A method for purifying flue gas from a gas-fired internal combustion engine

A gas-fired internal combustion engine and flue gas purification technology, applied in the direction of internal combustion piston engine, combustion engine, exhaust gas treatment, etc., can solve the problems of unfavorable reduction reaction denitration process, high nitrogen oxide concentration, high nitrogen oxide emission concentration, etc. Denitration efficiency and effective use of ammonia, reduction of denitration costs, and effects of low ammonia leakage
CN103437869BInactive Publication Date: 2015-10-21NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV
Publication Date
2015-10-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for purifying smoke of a gas internal combustion engine. The method is characterized by comprising the following steps of: cylinder head denitration and flue denitration, wherein cylinder head denitration is as follows: the ammonia gas is pressurized to pressure of over 10 kilograms by virtue of a cylinder head ejector pump and enters into a cylinder head ejector, the opening and closing of the cylinder head ejector are controlled by signals, and the cylinder head ejector ejects the ammonia gas into an engine combustion chamber or an exhaust branch nearby an exhaust valve; and flue denitration is as follows: the ammonia gas is pressurized to the pressure of over 10 kilograms by virtue of a flue ejector pump and enters into a flue ejector, and then the flue ejector ejects the ammonia gas to a smoke discharging pipe of an the engine. The method disclosed by the invention is applicable to a gap type working mode of the internal combustion engine, can be used for effectively carrying out purifying treatment on the smoke of the gas internal combustion engine, so that the smoke meets the environmental protectionly-friendly requirements better.
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Description

technical field

[0001] The invention relates to a method for purifying flue gas of a gas internal combustion engine. Background technique

[0002] Gas generator set refers to the power generation equipment that uses natural gas, coal bed methane, biogas, landfill gas, straw gasification gas, blast furnace gas, coke oven gas and other gas as fuel, uses internal combustion engine as combustion device and drives generator to output electric energy. Gas-fired generator sets are widely used in the fields of energy saving, emission reduction and new energy utilization. They belong to the development direction encouraged by the state and have developed rapidly in recent years. With the comprehensive advancement and continuous deepening of flue gas denitrification work in thermal power plants in my country, it has become a new field of flue gas denitrification for the gas-fired internal combustion engine power generation industry with small power generation but a large number. [0...

Claims

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