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Powder activated coke adsorption desulfurization device and method for adsorbing and desulfurizing flue gas by utilizing powder activated coke adsorption desulfurization device

A technology of adsorption desulfurization and desulfurization equipment, which is applied in the field of flue gas desulfurization, and can solve the problems of low adsorption efficiency and high processing cost

Pending Publication Date: 2018-11-02
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a powdered activated coke adsorption desulfurization device and a method for using it to adsorb and desulfurize flue gas, so as to solve the problems of high processing cost and low adsorption efficiency of the existing activated coke flue gas desulfurization process

Method used

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  • Powder activated coke adsorption desulfurization device and method for adsorbing and desulfurizing flue gas by utilizing powder activated coke adsorption desulfurization device
  • Powder activated coke adsorption desulfurization device and method for adsorbing and desulfurizing flue gas by utilizing powder activated coke adsorption desulfurization device

Examples

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Embodiment 1

[0070] use figure 1 with 2 The shown powder activated coke adsorption desulfurization device performs adsorption desulfurization treatment on sulfur-containing flue gas, in which the diffusion angle of the fluidized bed desulfurization device 20 is 60°C, the length of the reduced diameter section 24 is 2m, and the particle size of the powdery active coke is 100 μm .

[0071] The treatment process is as follows: the above-mentioned sulfur-containing flue gas is passed into the fluidized bed desulfurization device 20 for adsorption and desulfurization to obtain desulfurized flue gas. The flow velocity of the section 24 is 50m / s, the flow velocity of the straight section 22 is 4.5m / s, and the residence time of the flue gas in the fluidized bed desulfurization device 20 is 6s.

[0072] After treatment, the desulfurization rate of sulfur-containing flue gas is 99.3%.

Embodiment 2

[0074] The difference from Example 1 is that during the desulfurization process, the temperature in the fluidized bed desulfurization device is 80° C., and the bed pressure of activated coke is 2500 Pa. The desulfurization rate of sulfur-containing flue gas is 98.9%.

Embodiment 3

[0076] The difference from Example 1 is that during the desulfurization process, the temperature in the fluidized bed desulfurization device is 105° C., and the bed pressure of activated coke is 1200 Pa. The desulfurization rate of sulfur-containing flue gas is 97.8%.

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Abstract

The invention provides a powder activated coke adsorption desulfurization device and a method for adsorbing and desulfurizing flue gas by utilizing powder activated coke adsorption desulfurization device. The powder activated coke adsorption desulfurization device comprises a fluidized bed desulfurization device, the fluidized bed desulfurization device is provided with a flue gas inlet, a powderactivated coke inlet and a desulfurized gas outlet, and the powder activated coke inlet is used for adding powder activated coke. Compared with the existing adsorption treatment of flue gas by using granular activated coke, the powder activated coke adsorption desulfurization device provided by the application uses a finer powder activated coke as an adsorbent and a fluidized bed desulfurization device as a desulfurization device, which is beneficial to greatly improve the utilization efficiency of the adsorbent and the removal efficiency of the SO2, and reduces the number of devices, the floor space, and the investment and operating costs.

Description

technical field [0001] The invention relates to the field of flue gas desulfurization, in particular to a powdered activated coke adsorption desulfurization device and a method for using the device to adsorb and desulfurize flue gas. Background technique [0002] Taking coal-fired boilers as an example, coal-fired boilers generally use flue gas desulfurization devices at this stage, of which limestone-gypsum wet method accounts for more than 90%. The limestone-gypsum wet method has the advantages of high desulfurization efficiency and low cost of desulfurizer, and is the most important solution for SO in my country. 2 Emission reduction has made a huge contribution, but with its large-scale application, it has gradually exposed some problems: 1) Large water consumption and large wastewater discharge, which is not good for power plants in water-scarce areas, and the disposal of desulfurization wastewater also become a problem. 2) The preparation of calcium-based desulfurize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/12
CPCB01D53/12B01D2253/102B01D2257/302
Inventor 马鸿良杨超玉赵剑张广军马丽群王虎杨春振徐广才陈强
Owner CHNA ENERGY INVESTMENT CORP LTD
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