A high-concentration brine low-temperature evaporation device
A low-temperature evaporation, concentrated brine technology, applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as corrosion, human health and environmental threats, high COD, etc.
Active Publication Date: 2021-07-06
NANJING UNIV +1
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Problems solved by technology
A considerable part of chemical hazardous waste has the characteristics of acute toxicity, reactivity, and corrosion, especially the high content of toxic substances in hazardous waste, which will pose a great threat to human health and the environment. Great impact on human body and environment
(3) Great potential for waste recycling
However, when incineration technology treats such hazardous wastes, there are the following problems: (1) In the state of high-temperature melting, the fouling of the rotary kiln is serious, and the thermal efficiency is significantly reduced; (2) The corrosion of the equipment is very serious; (3) Most of them contain Chlorine salts will produce a large amount of dioxins during incineration, causing secondary pollution; (4) Most of these hazardous wastes exist in a wet state, resulting in high energy consumption in the incineration method
When safely landfilling such hazardous waste, there are the following problems: (1) a rigid landfill is required, and the project cost is high; (2) it occupies a large area of land; (3) a large amount of high-COD and high-salt leachate will be produced which cannot deal with
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[0020] Example: such as figure 1 , 2 A high-concentration brine low-temperature evaporation device shown includes a brine tank 1, a preheating tank 2, an evaporating tank 3, a primary evaporating device 4, a preheating device 5, and an evaporating device 6; the brine tank 1 is provided with an exhaust port 10 and the water inlet, a partition 11 is provided at the bottom of the brine tank 1, a water hole 110 is provided on the partition 11, a lift pump 12 is provided at the lower end of the brine tank 1; the preheating tank 2 is arranged at the upper end of the brine tank 1, The upper end of the preheating tank 2 is connected to the lower end of the brine tank 1 through a pipeline, and a brine pump 13 is arranged at the joint, and a water diversion device 21 is arranged inside the preheater tank 2, and the water diversion device 21 includes a water diversion motor 210 and a water diversion pan 211 , the water diversion motor 210 is arranged at the inner bottom of the preheatin...
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The invention discloses a high-concentration brine low-temperature evaporation device, which comprises a brine tank, a preheating tank, an evaporating tank, a primary evaporating device, a preheating device, and an evaporating device; the brine tank is provided with an exhaust port and a water inlet; A partition and a lift pump are provided, the preheating tank is set on the upper end of the brine tank, the preheating tank is connected to the brine tank, the evaporation tank is set on the left side of the upper end of the brine tank, the evaporating tank is connected to the preheating tank, and the evaporating tank is provided with an exhaust The primary evaporating device includes a driving motor, a brine dispersing plate and dispersing paddles, the preheating device includes a heater, a heat exchange tube, and the evaporating device includes an evaporating swash plate, a circulation pump and an exhaust fan; the present invention has simple equipment, high processing efficiency, and no Secondary pollution, suitable for large-scale promotion.
Description
technical field [0001] The invention relates to the technical field of high-salt chemical hazardous waste treatment, in particular to a high-concentration brine low-temperature evaporation device. Background technique [0002] Hazardous chemical waste refers to solid, semi-solid or slurry waste produced in the chemical production process, including unqualified products or intermediate products, by-products, spent catalysts, waste catalysts, etc. Waste additives, unreacted raw materials and raw material impurities, etc., also include wastes discharged directly from the reaction device or from corresponding devices during product hanging, separation, and washing, as well as dust discharged from air pollution control facilities, and sewage generated during wastewater treatment. Mud, solid waste generated from equipment maintenance and accidental leakage, etc. [0003] Hazardous chemical waste has the following characteristics: (1) The production volume is relatively large. Ch...
Claims
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IPC IPC(8): C02F1/04
CPCC02F1/04C02F1/043C02F1/048C02F2209/02C02F2301/08
Inventor 吕路王林平徐敬生黄前霖张炜铭潘丙才
Owner NANJING UNIV