Method for treating sump oil of coal tar
A processing method and technology for coal tar, applied in the field of coal chemical industry, can solve the problems of waste of coal tar resources and no treatment, and achieve the effects of low cost, resource saving and low investment
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Embodiment 1
[0013] Taking the treatment of 1000g of coal tar waste oil as an example, the treatment method consists of the following steps:
[0014] (1) Add 1000g of coal tar waste oil to the mixing kettle, which contains 60% of coal tar, 30% of water and 10% of quinoline insoluble matter, and then add 1500g of benzene, 120g of sodium carbonate and 100g of WF- Type 01 demulsifier (produced by Shaanxi Zhongheng Energy Technology Co., Ltd.), the mass ratio of coal tar waste oil to benzene, sodium carbonate, and WF-01 type demulsifier is 1:1.5:0.12:0.1, under normal pressure and 60°C Stir for 38 minutes to make it evenly mixed;
[0015] (2) Stand still in the mixing tank for 35 minutes, layering, so that the quinoline insoluble matter in the coal tar waste oil is deposited in the water, discharged from the outlet at the bottom of the mixing tank, and sent to the sewage station for treatment, the upper part of the mixing tank contains coal The mixture of tar, benzene and a small amount of wa...
Embodiment 2
[0017] Taking the treatment of 1000g of coal tar waste oil as an example, the treatment method consists of the following steps:
[0018] (1) Add 1000g of coal tar waste oil to the mixing kettle, which contains 60% of coal tar, 30% of water and 10% of quinoline insoluble matter, and then add 1500g of benzene, 200g of sodium carbonate and 200g of WF into the mixing kettle -01 type demulsifier, the mass ratio of coal tar waste oil to benzene, sodium carbonate, WF-01 type demulsifier is 1:1.5:0.2:0.2, stir for 38min under normal pressure and 60°C to make it evenly mixed;
[0019] Step (2) is the same as in Example 1, benzene and water are distilled from the top of the still, and the benzene is recovered for recycling. Coal tar is output from the bottom outlet of the still, recovered, and processed in the next step. The recovery rate of coal tar is 98%.
Embodiment 3
[0021] Taking the treatment of 1000g of coal tar waste oil as an example, the treatment method consists of the following steps:
[0022] (1) Add 1000g of coal tar waste oil into the mixing kettle, which contains 60% of coal tar, 30% of water and 10% of quinoline insoluble matter, and then add 1200g of benzene, 200g of sodium carbonate and 200g of WF into the mixing kettle -01 type demulsifier, the mass ratio of coal tar waste oil to benzene, sodium carbonate, WF-01 type demulsifier is 1:1.2:0.2:0.2, stir for 38min under normal pressure and 60°C to make it evenly mixed;
[0023] Step (2) is the same as in Example 1, benzene and water are distilled from the top of the still, and the benzene is recovered for recycling. Coal tar is output from the bottom outlet of the still, recovered, and processed in the next step. The recovery rate of coal tar was 97.7%.
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