An activated coke adsorption tower and a method for activated coke adsorption and purification of flue gas

A technology of activated coke and adsorption tower, which is applied in the field of activated coke adsorption tower and activated coke adsorption and purification of flue gas, which can solve the problems of ammonia secondary pollution and low ammonia adsorption capacity of activated coke, and achieve the effect of avoiding secondary pollution

Active Publication Date: 2021-07-23
SINOPEC ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the current production and operation experience, due to the low adsorption capacity of activated coke for ammonia, the amount of ammonia escaped from the flue gas outlet of the adsorption tower reaches 10-30mg / Nm 3 , causing secondary pollution of ammonia

Method used

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  • An activated coke adsorption tower and a method for activated coke adsorption and purification of flue gas
  • An activated coke adsorption tower and a method for activated coke adsorption and purification of flue gas
  • An activated coke adsorption tower and a method for activated coke adsorption and purification of flue gas

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Embodiment

[0066] This example is used to illustrate the method for purifying flue gas by activated coke adsorption of the present disclosure.

[0067] Such as figure 2 As shown, the adsorption tower adopts a three-stage cross-flow adsorption structure, and the flue gas 1 to be purified in the comparative example is used. From the upstream device, it first enters the inlet gas buffer A4 of the adsorption tower A, and then passes through the first-stage cross-flow adsorption bed A1 , cross-flow contact with activated coke to remove most of the SO in the flue gas 2 . The flue gas from the first-stage cross-flow adsorption bed A1 enters the first inter-stage gas buffer zone A5, where it is evenly mixed with the denitrification ammonia injection 5, and then enters the second-stage cross-flow adsorption bed A2, where it is mixed with the active coke cross-flow contact to remove the remaining SO 2 and NO X . The flue gas from the second-stage cross-flow adsorption bed layer A2 enters the...

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Abstract

The disclosure relates to an activated coke adsorption tower and a method for activated coke adsorption and purification of flue gas. The activated coke adsorption tower of the present disclosure sets the active coke adsorption zone and the gas buffer zone and makes the flue gas enter the upper gas buffer zone first, so that the flue gas is adsorbed by cross-flow contact with the active coke in the upper part of the active coke adsorption zone and is absorbed in the tower. Horizontal baffle flow to pass through the active coke adsorption area multiple times to form multi-stage adsorption, and then the flue gas adsorbed in the upper part is sent to the lower part of the active coke adsorption area through the gas pipeline, and the adsorbed flue gas flowing down from the upper part of the adsorption area Active coke cross-flow contact of sulfur oxides, the pores of the lower active coke store the converted H in the desulfurization process 2 SO 4 , containing H 2 SO 4 Activated coke has a high reactivity to ammonia and can fully capture excess ammonia in the flue gas, thereby effectively controlling the escape of ammonia in the clean flue gas and avoiding secondary pollution of ammonia.

Description

technical field [0001] The present disclosure relates to the technical field of activated coke dry flue gas desulfurization, in particular to an activated coke adsorption tower and a method for activated coke adsorption and purification of flue gas. Background technique [0002] The activated coke dry flue gas purification process began to be applied industrially in the 1980s. With the increasing environmental protection requirements, the activated coke dry flue gas purification process has outstanding advantages such as high desulfurization efficiency, simultaneous removal of multiple pollutants, no water consumption for reaction, no waste water and waste residue discharge, and no corrosion problems for system equipment. More and more attention has been paid to it, and the application of this process is becoming more and more extensive. [0003] Activated coke has the functions of desulfurization, denitrification, dust removal and simultaneous removal of various pollutants...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/04B01D53/58B01D53/82B01D53/86B01D53/56
CPCB01D53/04B01D53/58B01D53/82B01D53/8625B01D2253/102B01D2257/302B01D2258/0283
Inventor 郝少博李浩周桂娟黄孟旗李出和
Owner SINOPEC ENG
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