Hydrate-based particulate matter/waste gas synergistic removal system and method

A hydrate and particulate matter technology, applied in the field of hydrate-based particulate matter/exhaust gas collaborative removal system, can solve the problems of ineffective capture of particulate matter/coking exhaust gas, etc., to achieve resource treatment, reduce emissions, and one-time investment Reduced effect

Active Publication Date: 2020-04-03
DALIAN UNIV OF TECH
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Problems solved by technology

The effects of the above methods of particle capture are greatly limited by particle size. In the actual production process, the particle size distribution of particles / coking waste gas produced by coking plants is very wide. The current particle condensation technology is not suitable for micron The agglomeration efficiency of super-grade particles is very high, which can reach 99.99%, but the agglomeration efficiency is positively correlated with the particle size, especially when the collection efficiency of particles below 10nm is less than 40%. At this time, the above method can no longer effectively capture particles / Coking waste gas for cleaning

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  • Hydrate-based particulate matter/waste gas synergistic removal system and method

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Embodiment 1

[0031] This embodiment is a hydrate-based method for synergistic removal of particulate matter / coking waste gas in iron and steel coking plants, combining figure 1 , the process is as follows:

[0032] Step 1: Carrying CH produced in the production process of the steel coking plant 4 、H 2 、H 2 The high-temperature coal particles and coke dust of waste gas such as S are transported to the waste heat recovery device, and the temperature is lowered to obtain CH 4 、H 2 、H 2 Normal temperature coal coke dust of waste gas such as S;

[0033] Step 2: will contain CH 4 、H 2 、H 2 The normal temperature coal particles and coke dust of waste gas such as S are transported to the hydrate primary dedusting tower, and the CH 4 、H 2 、H 2 Normal temperature coal particles and coke dust of waste gas such as S are humidified in the water pool in the tower to obtain wet gas-containing particles, and then R134a gas is passed into the hydrate primary dedusting tower to form in the tower ...

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Abstract

The invention discloses a hydrate-based particulate matter/waste gas synergistic removal system and method. Particulate matters/coking waste gas can be synthesized into a gas hydrate by utilizing R134a, so that particulate matters/coking waste gas synergistic removal can be realized in a pollution-free and low-energy-consumption manner. The system comprises a waste heat recovery device, a hydratefirst-stage dust removal tower, a solid-liquid separation first-stage tower, a hydrate second-stage dust removal tower, a solid-liquid separation second-stage tower, a hydrate decomposition tank, a gas-solid separation tower and a low-temperature fractionation device. According to the system, various harmful substances such as heavy metals and coking waste gas can be removed while particulate matters are removed, compared with an existing particulate matter control and waste gas treatment device, a hydrate method device is greatly simplified, various pollutants can be effectively removed, andenergy conservation and environment protection are achieved.

Description

technical field [0001] The invention belongs to the field of atmospheric particle control, in particular to a hydrate-based particle / exhaust gas collaborative removal system and method. Background technique [0002] Iron and steel production is one of the main sources of particulate matter and polluted waste gas in various industrial productions in my country. According to the "China Environmental Statistical Yearbook Data", in 2014, the annual emission of particulate matter from iron and steel in the country reached 9.4x10 5 tons of sulfur dioxide, nitrogen oxides and other exhaust gases up to 3.1x10 5 Coking production is one of the largest sources of air pollution in the iron and steel industry. Coking production not only produces a large number of micro-nano particles, but also produces a large number of volatile components, such as raw gas. Coke is the main product of coking, and a large amount of hydrocarbons, sulfides, cyanides, ammonia, dust and other air pollutant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/02
CPCB01D47/02B01D53/1493B01D2257/108B01D2257/304B01D2257/7025B01D2258/025Y02C20/20B01D53/005B01D53/62B01D53/75B01D53/78B01D53/96B01D2258/0283
Inventor 宋永臣赵佳飞杨磊李曼孙中旺张伦祥刘卫国李洋辉刘瑜杨明军张毅王大勇凌铮蒋兰兰陈聪赵越超
Owner DALIAN UNIV OF TECH
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