A system and process for preparing powdered activated coke for desulfurization by two-step method in three-stage furnace
A technology of activated coke and powder, which is applied in the field of preparing powdered activated coke for desulfurization by two-step method in three-stage furnace
Active Publication Date: 2021-12-28
SHANDONG UNIV
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Problems solved by technology
[0006] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a system and process for preparing powdered activated coke for desulfurization by a two-step method in a three-stage furnace. Compared with the one-step method, powder coke production and adsorption performance are greatly improved when the combustion section consumes the same amount of fuel.
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Embodiment 1
[0045] A system for preparing powdered activated coke for desulfurization by a two-step method in a three-stage furnace, such as figure 1 As shown, it includes three core devices: (high temperature section) combustion furnace 3, (medium temperature section) activation furnace 8 and (low temperature section) carbonization furnace 12.
[0046] The high-temperature section combustion furnace 3 belongs to the existing common system, which is in the form of a vertical pulverized coal combustion boiler, mainly including a burner, a furnace body, and the like. Among them, the combustion adopts the liquid slag discharge combustion method, so that the ash of pulverized coal combustion is discharged from the ash hopper 4 in liquid form, so as to prevent it from entering the middle and low temperature section and being mixed into the preparation of powder coke and carbonized semi-coke, which will affect the quality of the final product.
[0047] The activation furnace 8 in the middle tem...
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Abstract
The invention discloses a system and process for preparing powdered activated coke for desulfurization by a two-step method in a three-stage furnace, including a combustion furnace, a carbonization furnace, an activation furnace, and a powder coke cyclone separator; the combustion furnace and the activation furnace are vertically arranged, The combustion pulverized coal inlet of the combustion furnace is arranged at the top, the flue gas outlet of the combustion furnace is arranged at the bottom, the gas phase inlet of the activation furnace is arranged at the bottom, the carbonization semi-coke inlet of the activation furnace is arranged at the lower side wall, and the outlet of the activation furnace is arranged at the upper part. The gas phase inlet of the activation furnace is provided with steam conditioning nozzles and / or air conditioning nozzles; the flue gas outlet of the combustion furnace is connected to the gas phase inlet of the activation furnace, and the outlet of the activation furnace is connected to the inlet of the powder coke cyclone separator, and the powder coke cyclone separator The gas phase outlet of the carbonization furnace is connected to the gas phase inlet of the carbonization furnace, the solid phase outlet of the carbonization furnace is connected to the carbonized semi-coke inlet of the activation furnace, and the solid phase inlet of the carbonization furnace is connected to the coking coal powder source. The invention makes full use of the waste heat of medium and high temperature grades, and at the same time, the powder coke output and adsorption performance are greatly improved.
Description
technical field [0001] The invention relates to a system and process for preparing powdered active coke for desulfurization by a two-step method in a three-stage furnace. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Coal is the main energy consumption in my country, about 70% of coal consumption is directly used for combustion, and coal combustion will inevitably emit SO 2 At present, the most widely used flue gas desulfurization technology is calcium-based wet desulfurization technology, but it consumes a lot of water, which leads to excessive exploitation of limestone resources and increases CO 2 Disadvantages such as excessive desulfurization gypsum and secondary p...
Claims
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IPC IPC(8): C01B32/39
CPCC01B32/39Y02P20/129
Inventor 马春元周滨选王涛付加鹏赵媛
Owner SHANDONG UNIV