Pressure-equalizing bleeding device for ejecting furnace-top tank gas by high pressure gas

A technology of high-pressure gas and furnace top, which is applied in blast furnaces, blast furnace details, blast furnace parts, etc., can solve environmental pollution and other problems, and achieve the effects of avoiding environmental pollution and resource waste, good economic and social benefits, and consistent operating procedures

Inactive Publication Date: 2013-01-09
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented device helps reduce harmful emissions from industrial processes that use compressed gases like air or nitrogen for various purposes. It uses an apparatus called bagsfilter/ejectors to return pressurised materials back to their source without causing damage on surrounding areas due to leaks during transportation. Additionally, this system has lower costs compared with previous systems because it only requires one piece of equipment instead of multiple pieces connected together at once.

Problems solved by technology

This patented technical problem addressed in this patents relates to reducing greenhouse gases from blast production processes while minimizing harmful exhaust emissions generated when unbalanced fluctuations occur due to changes made over time or other factors such as changing atmospheres. Current methods involve adding water mist to control particulate matter levels in the materials used in blasts making up the charge. However, these techniques are limited because they result in significant amounts of wasted chemical products being introduced into the world' s oceans with negative impact on both ecosystems and human health concerns.

Method used

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  • Pressure-equalizing bleeding device for ejecting furnace-top tank gas by high pressure gas

Examples

Experimental program
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Effect test

Embodiment 1

[0040] When equalizing the pressure on the top of the blast furnace, the traditional pressure equalizing method is adopted, that is, the pressure equalizing valve 8 and the equalizing pressure relief valve 5 are opened once, and the semi-clean gas that has been dedusted by the gravity dust collector enters the weighing material tank 3 through the equalizing pressure relief pipe 4, And the dust in the cyclone dust collector 7 is blown back into the weighing tank 3 . If the primary pressure equalization cannot meet the requirements, open the secondary pressure charging valve 9 again, and carry out secondary pressure equalization on the weighing tank 3 with nitrogen to meet the appropriate pressure requirement; after the equalization is completed, close the relevant valves and open the feeding gate 2 , the charge enters the blast furnace from the weighing tank 3 through the blanking gate 2.

[0041] When venting from the top of the blast furnace, open the pressure equalizing vent...

Embodiment 2

[0043]During pressure equalization, the traditional pressure equalization method is adopted, that is, the pressure equalization valve 8 and the pressure equalization release valve 5 are opened once, and the semi-clean gas that has been dedusted by the gravity dust collector enters the weighing material tank 3 through the pressure equalization release pipe 4, and the cyclone The dust in the dust collector 7 is blown back into the weighing tank 3 . If the primary pressure equalization cannot meet the requirements, open the secondary pressure charging valve 9 again, and carry out secondary pressure equalization on the weighing tank 3 with nitrogen to meet the appropriate pressure requirement; after the equalization is completed, close the relevant valves and open the feeding gate 2 , the charge enters the blast furnace from the weighing tank 3 through the blanking gate 2.

[0044] When releasing, open the pressure equalizing release valve 5, the bag filter valve 11 and the natura...

Embodiment 3

[0046] During pressure equalization, the traditional pressure equalization method is adopted, that is, the pressure equalization valve 8 and the pressure equalization release valve 5 are opened once, and the semi-clean gas that has been dedusted by the gravity dust collector enters the weighing material tank 3 through the pressure equalization release pipe 4, and the cyclone The dust in the dust collector 7 is blown back into the weighing tank 3 . If the primary pressure equalization cannot meet the requirements, open the secondary pressure charging valve 9 again, and carry out secondary pressure equalization on the weighing tank 3 with nitrogen to meet the appropriate pressure requirement; after the equalization is completed, close the relevant valves and open the feeding gate 2 , the charge enters the blast furnace from the weighing tank 3 through the blanking gate 2.

[0047] When releasing, open the pressure equalizing release valve 5, the bag filter valve 11 and the natur...

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PUM

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Abstract

The invention discloses a pressure-equalizing bleeding device for ejecting furnace-top tank gas by high pressure gas. The pressure-equalizing bleeding device comprises a pressure-equalizing bleeding pipeline, a pressure-equalizing bleeding valve, a primary pressure-equalizing valve, a secondary pressure-equalizing valve, a cyclone cinder valve, a cyclone dust collector, a bag-type dust collector, a gravitational dust collector and a clean gas network. The pressure-equalizing bleeding device further comprises an ejector comprising two inlets and an outlet. A forced recovery valve and a working gas valve are respectively disposed on a pipeline connected with the ejecting gas inlet. A check valve is disposed on an outlet pipeline of the ejector. The ejector is further provided with a bypass pipeline, and a natural recovery valve is disposed on the bypass pipeline. When pressure-equalized gas bleeds from a tank, the pressure-equalized gas is recovered to the clean gas network through devices such as the bag-type dust collector and the ejector. Therefore, environmental pollution and resource waste due to direct entry of the pressure-equalized gas in atmosphere is avoided.

Description

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Claims

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Application Information

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Owner WISDRI ENG & RES INC LTD
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