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Moving bed smoke desulfur denitrate and dust removal technology

A desulfurization and denitrification, moving bed technology, applied in the field of flue gas purification, can solve the problems of difficult separation of CO gas, no reflection of denitrification and dust removal process, and difficulty of upward moving process, etc., to achieve good effect, improve efficiency and low operating cost Effect

Inactive Publication Date: 2007-02-14
长春惠工净化工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The channel through which the active coke is sent from the first section to the second section is relatively narrow, which is prone to blockage and the resistance of the flue gas is too large; it is difficult to realize the upward movement of the adsorbed active coke when it is sent to the regeneration tower for regeneration; CO Difficult to separate gas from mixed gas
CN1244393C discloses "a method for desulfurization and sulfur recycling of activated coke with moving bed" and "a method for desulfurization and sulfur recycling of circulating fluidized bed active coke" disclosed in CN1204955C, although the beneficial effects of the instructions say that it can denitrify and remove dust , except that there is pre-dust removal before the soot enters the reactor, the denitrification and dust removal process is not reflected in the technical solutions and examples

Method used

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  • Moving bed smoke desulfur denitrate and dust removal technology
  • Moving bed smoke desulfur denitrate and dust removal technology

Examples

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Effect test

example 1

[0030] An industrial side line is built on the main flue of a 600,000-kilowatt thermal power plant boiler in Inner Mongolia. The flue gas flow rate and main indicators of the side line are as follows:

[0031] Flow 10000Nm 3 / h,SO 2 2500mg / Nm 3 , NO x 510mg / Nm 3 , Dust 100mg / Nm 3 , dry basis oxygen 6%, temperature 150 ℃.

[0032] The desulfurization and denitrification reactor 1 is filled with 10 tons of desulfurization, denitrification and dedusting active coke disclosed in CN200610017059.7, and the new active coke hopper 11 is equipped with 5 tons of active coke for mobile replenishment. Start the system, let in the flue gas, the active coke starts to move, and the amount of ammonia injected at the ammonia injection port 6 is based on the flue gas flow and NO x The content is determined to be 5000-7500g / h; the activated coke discharged through the discharge port 5 is sent to the regeneration tower 8 for regeneration, and is heated and regenerated at 500°C for 5-10 hou...

example 2

[0034] An industrial side line is built on the main flue of a 200,000-kilowatt thermal power plant boiler in Northeast China. The flue gas flow rate and main indicators of the side line are as follows:

[0035] Flow 7000Nm 3 / h,SO 2 3800mg / Nm 3 , NO x 500mg / Nm 3 , Dust 100mg / Nm 3 , dry basis oxygen 6%, temperature 180 ℃.

[0036] The desulfurization and denitrification reactor 1 is filled with 8 tons of desulfurization, denitrification and dedusting active coke disclosed in CN200610017059.7, and the new active coke hopper 11 is equipped with 4 tons of active coke for mobile replenishment. Start the system, let in the flue gas, the active coke starts to move, and the amount of ammonia injected at the ammonia injection port 6 is based on the flue gas flow and NO x The content is determined to be 4000-6000g / h; the activated coke discharged through the discharge port 5 is sent to the regeneration tower 8 for regeneration, and is heated and regenerated at 400°C for 10-15 hou...

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Abstract

The present invention relates to fume desulfurizing, denitrating and dedusting process in moving bed. During the reverse contact between fume and active coke, the fume first has its adsorbed SO2 eliminated in the desulfurizing layer and then has its NOx reacted with injected NH3 to produce N2, H2O and other harmful products. The active coke after finishing desulfurization and denitration is regenerated in a regenerator physically through heating to decompose and desorb sulfuric acid and sulfate and chemically through the reaction between the created SO3 and the inner surface of the active coke to produce surface functional group. Experiment shows that the technological scheme of the present invention has the advantages of simple process, high efficiency, low cost, low power consumption, low water consumption and other advantages.

Description

technical field [0001] The invention relates to a flue gas purification method, in particular to a moving bed flue gas desulfurization, denitration and dust removal process. Background technique [0002] At present, there are many technologies for flue gas purification using activated coke and activated carbon, including activated coke desulfurization technology or simultaneous denitrification technology of activated coke desulfurization. Japan's Mitsui Mining Co., Ltd. and Germany's BeigbouForsching have carried out technical cooperation on the process development of flue gas activated coke (AC) desulfurization and denitrification, and developed a flue gas purification process consisting of desulfurization and denitrification process, active coke regeneration process and by-product recovery process; The "resourceable flue gas desulfurization technology" completed by Guizhou Hongfu Industrial Co., Ltd. can remove SO in flue gas 2 Removal, recovery and use for sulfuric acid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/60
CPCY02A50/20
Inventor 陆久民傅方堃何广海
Owner 长春惠工净化工业有限公司
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