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Blast furnace gas cloth bag dust extraction technology

A blast furnace gas and bag dust removal technology, applied in blast furnaces, dust collectors, blast furnace details, etc., can solve problems affecting dust removal effect and equipment corrosion, and achieve the effect of ensuring dust removal efficiency and preventing corrosion

Inactive Publication Date: 2018-07-06
天津浩创节能环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it cannot be ignored that the content of chloride ions in the cooled gas is relatively high, and the gas is very acidic, which will severely corrode the gas pipelines, valves and other equipment in the export system; Appropriate blast furnace gas will also affect the dust removal effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 A kind of blast furnace gas cloth bag dedusting process comprises the following steps:

[0026] (1) Preliminary dedusting of the raw blast furnace gas coming out of the blast furnace through the gravity dust collector to make it into semi-clean gas;

[0027] (2) sending the semi-clean gas prepared in the step (1) into a moisture absorption device, and dehumidifying the semi-clean gas;

[0028] (3) Pass the dehumidified semi-clean gas through a temperature controller to control its temperature at 100°C;

[0029] (4) Send the semi-clean gas prepared in step (3) into the bag filter for further dust removal, and turn it into clean gas, and then turn it into low-pressure, low-temperature clean gas with chlorine ions through TRT equipment, and enter dechlorination device;

[0030] (5) After being dechlorinated by the dechlorinator, it becomes clean gas, and then enters the gas pipeline network for use by users.

[0031] A dehumidification layer is arranged ins...

Embodiment 2

[0034] Embodiment 2 A blast furnace gas cloth bag dedusting process comprises the following steps:

[0035] (1) Preliminary dedusting of the raw blast furnace gas coming out of the blast furnace through the gravity dust collector to make it into semi-clean gas;

[0036] (2) sending the semi-clean gas prepared in the step (1) into a moisture absorption device, and dehumidifying the semi-clean gas;

[0037] (3) Pass the dehumidified semi-clean gas through a temperature controller to control its temperature at 250°C;

[0038] (4) Send the semi-clean gas prepared in step (3) into the bag filter for further dust removal, and turn it into clean gas, and then turn it into low-pressure, low-temperature clean gas with chloride ions through the pressure reducing valve group, and enter the dedusting process. Chlorine;

[0039] (5) After being dechlorinated by the dechlorinator, it becomes clean gas, and then enters the gas pipeline network for use by users.

[0040] A dehumidification...

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PUM

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Abstract

The invention provides a blast furnace gas cloth bag dust extraction technology. The blast furnace gas cloth bag dust extraction technology comprises the following steps that (1) crude blast furnace gas coming from a blast furnace passes through a gravity dust separator to become semi-clean gas; (2) the semi-clean gas is fed into a moisture absorption device to be subject to moisture absorption treatment; (3) the gas obtained after moisture absorption passes through a temperature controller; (4) the semi-clean gas in the step (3) is fed into a cloth bag dust extraction device to be subject tofurther dust extraction, then the gas becomes low-pressure low-temperature chloridion-carrying clean gas through power generation of TRT equipment or a pressure reducing valve set, and the gas entersa dechlorinating device; and (5) the clean gas is subject to dechlorinating through the dechlorinating device to become clean gas, and the gas enters a gas pipe network to be used by a user. Accordingto the technology, the moisture absorption device is additionally arranged, and the dust extraction efficiency can be guaranteed; the cloth bag dust extraction device adopts a glass fiber punched felt dust extraction filter bag, and the technology can adapt to dry dedusting treatment in high temperature conditions; and in addition, the dechlorinating device in the technology can wash away chloridions, and corrosion of corrosive matter on gas main pipes is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of bag dust removal, in particular to a blast furnace gas bag dust removal process. Background technique [0002] With the development of the iron and steel industry, newly built small and medium-sized blast furnaces generally use blast furnace gas dry dedusting; some large blast furnaces are newly built or expanded, and there is a tendency to use blast furnace gas dry dedusting. Compared with wet dust removal, blast furnace gas dry dust removal not only simplifies the process system, fundamentally solves the secondary water pollution and sludge treatment problems, but also has good effects of recovering gas physical heat, saving water and electricity. In addition, with the dry TRT, the sensible heat of the gas can be used reasonably, and the power generation level can be significantly improved. The state also expressly supports this energy-saving, emission-reduction, green and environmental-friendly techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/22C21B5/00
CPCC21B7/22C21B5/00
Inventor 田晓亮田永军田浩
Owner 天津浩创节能环保设备有限公司
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