station as an example.

[0023] The SCR flue gas denitration system of a 2×4.4MW gas internal combustion engine unit in a distributed energy station, such as figure 1 , the gas engine exhaust port 17 and the gas engine exhaust port 19, the power generation output is 4.4MW, and the flue gas volume is 19888Nm in dry state when the load rate of the gas engine is 100%. 3 / h, in standard state, dry basis 5% O 2 Condition NO x Both are 500mg / Nm 3 ; The air volume of the gas boiler is 38152.57m 3 / h, the exhaust gas temperature of the gas boiler is 400°C; the flue gas outlet temperature of each parallel lithium bromide equipment is 145°C; the suitable temperature range of catalyst 4 is 170-400°C.

[0024] The amount of flue gas in the bypass flue 15 is adjusted by the high temper...

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Abstract

The invention discloses a system for flue gas tail denitration of multiple gas internal combustion engines. The system comprises a gas boiler exhaust port, an exhaust port of the first internal combustion engine, an exhaust port of the second internal combustion engine, an exhaust port of the N internal combustion engine, a plurality of lithium bromide devices, an SCR reactor, a low temperature catalyst, a heat exchanger, a chimney, an ammonia gas generator, a urea solution tank, a compressed air tank, a urea solution pipe, a compressed air pipe, a spray gun, a regulating valve, a high-temperature frequency conversion fan, a bypass flue and a flue. According to the system, flue gas of the multiple gas internal combustion engines is collected and then subjected to nitrogen oxide treatment through the set of SCR reaction device, the system is high in energy efficiency, concise and compact, a large number of areas and spaces are saved, and the construction cost and the operating costare saved; and the invention further relates to the ammonia gas generator for preparing ammonia gas, and the ammonia gas conversion rate of urea is increased through optimization design of the structure of the ammonia gas generator.

Description

technical field [0001] The invention relates to a denitration system for the tail of flue gas of multiple gas-fired internal combustion engines, and belongs to the field of flue gas denitration of gas-fired internal combustion engines. Background technique [0002] Gas-fired internal combustion engines are widely used in energy-intensive areas such as municipalities, industrial parks, commercial real estate, buildings, hospitals, and schools. They achieve cascaded and efficient use of energy through the combined supply of heat, electricity, and cold energy, and are flexible, efficient, and low-emission. Features. The above special application occasions put forward higher requirements for the standard emission of nitrogen oxides in the flue gas of gas-fired internal combustion engines. [0003] In response to the high requirements for the emission standard of nitrogen oxides in the flue gas of gas-fired internal combustion engines, the general denitration process technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/94B01D53/56
CPCB01D53/9418B01D2258/0283B01D2251/2062Y02T10/12
Inventor 黄庆华
Owner 北京工大环能科技有限公司