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Air purifier for removing harmful gas and dust in long tunnel

A harmful gas and dust technology, which is applied in the field of traffic engineering, traffic tunnel construction, and mine shaft construction without gas gushing. It can solve the problems of long ventilation time, large pressure loss, and high equipment damage rate, so as to shorten the ventilation time, The effect of improving air quality and speeding up construction progress

Inactive Publication Date: 2012-06-20
谢飞鸿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an air purifier for removing harmful gases and dust in long tunnels, so as to overcome the shortcomings of existing ventilation methods, such as large pressure loss, long ventilation time, low efficiency, high equipment damage rate, and high use cost

Method used

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  • Air purifier for removing harmful gas and dust in long tunnel
  • Air purifier for removing harmful gas and dust in long tunnel
  • Air purifier for removing harmful gas and dust in long tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The harmful gases CO and CO in the tunnel are periodically removed by the mobile fan. 2 , NO, NO 2 , sulfide and dust are sent to the degradation tank by the fan. Adopt centrifugal fan, pressure 4kPa, air volume 2300m 3 / h, inhaling harmful gases CO, CO in the tunnel 2 , NO, NO 2 , sulfide, dust, sent to the degradation tank, through the reaction or cleaning with the alkaline compound in the degradation tank, preferably the alkaline compound sodium carbonate, CO, a small amount of NO, water vapor that is difficult to react with the alkaline compound, filtered through the porous fiber separation membrane after water vapor. The CO and a small amount of NO filtered from the porous fiber separation membrane enter the low-temperature pressure swing adsorption tower with a temperature of 10 to 30 °C for adsorption. The electrothermal heating belt heats the adsorption tower to 80-135°C, preferably 100°C, to desorb CO and NO.

Embodiment 2

[0034] The harmful gases CO and CO in the tunnel are periodically removed by the mobile fan. 2 , NO, NO 2 , sulfide and dust are sent to the degradation tank by the fan. Adopt centrifugal fan, pressure 3kPa, air volume 2700m 3 / h, inhaling harmful gases CO, CO in the tunnel 2 , NO, NO 2 , sulfide, dust, sent to the degradation tank, through the reaction or cleaning with the alkaline compound in the degradation tank, preferably the alkaline compound sodium carbonate, CO, a small amount of NO, water vapor that is difficult to react with the alkaline compound, filtered through the porous fiber separation membrane after water vapor. The CO and a small amount of NO filtered from the porous fiber separation membrane, at a pressure of 3 kPa, enter the low temperature pressure swing adsorption tower with a temperature of 10 to 30 ° C for adsorption, CO and a small amount of NO are adsorbed in the adsorption tower, and then the pressure swing adsorption tower is adsorbed and transp...

Embodiment 3

[0036]The harmful gases CO and CO in the tunnel are periodically removed by the mobile fan. 2 , NO, NO 2 , sulfide and dust are sent to the degradation tank by the fan. Adopt centrifugal fan, pressure 2kPa, 2900m 3 / h, inhaling harmful gases CO, CO in the tunnel 2 , NO, NO 2 , sulfide, dust, sent to the degradation tank, through the reaction or cleaning with the alkaline compound in the degradation tank, preferably the alkaline compound sodium carbonate, CO, a small amount of NO, water vapor that is difficult to react with the alkaline compound, filtered through the porous fiber separation membrane after water vapor. CO and a small amount of NO filtered from the porous fiber separation membrane, at a pressure of 2kPa, enter a low temperature pressure swing adsorption tower with a temperature of 10 to 30 °C for adsorption, CO and a small amount of NO are adsorbed in the adsorption tower, and then the pressure swing adsorption tower is adsorbed and transported out In the tu...

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Abstract

The invention relates to an air purifier for removing harmful gas and dust in a long tunnel, which aims to solve difficulty of ventilation in construction of the long tunnel. By the aid of a centrifugal fan, harmful gas CO, CO2, NO, NO2, sulfide and dust in the long tunnels are delivered into a degradation tank through an induced draft hood and a connecting pipe. Residual CO and NO after degradation are delivered into an adsorption box through a connecting pipe, steam in residual gas is filtered by porous fiber separation membrane, residual CO and a small quantity of NO are adsorbed by a low-temperature variable-pressure adsorption tower after the processes of degradation and membrane filtering, the variable-pressure adsorption tower adsorbing CO and NO is delivered out of the tunnel, and then CO and NO are desorbed after the adsorption tower is heated to the temperature ranging from 80 DEG C to 135 DEG C by electric heating tapes in the adsorption tower. The air purifier for removing harmful gas and dust in the long tunnel has the advantages that harmful gas delivery distance is short, ventilation time is short, ventilation efficiency is high, service cost is low and the like, pollution caused by harmful gas of a tunneling face to the integral tunnel can be avoided effectively, and the air purifier is applicable to removing harmful gas and dust of the tunneling face of the long tunnel.

Description

technical field [0001] The invention relates to the degradation and adsorption of harmful gases in a single-headed long tunnel constructed by blasting and excavation, and belongs to the field of traffic engineering. It is especially suitable for the construction of traffic tunnels, and also for the construction of mine shafts and roadways without gas gushing. Background technique [0002] The content of toxic gases in the blasting smoke produced by explosives during blasting and excavation of tunnels, hydraulic tunnels and mine roadways is an important indicator for evaluating its safety level. The explosive products of toxic gases are mainly CO and CO. 2 , NOx, sulfide, dust. The affinity of carbon monoxide with heme in red blood cells is 250 to 300 times greater than that of oxygen. After it is inhaled into the human body, it hinders the normal combination of oxygen and heme, causing hypoxia in various tissues and cells of the human body, causing poisoning and even death....

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F5/02B01D53/74B01D53/60B01D53/62B01D53/047B01J20/34
CPCY02A50/20
Inventor 谢飞鸿
Owner 谢飞鸿
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