Normal temperature iron oxide desulfurizing agent, preparation method and application thereof

An iron oxide desulfurizer, iron oxide technology, applied in chemical instruments and methods, refining with metal oxides, separation methods, etc., can solve the problems of large equipment, large area, intermittent operation, etc., and achieve desulfurization efficiency. High, high desulfurization precision, large sulfur capacity effect

Inactive Publication Date: 2008-03-19
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fixed bed is usually used to remove hydrogen sulfide in gas at home and abroad. It has the disadvantages of bulky equipment, large floor area, intermittent operation, and only a few equipment can operate alternately.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of embodiment 1 normal temperature iron oxide desulfurizer

[0028] Add 490kg of 320-mesh sulfuric acid plant waste residue, 70kg of 320-mesh synthetic iron oxide, 105kg of 320-mesh clay, 14kg of cement, and 21kg of 320-mesh wood chips into 1m 3 Mix in a mixer for 1 hour, then mix and granulate the mixture with an aqueous solution with a urea content of 1% on a disc granulator to obtain reddish-brown balls with a diameter of 4.5 to 5 mm. The shaped balls were placed in an activation furnace for air activation at 140°C for 1.5 hours, then cooled to 40°C for packaging.

Embodiment 2

[0029] Example 2 Quality detection of normal temperature iron oxide desulfurizer

[0030] Detection method: HG / T2513-93, HG / T2976-99

[0031] Test results: working sulfur capacity (weight%) 42.3; specific surface area is 76.8m 2 / g; strength 83.4N / grain; bulk specific gravity 0.82g / cm 3 ; Loss on ignition 6.2%; Dimensions: Φ4.5 ~ 5, reddish-brown ball.

Embodiment 3

[0032] Example 3 Normal temperature iron oxide desulfurizer removes coke oven gas (1000Nm 3 / h) in hydrogen sulfide

[0033] 1. Composition of coke oven gas: see Table 1 for details.

[0034] Table 1 Composition of coke oven gas

[0035] composition

[0036] 2. Desulfurization reaction:

[0037] The hydrogen sulfide in the coke oven gas is removed by using the traditional normal temperature iron oxide desulfurizer and the normal temperature iron oxide desulfurizer provided by the present invention respectively.

[0038] Desulfurization equipment: moving bed with rotary slide structure.

[0039]The desulfurization process is as follows: the gas to be desulfurized enters from the bottom of the desulfurization tower, the desulfurizer enters from the upper part of the desulfurization tower, the gas and the desulfurizer come into countercurrent contact inside the desulfurization tower, thereby removing hydrogen sulfide in the gas, and the gas after removing hydrogen su...

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PUM

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Abstract

The invention provides a normal temperature ferric oxide desulfurizer which consists of ferric oxide, binding agent, hole making agent and chips. The invention also provides the preparation method of the desulfurizer and method of removing hydrogen sulphide in the raw gas by using the desulfurizer. The normal temperature ferric oxide desulfurizer provided by the invention is applicable to the rough, fine desulfurization in the production processes of synthetic ammonia, methanol, combined methanol, low-carbon alcohol, synthetic fuel methanation and so on, and is also applicable to the removal of hydrogen sulphide by using various gas sources like semi-water gas, water gas, town gas, coke oven gas, natural gas, liquefied gas, chemical raw gas, marsh gas, carbon dioxide and so on, and using various reactors like fixed bed, moving bed and so on.

Description

technical field [0001] The invention relates to an industrial raw material gas purification agent, in particular to a desulfurization agent and its preparation method and application. Background technique [0002] At present, there are mainly two methods for removing hydrogen sulfide from industrial raw gas: dry method and wet method. The former is simpler in process, more convenient to operate and lower in cost than the latter. Dry desulfurization methods are divided into medium temperature desulfurization, low temperature desulfurization and normal temperature desulfurization. Low-temperature desulfurization and normal temperature desulfurization are the current development directions, especially desulfurization at normal temperature—such as iron oxide (Ren Ailing, Ruan Yilun, Guo Bin, etc., Environmental Engineering, 2000; 18(4):40-43), activated carbon, molecular sieve desulfurization and other methods It is even more valued. Activated carbon and molecular sieve desulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48C10G29/16C10K1/20
Inventor 曾轲周渝生肖九高张友平李又福陈光祥
Owner BAOSHAN IRON & STEEL CO LTD
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