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Boiler decoking agent

A decoking agent and boiler technology, applied in fuel additives, petroleum industry, solid fuel, etc., can solve the problem of low efficiency of removing coke scale on the boiler wall, achieve the effects of reducing coal efficiency, avoiding loss, and increasing contact area

Active Publication Date: 2018-11-13
北京可林维尔化工有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a boiler decoking agent in view of the low efficiency of the boiler wall coke removal agent

Method used

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preparation example Construction

[0029] The preparation method of composite soot cleaning material comprises the following steps:

[0030] (1) According to the mass ratio of 1:5~8, take zinc powder and 10% acetic acid in mass concentration, and under the protection of nitrogen, wet ball milling at 300~350r / min for 12~15h to obtain ball abrasive, and take flake graphite and pulverize it in a pulverizer , pass through a 120-mesh sieve, take the sieved particles and add concentrated nitric acid according to the mass ratio of 4:1~2, stir in a water bath at 28~35°C at 300~450r / min for 20~35min, filter, take the filter residue and wash it with water until it is washed. After the liquid is neutral, move it to 65~80°C oven and dry to constant weight to obtain the dry matter, take the dried matter in a muffle furnace, and heat-treat at 800~900°C for 4~8min to obtain expanded graphite, and take the expanded graphite according to the mass ratio 4: 1~2: 15~20 Add ball abrasive and 20% ethanol solution to mix, oscillate w...

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Abstract

The invention discloses a boiler decoking agent and belongs to the field of decoking agents. According to the boiler decoking agent, zinc powder and flake graphite are used as raw materials, and concentrated nitric acid is used for carrying out intercalation on the flake graphite and expanding to prepare expanded graphene; ball-milled zinc powder is ultrafine powder and is used as a zinc source; ethanol is used as a dispersant to prepare a composite material with a good structure; in a preparation process, starch is used and pores of starch colloid can be filled with the composite material andis used as a crosslinking agent, and a molecular chain of the starch is crossly linked, so that the surface of the starch with a porous structure is more dense; effective components deposited in thestarch are prevented from losing in preparation and storage processes. By adopting the boiler decoking agent, the problem of a current boiler decoking agent that the efficiency of removing coked fouling of a boiler wall is low is solved.

Description

technical field [0001] The invention belongs to the field of decoking agents, in particular to a boiler decoking agent. Background technique [0002] Boiler decoking agent is processed from inorganic compounds according to a certain ratio, and its appearance is white granular and yellow powder crystal. The surface of the heat exchanger makes the soot on the heating surface of the boiler porous and loose, so that it is easy to pulverize and fall off. Currently, chain furnace slag is commonly used as fuel again, and the slag with high carbon content has caused huge pollution to the environment. The coking and dust accumulation during the operation of the boiler is a major problem in the boiler industry. During the use of the boiler, due to factors such as its specific use environment and the user's use management level, the metal surface of the boiler often corrodes and scales, and the combustion, coal or oil always contains sulfur, moisture and other minerals Impurities. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10C10L10/04
CPCC10L9/10C10L10/04
Inventor 胡丽春陈建春胡晓玉
Owner 北京可林维尔化工有限公司
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