Novel wet-type deslagging system

Abstract

The invention discloses a novel wet slag removal system. The novel wet slag removal system comprises a slag well arranged below a boiler and a scraper slag conveyor arranged below the slag well, wherein a horizontal section and an inclined lifting section which is connected with the horizontal section and obliquely arranged at a certain angle in the conveying direction are sequentially arranged onthe scraper slag conveyor, a second-stage scraper conveyor for conveying coal slag into a slag bin is arranged behind the scraper slag conveyor and comprises a horizontal conveying section and an oblique lifting conveying section which is connected with the horizontal conveying section and obliquely arranged at a certain angle, and the oblique lifting section of the scraper slag conveyor is connected with the horizontal conveying section of the second-stage scraper conveyor. According to the novel wet slag removal system, the coal slag is conveyed into the slag bin in a two-stage transport mode by adopting the scraper slag conveyor and a two-stage conveyor, the length of the scraper slag conveyor can be effectively reduced, the rising angle is reduced, a chain is shortened, the number ofscrapers is reduced, the bearing load and the driving torque of wheel trains are correspondingly reduced (namely large-load long-time use is avoided), and chain abrasion caused by the large slag amount can be avoided.

Description

technical field [0001] The invention relates to a new type of wet slag removal system, which is used in thermal power plants with poor coal quality (serious coking and large amount of slag), severe slag removal machine chain wear, and low comprehensive utilization value of dry slag in the area where the power plant is located. Occasions where desulfurization wastewater cannot be effectively treated. Background technique [0002] Taking a thermal power plant as an example, the safe and stable operation of the wet scraper slag extractor is an important aspect related to the overall stable operation of the boiler. In addition, zero discharge of desulfurization wastewater in power plants is an inevitable requirement for power environmental protection. [0003] In the inherent concept of designers, the less equipment, the fewer failure points, and the smaller the amount of maintenance. Therefore, the layout of the slag scraper in one step is generally considered at the beginning ...

AI Technical Summary

Problems solved by technology

Once a problem occurs, it is too complicated to repair or overhaul

[0004] In addition, the current conventional zero-discharge solutions for desulfurization wastewater, such as pretreatment + evaporative crystallization, pretreatment + membrane method + evaporative crystallization, etc., generally have the characteristics of high equipment investment, high energy consumption in operation, high cost of chemicals, and long process flow. Crystallization is easy to cause partial blockage of the flue, which increases the risk of unit operation

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