Technological method and device for semi-coke production wastewater resource utilization
A technology for the production of wastewater and process equipment, which is applied in chemical instruments and methods, organic chemistry, and the preparation of organic compounds, etc. It can solve the problems of poor treatment effect of semi-coke wastewater treatment technology, no available resources for recovery of semi-coke wastewater, and difficult biochemical treatment, etc. problems, to achieve the effect of realizing the development of circular economy, promoting cleaner production, and improving biodegradability
A technology for the production of wastewater and process equipment, which is applied in chemical instruments and methods, organic chemistry, and the preparation of organic compounds, etc. It can solve the problems of poor treatment effect of semi-coke wastewater treatment technology, no available resources for recovery of semi-coke wastewater, and difficult biochemical treatment, etc. problems, to achieve the effect of realizing the development of circular economy, promoting cleaner production, and improving biodegradability
CN104445815AActive Publication Date: 2015-03-25陕西华祥能源科技集团有限公司
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0020] see figure 1 , the device of the present invention comprises the grease trap 1 that communicates with the semi-coke waste water, the outlet of the grease trap 1 is connected with the coarse filter 2, and the outlet of the coarse filter 2 is sequentially separated from 1# precision filter 3 and 1# oil-water Device 4, 2# precision filter 5, 2# oil-water separator 6 are connected, the outlet of 2# oil-water separator 6 is connected with the extraction tower 7 with the extractant inlet through the pipeline, and the 2# oil-water separator 6 discharges The waste water enters the extraction tower 7 for extraction and dephenolation, and the extraction phase overflows from the top of the extraction tower 7 into the stripping tower 8 and contacts with the sodium hydroxide solution countercurrently for stripping. The bottom of the stripping tower 8 is connected w...
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The invention discloses a technological method and device for semi-coke production wastewater resource utilization. The technological method comprises three steps, namely deep oil-water separation, high-efficiency complexing extraction dephenolization and ammonia stilling, to be specific, firstly, separating and recycling a part of coal tar from wastewater when the wastewater passes through an oil partitioning tank, recycling coal tar in a precision filter and an oil-water separator in sequence after discharged water passes through a coarse filter; feeding the oil-removed semi-coke wastewater and an extraction agent into an extraction tower for extraction and dephenolization, feeding the extract phase and a sodium hydroxide solution into a reverse extraction tower for countercurrent contact reverse extraction, feeding an obtained sodium phenolate solution into an acidification kettle, and adding sulfuric acid for acidification to obtain crude phenol; feeding dephenolized wastewater discharged from the bottom of the extraction tower into a wastewater heater, feeding into an ammonia cyanogen separator to be mixed with hot air from an air heater to remove ammonia after being heated by fume from the air heater, and feeding an ammonia-containing mixed gas discharged from the top of the ammonia-cyanogen separator into an ammonia water cooler for cooling to obtain ammonia water. By adopting the method and the device, precious resources such as coal tar, phenol and ammonia can be recycled from the semi-coke production wastewater resource, and the biodegradability of the semi-coke wastewater is improved.
Description
technical field [0001] The invention relates to a coal chemical wastewater treatment device and method, in particular to a process method and device for resource utilization of semi-coke production wastewater. Background technique [0002] my country's energy structure is poor in oil, less in gas, and more in coal. In order to solve the contradiction between my country's resource structure and economic development and reduce dependence on crude oil, in recent years, the coal chemical industry has been actively developed in major coal-producing areas in my country, such as coal-based Oil projects, etc., are of great significance. Coal chemical industry has greatly improved the comprehensive utilization value of coal, but the wastewater produced in the production process of coal chemical industry has complex components and is difficult to treat. Therefore, the use of reasonable wastewater treatment technology is the guarantee for the coal chemical industry to embark on a benig...
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Patent Timeline
25 Mar 2015
Publication
CN104445815A
- IPC
- C02F9/14; C01C1/02; C07C37/70
- Inventors
- 毛少祥; 毕可军