A slag water overtemperature treatment system and control method
A technology of a treatment system and a control method, which is applied in the field of slag water over-temperature treatment system and control, can solve the problems of easy scaling, water consumption, poor heat exchange effect, etc., and achieve the effects of reducing operating costs, simplifying the system, and saving initial investment.
Active Publication Date: 2017-05-31
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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Problems solved by technology
[0005] The purpose of the present invention is to provide a slag water over-temperature treatment system and control method in view of the problems existing in the prior art, so as to solve the problems of poor heat exchange effect or easy scaling or large water consumption in the existing slag removal machine heat exchange system
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[0028] The present invention provides a slag water over-temperature treatment system. In order to introduce the system in detail, the slag water heat balance calculation model based on the system is introduced first. The device of the scraper slag extractor is arranged at zero meters of the boiler room (close to the ground surface). Because there are many facilities in this area, the heat transfer between it and the outside world is very complicated, and most of them cannot be calculated. However, in order to obtain the heat balance model of the scraper scraper, we must make bold assumptions. It is assumed that the body of the slag extractor only transfers heat with main factors such as the furnace, ambient air, and water body, and other complex factors are ignored. In fact, this assumption is also valid, because from the perspective of engineering application, the order of magnitude of heat transfer between other factors and the body of the slag extractor is very low and can ...
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The invention provides a slag water overtemperature disposal system and a control method. The system comprises a slag conveyor, a water inlet mother pipe, a water level water replenishment valve, a water chilling unit, a changeover valve, draining pumps and an overflow pool, after being connected with the water level water replenishment valve, the water inlet mother pipe replenishes cooling water to the slag conveyor, the changeover valve is arranged on the water inlet mother pipe, a water outlet valve of the water chilling unit is connected to the position between the changeover valve and the water level water replenishment valve, a water inlet valve of the water chilling unit is connected to the other end of the changeover valve, the slag conveyor is provided with an overflow pipe used for guiding overflow water into the overflow pool, the draining pumps are arranged in the overflow pool, each draining pump is provided with two water outlets, one water outlet of each draining pump is used for sending overflow water back to the slag conveyor, and the other water outlet of each draining pump is used for draining away overflow water. The slag water overtemperature disposal system has the greatest advantage that forced cooling is conducted on replenished water of the slag conveyor in advance, the embarrassment that high temperature slag water is difficult to dispose is avoided, the temperature is convenient to adjust and lower, and on the premise that normal operation of the slag system is guaranteed, energy and water can be saved to the greatest extent.
Description
technical field [0001] The invention relates to the field of slag removal in power plants, in particular to a slag water overtemperature treatment system and a control method. Background technique [0002] The wet slag removal scheme of the slag bin on the slag machine has been widely used in the power industry. The traditional wet slag removal solution is equipped with a complete set of slag water treatment system, including thickeners, sludge pumps and other equipment, which can clarify and separate slag water. After recycling, during this process, the high-temperature slag water and the environment along the way undergo natural heat exchange, and the slag water after treatment has been cooled to close to the ambient temperature. [0003] With the development of technology, the traditional wet slag removal scheme has been optimized in the industry, and the self-balancing system of the slag machine has been adopted. Under normal circumstances, the water replenishment and wa...
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IPC IPC(8): F23J1/00
Inventor 赵滢许华贺清辉蔡军秦学党楠王仕能付焕兴
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP