Gas cooling, desulfurization and pregnant solution regeneration integrated device and process

Abstract

The invention discloses gas cooling, desulfurization and rich liquid regeneration integrated device and process, wherein the device comprises an efficient washing cooler, a desulfurization tower, a base, a rich liquid pump and the like. The process comprises six process steps of efficient washing cooling, gas-liquid separation, spray cooling, absorption desulfurization, purified gas defoaming andrich liquid jet oxidation regeneration. The desulfurization device is additionally provided with the efficient washing cooler, so that by means of the special structure of the efficient washing cooler, high-temperature and high-dust-content sulfur-containing raw material gas can be efficiently cooled and dedusted, cooling and dedusting equipment does not need to be additionally arranged, and investment is saved. The rich solution oxidation regeneration tank section is integrally arranged on the desulfurizing tower, so that a barren solution pump does not need to be arranged, and the cost is effectively reduced. The rich liquor jet oxidation regeneration tank section is integrated on the desulfurization tower, the rich liquor jet oxidation regeneration tank is integrated on the top of the desulfurization tower, and barren liquor obtained by regeneration directly enters the absorption desulfurization section by using the high potential difference of the regeneration tank section, so thata barren liquor pump does not need to be arranged, and the desulfurization tower has the advantages of high desulfurization liquid sulfur capacity and high desulfurization efficiency.

Description

technical field [0001] The invention belongs to the technical field of wet desulfurization, and in particular relates to an integrated device and process for gas cooling, desulfurization and rich liquid regeneration. Background technique [0002] Coal classification and quality utilization is one of the ways of coal deep processing, and coal pyrolysis is the leader of coal classification and quality utilization. Coal pyrolysis, also known as coal dry distillation or thermal decomposition, refers to the process of heating coal under the condition of isolation of air, evaporating the tar and gas in the coal, and obtaining tar, gas, and semi-coke (semi-coke). The produced coal tar, semi-coke and gas can be further processed into fuel oil and high-end chemicals to achieve quality-based utilization. [0003] Coal can be divided into low-sulfur coal (<1.0wt%), medium-sulfur coal (1.0-2.0wt%), medium-high-sulfur coal (2.0-3.0wt%) and high-sulfur coal (>3.0wt%) according to t...

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Problems solved by technology

[0006] Aiming at the existing wet desulfurization devices (including ammonia water method, sodium carbonate lye method, etc.), which have the problems of large equipment investment, poor adaptability to complex gas source working conditions, high operating costs, and large floor area, the present invention provides An integrated device and process for gas cooling, desulfurization and regeneration, the present invention is realized by the following means:

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