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Purifying and recovering process of absolute dry bag-type converter gas negative energy

A converter gas and dry bag technology, which is applied to the improvement of process efficiency, furnaces, incinerators, etc., can solve the problems of easy corrosion of electrostatic precipitator plates, failure to recover heat, and high moisture content of gas, so as to reduce the system The effects of controlling elements, large recovery volume, and high calorific value of gas recovery

Active Publication Date: 2010-04-07
无锡市东方环境工程设计研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the prior art that the heat of high-temperature gas cannot be recovered, the moisture content of the gas is large, the secondary pollution, the emission concentration is high, the electrode plate of the electrostatic precipitator is easily corroded, and the gas explosion is caused by easy discharge, and provides a Negative Energy Purification and Recovery Process of Fully Dry Bag Converter Gas

Method used

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  • Purifying and recovering process of absolute dry bag-type converter gas negative energy
  • Purifying and recovering process of absolute dry bag-type converter gas negative energy
  • Purifying and recovering process of absolute dry bag-type converter gas negative energy

Examples

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Embodiment 1

[0022] A full-dry bag-type converter gas negative energy purification and recovery process, such as figure 1 As shown, the process steps are as follows:

[0023] The first step: gas capture: the raw gas in the furnace generated during the smelting process of the converter 1 is captured through the movable hood port 2 set above the furnace port;

[0024] Step 2: Coal gas cooling and waste heat recovery in the high temperature section: After the 1450°C gas captured by the movable hood port 2 enters the vaporization cooling flue 3 connected to the movable hood port 2, it is cooled to 900°C, while recovering the generated saturated steam, install a combustible gas explosion suppression device 16 for the flue in the middle section of the vaporization cooling flue 3 to reduce the oxygen content of the gas in the pre-burning and post-burning stages;

[0025] Step 3: Coal gas cooling and coarse dust removal in the middle and low temperature section: a tube bundle heat exchanger 4 is ...

Embodiment 2

[0030] A full-dry bag-type converter gas negative energy purification and recovery process, such as figure 1 As shown, the process steps are as follows:

[0031] The first step: gas capture: the raw gas in the furnace generated during the smelting process of the converter 1 is captured through the movable hood port 2 set above the furnace port;

[0032] Step 2: After the gas at 1650°C captured by the movable hood 2 enters the vaporization cooling flue 3 connected to the movable hood 2, it cools down to 1000°C through the heat exchange between the partition walls of the soda and water, and at the same time generates saturated steam with a pressure of 2.4MPa As a by-product of this process link, a combustible gas explosion suppression device 16 for the flue is installed in the middle section of the vaporization cooling flue 3 to reduce the oxygen content of the gas in the pre-burning and post-burning stages, prolong the recovery period and reduce the probability of gas explosion...

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Abstract

The invention relates to a gas management process and discloses a purifying and recovering process of absolute dry bag-type converter gas negative energy, comprising the following process steps: gathering gas, lowering the temperature of high-temperature gas, recovering waste heat, lowering the temperature of low-and-medium temperature gas, purifying gas, recovering gas and spreading; by adopting the core processes of waste heat temperature reduction and bag-type filtering, the invention solves the existing defects of large water consumption, high discharging concentration, big energy consumption, low safety factor and high control difficulty by natural cycling temperature reduction and static physical filtration for removing dust, and has the characteristics of water and electricity saving, low discharging concentration, stable and safe discharge, high gas recovering heat value and favourable dust removal effect.

Description

technical field [0001] The invention relates to a gas treatment process, in particular to a full-dry bag-type converter gas negative energy purification recovery process for metallurgy, dust removal and other industries. Background technique [0002] In the process of converter steelmaking, there will be a large amount of flue gas containing monoxide tower and iron oxide dust. Since converter gas is a good industrial energy source, it is necessary to carry out necessary dust removal on dusty flue gas and recover valuable gas , Converter gas dust removal and recovery in the iron and steel industry are currently mainly based on wet process - OG process and dry process - LT, and the two processes coexist. OG (Oxygen Converter Gas Recovery System) wet dedusting process, because of its simple process, safe and reliable, easy to master, has been the first choice of domestic gas dedusting process, so far, more than 90% of domestic converter gas dedusting adopts this process. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/40F27D17/00F23G7/06
CPCY02E20/12Y02P10/25
Inventor 郑岩谈庆张鹏
Owner 无锡市东方环境工程设计研究所有限公司
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