System and method for reducing energy consumption of organic silicon wastewater treatment by using waste heat
A wastewater treatment and organic silicon technology, which is applied in natural water treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of limited efficiency of wastewater treatment, high energy consumption of wastewater treatment, high treatment cost, etc., to achieve Save labor costs and time costs, high recycling efficiency, and low operating costs
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Embodiment 1
[0079] A system for reducing energy consumption of organosilicon wastewater treatment by utilizing waste heat, the operation process of which is as follows:
[0080] 1) The deep-removal waste water, washing tower waste water, alkali washing waste water and hydrogen-containing silicone oil waste water etc. produced in the organic silicon production process are sent into the waste water collection tank 11, and after the waste water collection tank 11 is homogenized with the mixing device 1101 , temporary storage;
[0081] 2) The organic silicon waste water is sent into the waste heat utilization unit from the outlet of the waste water collecting tank 11, enters from the cooling medium inlet of the heat exchanger 21 of a plurality of methyl chloride synthesis sections, and enters from the heat exchanger 21 of a plurality of methyl chloride synthesis sections The cooling medium outlet is discharged;
[0082] 3) The heated organosilicon waste water enters the multi-effect evaporat...
Embodiment 2
[0085] A system for utilizing waste heat to reduce the energy consumption of organosilicon waste water treatment, the difference between its operation process and Example 1 is only:
[0086] 1) The deep-removal waste water, washing tower waste water, alkali washing waste water and hydrogen-containing silicone oil waste water etc. produced in the organic silicon production process are sent into the waste water collection tank 11, and after the waste water collection tank 11 is homogenized with the mixing device 1101 , discharge into the flocculation sedimentation tank 12 through the outlet of the waste water collecting tank 11, add flocculant to the silicone wastewater in the flocculation sedimentation tank 12 from the dosing port of the flocculation sedimentation tank 12 through the dosing device 13, and wait for the silicone wastewater to flocculate. After the sedimentation is completed, the supernatant liquid is sent to the waste heat utilization unit through the discharge po...
Embodiment 3
[0088] The working principle of the de-foaming device and the de-foaming device in the four-effect evaporation device is as follows:
[0089] (1) De-foaming: After the organic silicon wastewater enters the separator from the heater of the four-effect evaporation device 31, gas-liquid separation is carried out in the separator, and the secondary steam carries part of the liquid foam in the separator to move from bottom to upward, and runs to When the defoaming device 3101 is installed at the steam outlet of the separator, it enters the defoaming channel 3115 from the inlet section 1121 of the damping vane 3112, and then collides at the wave-shaped turning section 1123, and during the collision, the larger liquid foam is blocked by the damping vane. 3112 and the wave-shaped protrusions 1124 on it are broken, and then discharged from the outlet section 1122, and then enter the screen plate 3114, the smaller liquid foam is broken and blocked, and the steam smoothly passes through t...
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