Preparation method of modified active coke for desulfurization and denitrification
A technology for desulfurization, denitrification, and activated coke, applied in separation methods, chemical instruments and methods, and other chemical processes, etc., can solve the problems of high cost of adsorbent preparation and low removal efficiency of common removers, and achieve chemical adsorption sites. The effect of many, appropriate pore size distribution and convenient transmission
Pending Publication Date: 2022-06-24
MAANSHAN IRON & STEEL CO LTD
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[0005] The purpose of the present invention is to provide a low-cost method for preparing modified activated coke for desulfurization and denitrification, which is used to solve the problem of low removal efficiency of common removal agents and the high preparation cost of adsorbents with high removal rates, which is difficult to meet Contains SO 2 and NO X Requirements for deep flue gas treatment
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[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0031] see figure 1 In the embodiment of the present invention, a method for preparing modified activated coke for desulfurization and denitrification is provided, comprising the following steps:
[0032] The first step: active coke pretreatment: the commercial active coke is ground and sieved to obtain active coke powder, wherein the mesh number of the sieve is 50 to 100 mesh; in this example, the mesh number of the sieve is 80 mesh...
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Abstract
The invention discloses a preparation method of modified active coke for desulfurization and denitrification, which comprises the following steps: by using commercial active coke powder as a raw material and KOH as a modifier, modifying the active coke powder by KOH according to a mass ratio of 1: 2, and setting a proper preparation temperature, enabling the specific surface area of the modified active coke to be larger, and regulating and controlling the pore structure of the modified active coke, thereby obtaining the modified active coke for desulfurization and denitrification. According to the present invention, the porous carbon material has the microporous structure and the mesoporous structure, such that the SO2 and the NOX can be easily adsorbed, and the transmission of the SO2 and the NOX is convenient so as to improve the adsorption performance; besides, the specific surface area of the prepared modified activated coke is 175.61-272.65 m < 2 > / g, the total pore volume is 0.13-0.19 cm < 3 > / g, the average pore size is 2.75-5.89 nm, the pore size distribution is 0-7 nm, and the modified activated coke is porous carbon with high nitrogen and oxygen element content, and is high in specific surface area utilization rate, multiple in chemical adsorption sites and good in adsorption performance.
Description
technical field [0001] The invention relates to the technical field of preparation of environmental protection materials, in particular to a preparation method of modified activated coke for desulfurization and denitrification. Background technique [0002] my country is a sulfur-poor country and the largest coal producer and consumer in the world. 2 and NO X The resulting pollution has seriously affected human health and living environment. Flue gas desulfurization and denitrification is the world's current control of acid rain and SO 2 and NO X Effective and main technical means of pollution. The integrated technology of combined desulfurization and denitrification of activated coke can not only remove sulfur dioxide and nitrogen oxides, but also remove soot, mercury, heavy metals, volatile organic compounds and other trace elements in flue gas, and has the advantages of simple process and low cost. It has the advantages of low energy consumption and resource utilizat...
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IPC IPC(8): B01J20/20B01J20/30B01J20/28B01D53/02
CPCB01J20/20B01D53/02B01J20/2808B01J20/28083B01D2257/40B01D2257/302B01D2258/0283
Inventor 钱虎林邓成豪王晓婷余谟鑫曹先中张克群宋前顺方亮青赵然何谋龙
Owner MAANSHAN IRON & STEEL CO LTD