Unlock instant, AI-driven research and patent intelligence for your innovation.

Cremation tail gas purification system and method

A purification system and exhaust gas technology, applied in chemical instruments and methods, combustion methods, separation methods, etc., can solve the problems of excessive purification exhaust emissions, poor purification effect, etc., to improve the degree of combustion, improve environmental protection, and reduce the content of Effect

Pending Publication Date: 2020-12-15
CHINA ENFI ENGINEERING CORPORATION
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a cremation tail gas purification system and purification method to solve the problem that the existing cremation machine tail gas purification system has a poor purification effect, resulting in excessive discharge of the purified tail gas

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cremation tail gas purification system and method
  • Cremation tail gas purification system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The cremation tail gas (450°C) discharged from the outlets of the underground flues of multiple cremation machines is sent into the collective flue by their corresponding front-end high-temperature fans 10, and then sent to the combustion device 20 (internal circulation regenerative combustion system) for secondary combustion. Combustion, and raise the temperature of the cremation tail gas to 900°C, stay for 5 seconds to obtain the combustion tail gas, and make the above combustion tail gas exchange heat with the subsequent supporting gas and cremation tail gas respectively, so as to realize the recycling of part of the heat energy.

[0063] The combustion tail gas after heat exchange is sent to the quenching device 30 for cooling, and the temperature of the combustion tail gas is lowered from 600° C. to 250° C. to obtain cooling gas.

[0064] The cooling gas enters the acid gas removal unit 50, and is sprayed into the alkaline acid removal agent NaHCO in the acid gas re...

Embodiment 2

[0068] The cremation tail gas (450°C) discharged from the outlets of the underground flues of multiple cremation machines is sent into the collective flue by their corresponding front-end high-temperature fans 10, and then sent to the combustion device 20 (internal circulation regenerative combustion system) for secondary combustion. Combustion, and raise the temperature of the cremation tail gas to 950°C, stay for 3 seconds to obtain the combustion tail gas, and make the above combustion tail gas exchange heat with the subsequent supporting gas and cremation tail gas respectively, so as to realize the recycling of part of the heat energy.

[0069] The combustion tail gas after heat exchange is sent to the quenching device 30 for cooling, and the temperature of the combustion tail gas is lowered from 580° C. to 250° C. to obtain cooling gas.

[0070] The cooling gas enters the acid gas removal unit 50, and is sprayed into the alkaline acid removal agent NaHCO in the acid gas re...

Embodiment 3

[0074] The cremation tail gas (450°C) discharged from the outlets of the underground flues of multiple cremation machines is sent into the collective flue by their corresponding front-end high-temperature fans 10, and then sent to the combustion device 20 (internal circulation regenerative combustion system) for secondary combustion. Combustion, and raise the temperature of the cremation tail gas to 950°C, stay for 3 seconds to obtain the combustion tail gas, and make the above combustion tail gas exchange heat with the subsequent supporting gas and cremation tail gas respectively, so as to realize the recycling of part of the heat energy.

[0075] The combustion tail gas after heat exchange is sent to the quenching device 30 for cooling, and the temperature of the combustion tail gas is lowered from 550° C. to 220° C. to obtain cooling gas.

[0076] The cooling gas enters the acid gas removal unit 50, and is sprayed into the alkaline acid removal agent Ca(OH) in the acid gas r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a cremation tail gas purification system and a cremation tail gas purification method. The cremation tail gas purification system comprises a fan, a combustion device, a shock cooling device, an acid gas removal unit and a catalytic denitration unit. The fan is provided with a cremation tail gas inlet and a cremation tail gas outlet; a first feeding hole of the combustion device is communicated with the cremation tail gas outlet, and a second feeding hole of the combustion device is used for conveying fuel and combustion-supporting gas; a combustion tail gas inlet of theshock cooling device is communicated with a combustion tail gas outlet; a cooling gas inlet formed in the acid gas removal unit is communicated with the cooling gas outlet; and a primary purified gasinlet and a primary purified gas outlet of the catalytic denitration unit are communicated through a primary purified gas conveying pipeline. By the adoption of the purification system, the removal rate of acid gas, oxynitride and the like in the cremation tail gas can be greatly increased, the content of dioxin is reduced, and the content of smoke dust in the purified tail gas is low.

Description

technical field [0001] The invention relates to the field of tail gas purification, in particular to a cremation tail gas purification system and a purification method. Background technique [0002] The incineration tail gas produced in the existing cremation process includes acid gas, nitrogen oxides, dust, dioxin and unburned harmful components, etc., and the above components have the problem of polluting the environment. In order to improve the environmental protection of the cremation machine, the purification equipment equipped with some pollutants is mainly targeted in this field. However, as the emission indicators become stricter, the flue gas emissions of the existing cremation machines are facing the risk of not meeting the standards. This requires a comprehensive and reasonable configuration of the flue gas purification system to achieve deep purification of the exhaust gas and meet the emission standards. [0003] The first existing document (CN 103157338 B) pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D53/86B01D53/56B01D53/78B01D53/40B01D46/02F23G7/06F23J15/00F23J15/06F23J15/08
CPCB01D46/02B01D53/02B01D53/40B01D53/78B01D53/8625B01D2251/2062B01D2251/2067B01D2251/304B01D2251/404B01D2251/604B01D2253/102B01D2255/20707B01D2255/20723B01D2255/20776F23G7/06F23J15/006F23J15/06F23J15/08
Inventor 陈德喜程虎姚建明高术杰刘霞
Owner CHINA ENFI ENGINEERING CORPORATION