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Desulfurization and denitrification method and treatment device for marine exhaust gas

A waste gas desulfurization and treatment device technology, applied in the direction of combination devices, separation methods, chemical instruments and methods, etc., can solve the problems of cumbersome storage, adverse effects on crew life and health, and achieve the effect of low price

Active Publication Date: 2014-06-18
南亮压力容器技术(上海)有限公司
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Problems solved by technology

[0017] The invention discloses a treatment method and device for desulfurization and denitrification of ship waste gas. Sodium chloride, which is cheap and can be extracted from seawater at any time, is used as a neutralizer for desulfurization and denitrification, thereby fundamentally solving the problem of using ammonia as a neutralizer. Issues such as the need for special boarding permits, cumbersome storage, and adverse effects on the life and health of the crew

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  • Desulfurization and denitrification method and treatment device for marine exhaust gas

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[0061] How to achieve the above objectives will be specifically described below with reference to the accompanying drawings of the present invention.

[0062] figure 1 It is a flow chart of the ship exhaust gas desulfurization and denitrification method of the present invention. Such as figure 1 As shown, the process includes: filtering step S1, removing the dust contained in the exhaust gas discharged from the marine diesel engine; ozone treatment step S2, spraying ozone on the exhaust gas after dust removal; hydrogen peroxide treatment step S3, spraying peroxide on the exhaust gas after ozone treatment Hydrogen; neutralization treatment step S4, spraying a neutralizer to the exhaust gas treated with hydrogen peroxide; and dust removal step S5, removing fine dust contained in the exhaust gas after neutralization treatment.

[0063] In the above-mentioned filtering step S1, particulate matter contained in the exhaust gas, such as solid carbon, solid sulfur, carbon oxides, et...

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Abstract

The invention discloses a desulfurization and denitrification method and a treatment device for marine exhaust gas. Exhaust gas produced by a marine diesel engine is treated with ozone, hydrogen peroxide and a neutralizing agent, and the neutralizing agent is sodium chloride with the characteristics of high desulfurization and denitrification capacities, low price and extraction from seawater at any time. Being different from high-irritation and toxic ammonia neutralizing agents, on-board permission of sodium chloride is not required, so that the problems of inconvenience in using and managing other similar neutralizing agents and adverse effects on the living environment of shipmen can be solved; and on the other hand, a neutral salt with a high added value is produced in a neutralizing treatment process, and is recovered through an exhaust pipe at the bottom of a reaction groove, so that the recovery rate and reutilization ratio of the neutral salt are increased greatly. Regions are partitioned inside the reaction space of a porous plate for distributing air current, so that ozone treatment, hydrogen peroxide treatment and neutralizing agent treatment are performed separately respectively. Exhaust gas treatment can be performed under a uniform distribution condition, so that treatment efficiency is increased.

Description

【Technical field】 [0001] The technical field of the invention belongs to the category of using ozone, hydrogen peroxide and neutralizing agent to treat exhaust gas from marine diesel engines. The specific content of the present invention is: use cheap sodium chloride, which can be extracted from sea water at any time, as a neutralizing agent for desulfurization and denitrification. The neutral salt with high added value produced during the neutralization reaction is recovered through the discharge pipe at the bottom of the reaction tank. The perforated plate distributes the air flow and divides the inner area of ​​the reaction space, so that ozone treatment, hydrogen peroxide treatment and neutralizer treatment can be carried out in independent spaces. 【Background technique】 [0002] Recently, with accelerated industrial development, consumer demand for various chemical fuels such as oil and coal has also increased dramatically. Various harmful gases produced during the co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00B01D53/92B01D53/50B01D53/56
Inventor 朴成进李泰勋
Owner 南亮压力容器技术(上海)有限公司
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