Desulfurization wastewater treatment device and flue gas treatment system
A desulfurization wastewater and treatment device technology, applied in the direction of gaseous effluent wastewater treatment, water/sewage treatment, water treatment parameter control, etc., can solve the upper limit of water treatment, the influence of flue equipment in power plants, and restrict the zero discharge process economy of desulfurization wastewater Efficient operation, promotion and application, etc., to achieve the effect of large investment, high operating cost, and increased investment capital
Inactive Publication Date: 2017-11-24
大唐(北京)水务工程技术有限公司 +1
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Problems solved by technology
The overall cost of the bypass flue atomization technology is low, but there is a potential impact on the equipment of various parts of the flue of the power plant, and the upper limit of the treated water is limited
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] The purpose of the present invention is to provide a desulfurization wastewater treatment device to solve the problems of the above-mentioned prior art, make full use of the waste heat of the flue, perform gas-liquid heat exchange, and further fully reduce the energy consumption and operating cost of the evaporative crystallizer. The invention also provides a flue gas treatment system, which avoids the adverse effects caused by the evaporation of waste w...
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The invention discloses a desulfurization wastewater treatment device, comprising a pretreatment module, a membrane concentration reduction module and an evaporation crystallization module which are sequentially connected, wherein a reaction sedimentation tank of the pretreatment module is communicated with a desulfurization wastewater pipe of desulfurization equipment; the membrane concentration reduction module internally provided with a microstrainer is connected with an evaporator of the evaporation crystallization module through a pipeline; and the pipeline is connected with a gas-liquid heat exchanger arranged on a smoke pipe located between a deduster and the desulfurization equipment. The desulfurization wastewater treatment device of the invention partially utilizes the waste heat of a flue, and when to-be-cured waste water preheated by the flue is subjected to evaporation, required energy is substantially reduced, so energy consumption of an evaporation crystallizer is lowered; and desulfurization wastewater and flue gas in the flue only undergo heat transfer and have no material exchange, so a series of potential problems caused by entry of evaporation products into the flue are avoided.
Description
technical field [0001] The invention relates to the technical field of industrial waste gas treatment, in particular to a desulfurization wastewater treatment device and a flue gas treatment system. Background technique [0002] At present, in my country's coal-fired power plants, wet desulfurization technology is mostly used in environmental protection projects to deal with sulfur oxides in flue gas. During the operation of this technology to treat flue gas, it is necessary to discharge wastewater from time to time to ensure its stable operation and the purity and quality of the by-product gypsum. The wastewater is desulfurization wastewater, which has the following characteristics: high hardness, high salinity, complex components, containing a large amount of heavy metals and suspended solids, and the water quality fluctuates significantly. Impact. According to the data released by the Ministry of Environmental Protection, the total installed capacity of thermal power in...
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IPC IPC(8): C02F9/10C02F103/18
CPCC02F9/00C02F1/04C02F1/041C02F1/043C02F1/16C02F1/44C02F1/441C02F1/444C02F2103/18C02F2209/005
Inventor 刘宁赵飞张鹏远齐勇张净瑞杨言王安其
Owner 大唐(北京)水务工程技术有限公司