Multi-effect evaporation and concentration system for salt-contained wastewater
A technology for multi-effect evaporation and saline wastewater, which is applied in the direction of multi-effect evaporation, evaporator accessories, water/sewage treatment, etc., can solve the problems of limited concentration times and high energy consumption costs, and achieve reduction of energy consumption costs, energy saving, Energy Saving Effect
Pending Publication Date: 2018-11-23
首航洁能科技有限公司
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Problems solved by technology
Due to the limited concentration ratio of high-pressure membrane reverse osmosis, evaporation is generally used for concentration, but the energy cost of evaporation is high
Method used
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Embodiment 2
[0049] Embodiment two, Figure 6 to Figure 8 As shown, a multi-effect evaporation and concentration system for saline wastewater is different from Embodiment 1 in that the structure of the guide column 70 inserted in the upper part of the inner hole of each heat exchange tube 5 in the evaporator 200 is the same as that of Embodiment 1. The deflector column 70 is different.
[0050] The upper introduction portion 701 of the diversion column 70 in this embodiment is a cylinder with upper, lower, and small steps. The part of the upper cylinder 7011 larger than the lower cylinder 7013 constitutes the shoulder 7010. The lower cylinder 7013 of the upper introduction portion 701 is outside The surface matches the inner surface of the heat exchange tube 5, the constricted portion 703 is a cylinder, and the constricted portion 703 connects with the lower cylinder 7013 of the upper introduction portion 701 to form a stepped cylinder. The outer diameter of the part 703 is smaller than t...
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The invention discloses a multi-effect evaporation and concentration system for salt-contained wastewater. The multi-effect evaporation and concentration system comprises a vapor compressor and a plurality of evaporators, wherein the evaporators are sequentially arranged; each evaporator is provided with a liquid inlet, a liquid outlet, a vapor input port and a gas outlet; the vapor input port ofthe foremost evaporator is communicated with a discharge port of the vapor compressor through a pipeline; the gas outlet in the backmost evaporator is communicated with a suction inlet of the vapor compressor through a pipeline and is communicated with a closed water tank through a condenser; a vacuum pump is communicated with the closed water tank; the suction inlet of the vapor compressor is further communicated with an external vapor pipeline; between every two adjacent evaporators, the liquid outlet in the rear evaporator is communicated with the liquid inlet in the front evaporator through a pipeline, and the gas outlet in the front evaporator is communicated with the vapor input port in the rear evaporator through a pipeline; a material waste water inlet pipe is communicated with theliquid inlet of the backmost evaporator; and the liquid outlet in the foremost evaporator is communicated with the material waste water inlet pipe through a pipeline and bypasses a concentrated wateroutlet pipe. The multi-effect evaporation and concentration system has the advantages that the energy-saving effect is obvious, the energy consumption is low.
Description
technical field [0001] The invention relates to the technical field of manufacturing wastewater concentration treatment equipment, in particular to a multi-effect evaporation concentration system for saline wastewater. Background technique [0002] In industrial production, in order to strengthen industrial water recycling, improve water use efficiency, and prevent industrial pollution, etc., the treatment of saline wastewater is often encountered. There are usually two treatment methods: one is to concentrate, crystallize, and separate the waste water to achieve the purpose of "wastewater reuse" and "near-zero discharge"; , Salt-splitting saline wastewater needs to be stored locally, but after a long time, it will take up a lot of storage space until there is no storage space, which requires the wastewater to be concentrated to minimize storage space. No matter which method is used, the concentrated treatment of wastewater is required to reduce the cost of subsequent cryst...
Claims
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IPC IPC(8): C02F1/04B01D1/26B01D1/30
CPCB01D1/26B01D1/30C02F1/043C02F1/048
Inventor 王丽丽朱霞
Owner 首航洁能科技有限公司