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Device for removing hydrogen sulfide in industrial gas

An industrial gas and hydrogen sulfide technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of high operating cost, low desulfurization efficiency, large floor area, etc., and achieve small liquid circulation and reduce The effects of alkali consumption and equipment occupying a small area

Inactive Publication Date: 2016-08-24
CHONGQING AOGEMEI GAS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment adopts the high-gravity rotating packed bed technology, which overcomes the shortcomings of the existing tower equipment such as bulky volume, high investment cost, large floor area, high operating cost, and low desulfurization efficiency.

Method used

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  • Device for removing hydrogen sulfide in industrial gas
  • Device for removing hydrogen sulfide in industrial gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Removal of hydrogen sulfide from industrial gas: the gas volume to be treated in the process is 15000m3 3 / h, hydrogen sulfide content is 1200mg / m 3 . Preparation of desulfurization liquid 120m 3 , the total alkalinity of soda ash is 20g / L, the sodium carbonate is 0.2-0.6mol / L, the pH value is 7-10, the CoS catalyst is selected, and the concentration is 20-80ppm.

[0024] Turn on the supergravity rotary packed bed, and adjust the rotor speed of the rotary packed bed to 600r / min through the frequency converter. After the rotary packed bed is stable (about two minutes), open the liquid valve, start the lean liquid pump, and adjust the liquid volume to 100m 3 / h, turn on the rich liquid pump at the same time, after the liquid phase runs smoothly, turn on the gas phase, and gradually reach 15000m through the regulating valve 3 / h. The liquid phase system is heated through the steam pipeline, and the temperature is controlled at 30-50°C; the gas-liquid is absorbed in the...

Embodiment 2

[0026] For the removal of hydrogen sulfide in acid system gas, the gas to be treated is acid system gas in industrial synthesis gas (the volume content of carbon dioxide in this gas accounts for 98.6%, the volume content of hydrogen sulfide accounts for 0.68%, and the concentration is 10.6g / m 3 ), the gas volume to be treated in the process is 30000m 3 / h, hydrogen sulfide content is 10600mg / m 3 . First prepare the desulfurization liquid, the liquid volume is 300m 3 / h, soda ash total alkalinity is 35g / L, and sodium carbonate is 0.1~0.4mol / L, and pH value is 7~10, selects DDS catalyst for use, and the different component concentrations of catalyst are prepared according to technological requirements, and all the other are with example 1. According to the short residence time of the high-gravity rotating packed bed, the absorption of hydrogen sulfide by the desulfurization liquid is completed in an instant, thereby improving the selectivity of absorption, reducing side reacti...

Embodiment 3

[0028] Hydrogen sulfide in natural gas is removed, and the natural gas volume is 30,000m 3 / h, the concentration of hydrogen sulfide is 2400mg / m 3 . This example is a test carried out by using a rotating packed bed device under the condition that the desulfurization effect of the traditional tower equipment cannot meet the specified requirements. The operating condition is a liquid circulation volume of 400m 3 / h, the height of the tower in the original process is 32m, the diameter is 3.5m, and the removal rate is 75%. After adopting this process, the diameter of the rotating packed bed is 2m, the height is 3m, and the liquid volume is 250m 3 / h, the total alkalinity of soda ash is 40g / L, the sodium carbonate is 0.1-0.5mol / L, the pH value is 7-10, the ADA catalyst is selected, and the concentration is 2-3g / L. After the process system is stabilized, the removal rate of hydrogen sulfide can reach more than 98%, and the outlet concentration of hydrogen sulfide is lower than 50...

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Abstract

The invention relates to a device for removing hydrogen sulfide in industrial gas; a rotary packing bed is adopted as a gas-liquid mass transfer device; a gas inlet of the rotary packing bed is connected with sulfur-containing gas; a liquid inlet is connected with a barren liquid trough through a barren liquid pump, and an exhaust port of the rotary packing bed is connected with a defogger. The device for removing the hydrogen sulfide in the industrial gas has good desulfurization effect, and has the desulfurization rate reaching 98% or more. The device has small floor space, and the volume of the hypergravity rotary packing bed device is about 1 / 10 that of a traditional tower device; the mass transfer efficiency is high, the liquid circulation amount is small, the gas-phase pressure dropping amount is small, and the operation cost is low; the car driving and parking is convenient, and the whole technical system can be stabilized within several minutes; the hydrogen sulfide gas in an acid system is removed, the selectivity is high, and the alkaline consumption can be greatly reduced. The type and material of rotary packing can be chosen arbitrarily without restriction.

Description

technical field [0001] The invention relates to a device for removing hydrogen sulfide, which is suitable for removing hydrogen sulfide-containing gas in various industrial gases. Background technique [0002] There are many desulfurization technologies for hydrogen sulfide in industrial gases, and the widely used existing technologies mainly include dry desulfurization and wet desulfurization. Among them, dry desulfurization includes manganese ore method and zinc oxide method. The desulfurizers of these methods are not easy to regenerate, and the desulfurized desulfurizers must be discarded after desulfurization, which not only increases the cost of desulfurization, but also causes environmental pollution. Wet desulfurization mainly uses traditional tower equipment to absorb hydrogen sulfide. The tower equipment of this technology is bulky, the equipment investment is large, the liquid circulation volume is large, the air resistance is high, it is inconvenient to start an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/52
Inventor 刘德举谭庆友
Owner CHONGQING AOGEMEI GAS CO LTD
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