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Gas distributed energy system and process using urea as reducing agent for denitrification

A distributed energy and reducing agent technology, applied in gas turbine devices, machine operation mode, separation method, etc., can solve the problems of low denitrification efficiency, nitrogen oxides can not meet the emission requirements, poor environmental performance, etc., to ensure denitrification. Ammonia efficiency, saving equipment investment and improving environmental performance

Active Publication Date: 2019-06-25
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Distributed energy systems using gas turbines do not have denitrification devices. Generally, improved combustion technology is used to achieve a certain effect of removing nitrogen oxides, but the removal rate generally does not exceed 60%, and the nitrogen oxides content in gas turbine exhaust is 50mg / m3 3 Left and right, the denitrification efficiency is relatively low, the nitrogen oxides cannot meet the emission requirements, and the environmental protection performance is poor

Method used

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  • Gas distributed energy system and process using urea as reducing agent for denitrification

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Embodiment 1

[0021] Embodiment 1 of the present invention: as figure 1 As shown, a gas-fired distributed energy system using urea as a reducing agent for denitration is composed of a gas turbine system 1, a denitration system 2, and a waste heat cooling and heating power generation system 3. The gas turbine system 1 is set on the top of the system, and the denitrification system 2 and the waste heat cooling and heating power generation system 3 are placed behind the gas turbine system 1 in sequence. The denitrification system 2 includes a bucket elevator 201, a dissolution tank 202, a delivery pump 203, a urea solution tank 204, a delivery circulation device 205, a flow valve 206, a metering distribution device 207, a pyrolysis chamber 208 and an SCR reactor 209 connected in sequence, The flow valve 206 is also connected to the urea solution tank 204 , and the metering distribution device 207 and the pyrolysis chamber 208 are both connected to the gas turbine system 1 . There are a large ...

Embodiment 2

[0024] Embodiment 2: as figure 1 As shown, the gas-fired distributed energy system process using urea as a reducing agent for denitrification adopts the above-mentioned gas-fired distributed energy system, including the following process flow:

[0025] In the gas turbine system 1, the air is pressurized by the air compressor 101 and becomes high-pressure air and enters the air preheater 102. The heated air enters the combustor 103 and combusts with natural gas. After the chemical energy of the fuel is fully released, the combustor 103 The outlet flue gas enters the gas turbine 104 to do work, converting mechanical energy into electrical energy; the flue gas at the outlet of the gas turbine 104 is used as a heat source to heat the air in the air preheater 102, and the flue gas at the outlet of the gas turbine 104 after heat exchange in the air preheater 102 flows through the flue gas Flow divider 105, a part of the flue gas is introduced into the metering distribution device 20...

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Abstract

The invention discloses a gas distributive energy system and a process, in particular a gas distributive energy system and a process using urea as a reducing agent for denitration, and belongs to the technical field of gas distributive energy supply. The system consists of a gas turbine system, a denitration system and an afterheat cooling and heating power generation system; the gas turbine system is arranged at the top of the system; and the denitration system and the afterheat cooling and heating power generation system are positioned behind the gas turbine system in sequence. The denitration system includes a bucket elevator, a dissolving tank, a conveying pump, an urea solution tank, a conveying circulating device, a flow valve, a metering distribution device, a pyrolysis chamber and a SCR reactor connected in sequence; and the metering distribution device and the pyrolysis chamber both communicate with the gas turbine system. The gas turbine system, the denitration system and the afterheat cooling and heating power generation system are coupled for denitration of outlet smoke to reduce emission of nitric oxides; and the power, the heat and the cold can be synchronously supplied to users to improve the comprehensive utilization efficiency of energy.

Description

technical field [0001] The invention relates to a gas distributed energy system and process, in particular to a gas distributed energy system and process using urea as a reducing agent for denitrification, and belongs to the technical field of gas distributed energy supply. Background technique [0002] With the development of my country's economy, the characteristics of traditional centralized coal-fired power plants such as low comprehensive utilization efficiency and poor environmental protection performance are gradually exposed, and the distributed energy industry with high power generation efficiency and good environmental protection performance has been vigorously developed. The gas distributed energy system has been vigorously developed due to its high comprehensive thermal efficiency, clean flue gas, and local utilization of the energy supply side. The fuel of gas distributed energy is natural gas, which will produce various nitrogen oxides during the combustion of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C6/18F01K23/10B01D53/90B01D53/56F25B29/00
CPCB01D53/8631B01D53/90B01D2251/2067F01K23/10F02C6/18F25B29/00F25B29/006
Inventor 江婷宋洪涛胡永锋沈建永徐静静张爱平张珍
Owner CHINA HUADIAN ENG