CN115806840A - Method for treating organic biochemical sludge containing oil in coal-to-liquid device by using coal water slurry gasification furnace - Google Patents
Method for treating organic biochemical sludge containing oil in coal-to-liquid device by using coal water slurry gasification furnace Download PDFInfo
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- CN115806840A CN115806840A CN202111081655.2A CN202111081655A CN115806840A CN 115806840 A CN115806840 A CN 115806840A CN 202111081655 A CN202111081655 A CN 202111081655A CN 115806840 A CN115806840 A CN 115806840A
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Abstract
The patent discloses a method for treating oily organic biochemical sludge of coal-to-liquid device by a coal-water slurry gasification furnace, which comprises a sludge blending tank, wherein the sludge blending tank is connected to a sludge cutting machine through a bottom pipeline, the sludge cutting machine is connected to a sludge delivery pump through an outlet pipeline, a flushing water pipe is arranged at the branch of the inlet pipeline, an outlet pipeline of the sludge delivery pump is connected to a coal pulverizer, a discharge pipeline of the coal pulverizer is connected to a coal slurry drum screen, a discharge pipeline of the coal slurry drum screen is connected to a coal slurry groove, a stirrer is arranged in the coal slurry groove, the discharge pipeline of the coal slurry drum screen is connected to a high-pressure coal slurry pump, and an outlet pipeline of the high-pressure coal slurry pump is connected to the coal-water slurry gasification furnace. The method solves the problem of harmless treatment of the oil-containing organic biochemical sludge which is not dehydrated in the coal-to-liquid device, reduces the transportation and treatment cost, reduces the economic burden of enterprises, fully utilizes organic components such as carbon, hydrogen and the like contained in the sludge, and eliminates the environmental protection risk possibly generated in the transportation and treatment process.
Description
Technical Field
The patent belongs to the technical field related to treatment of coal-to-liquid byproduct oily organic biochemical sludge in the coal chemical industry, and particularly relates to a method for treating oily organic biochemical sludge of a coal-to-liquid device by a coal-water slurry gasification furnace.
Background
The Fischer-Tropsch synthesis device which is a main device for preparing the oil from the coal can continuously generate reaction water in the production and operation process, and although organic substances in the reaction water are recovered by rectifying equipment, the residual organic wastewater still contains a small amount of organic substances and oil substances such as aldol-keto acid and the like; in addition, the sewage discharged from an oil refining apparatus for producing coal oil also contains oil substances. This results in the biochemical sludge by-produced from the coal-to-liquid wastewater treatment apparatus containing not only microorganisms but also harmful substances such as oils and aldolic acids.
The main mode of traditional biochemical sludge treatment is to carry out concentration and solid-liquid separation on the biochemical sludge, entrust the dehydrated biochemical sludge to a unit with hazardous waste treatment qualification for harmless treatment, so that the treatment cost is overhigh, the economic burden of an enterprise is increased, and organic substances contained in the biochemical sludge cannot be fully utilized. In addition, in the process of transporting and disposing the oily organic biochemical sludge, environmental risks such as vehicle overflow and leakage, artificial dumping and the like exist, and uncontrollable factors are more.
Disclosure of Invention
The purpose of this patent is to provide a method that coal slurry gasifier handles oily organic biochemical mud of coal-to-liquid plant to solve the innocent treatment of coal-to-liquid byproduct oily organic biochemical mud, reduce transportation and processing cost, reduce enterprise's economic burden, organic ingredients such as carbon, hydrogen that make full use of contains in the mud, and eliminate the environmental protection risk that probably takes place in the transportation and the processing.
The technical scheme adopted for realizing the purposes of the patents is as follows: the method for treating the organic biochemical sludge containing oil of the coal-to-liquid device by the coal-water slurry gasification furnace comprises the following treatment flows and equipment facilities: the sludge blending tank is characterized in that a pipeline is arranged at the bottom of the sludge blending tank, organic biochemical sludge which is not dehydrated and contains oil can automatically flow to a sludge cutting machine through the pipeline, an inlet valve and an outlet valve are respectively arranged on an inlet pipeline and an outlet pipeline of the sludge cutting machine, an outlet pipeline of the sludge cutting machine is connected to an inlet of a sludge conveying pump, an inlet valve and an outlet valve are respectively arranged on an inlet pipeline and an outlet pipeline of the sludge conveying pump, a flushing water pipeline and a valve are arranged at the branch of the inlet pipeline, an outlet pipeline of the flushing water pipeline is connected to an inlet of a coal pulverizer, a discharge pipeline of the coal pulverizer is connected to an inlet of a coal slurry drum screen, a discharge pipeline of the coal slurry drum screen is connected to an inlet of a coal slurry tank, a coal slurry tank is internally provided with a coal slurry stirrer, a discharge pipeline of the coal slurry tank is connected to an inlet of a high-pressure coal slurry pump, and an outlet pipeline of the high-pressure coal slurry pump is connected to a coal slurry feeding port of a gasification furnace.
This patent can obtain following beneficial effect: the coal-to-liquid byproduct non-dehydrated organic biochemical sludge is doped to prepare the water-coal-slurry which is used as a raw material of a water-coal-slurry gasification furnace, and high-temperature and high-pressure reaction treatment is carried out in the gasification furnace, so that the harmless treatment of the non-dehydrated oil-containing organic biochemical sludge of the coal-to-liquid byproduct is successfully realized, organic components such as carbon, hydrogen and the like contained in the sludge are fully recycled, and the environmental protection benefit and the economic benefit are remarkable.
The organic biochemical sludge containing oil which is not dehydrated does not need to be dehydrated by a dehydrator, so that the electricity cost of the dehydrator, the chemical cost of the flocculant and the transportation cost of the dehydrated biochemical sludge are saved.
The organic biochemical sludge containing oil which is not dehydrated is used as coal grinding water, so that the using amount of water produced by a coal grinding machine is reduced, and the water cost is saved.
Saves the disposal cost of the oily organic biochemical sludge and eliminates the environmental protection risk of the organic biochemical sludge in the transportation and disposal processes.
Drawings
FIG. 1 is a flow chart of the processing method of this patent.
In the figure: 1. a sludge blending tank; 2. a sludge cutting machine; 3. a sludge delivery pump; 4. a coal mill; 5. a coal slurry drum screen; 6. a coal slurry tank; 7. a high pressure coal slurry pump; 8. a coal water slurry gasification furnace; 9. and (5) flushing the water pipe.
Detailed Description
The method for treating the oily organic biochemical sludge of the coal-to-water slurry gasification furnace comprises a sludge blending tank 1, wherein the oily organic biochemical sludge which is a byproduct of coal-to-liquid production and is not dehydrated is collected and stored in the tank, the sludge blending tank 1 automatically flows the non-dehydrated oily organic biochemical sludge to a sludge cutting machine 2 through a tank bottom pipeline, part of large sludge in the non-dehydrated oily organic biochemical sludge is crushed and cut into fine sludge, the sludge cutting machine 2 is connected to an inlet of a sludge delivery pump 3 through an outlet pipeline, the sludge delivery pump 3 pressurizes the non-dehydrated oily organic biochemical sludge and then delivers the pressurized sludge to an inlet of a coal mill 4 through the outlet pipeline, the coal mill 4 mixes and grinds the non-dehydrated oil-containing organic biochemical sludge and coal and other materials into coal water slurry, an outlet pipeline of the coal water slurry is connected to a coal slurry drum screen 5, the coal slurry drum screen 5 screens large-particle coal out and sends the large-particle coal to an inlet of a coal slurry tank 6, a stirrer is arranged in the coal slurry tank to prevent the coal water slurry from being deposited and separated out, an outlet pipeline of the coal slurry tank 6 is connected to a high-pressure coal slurry pump 7, the coal water slurry pump 7 pressurizes the coal water slurry and then sends the pressurized coal water slurry to a coal water slurry gasification furnace 8 through the outlet pipeline, the temperature and the pressure in the coal water slurry gasification furnace 8 are about 1300 ℃ and 4.0MPa, the coal water slurry and high-pressure oxygen undergo high-temperature high-pressure reaction to produce water gas, and harmful substances such as microorganisms, aldol-ketonic acid and the like in the oil-containing organic biochemical sludge are subjected to harmless treatment.
When the operation is stopped, the sludge cutting machine 2 firstly quits, then the inlet valve of the sludge conveying pump 3 is closed, then the valve of the flushing water pipe 9 at the branch of the inlet pipeline is opened, the non-dehydrated oil-containing organic biochemical sludge is switched into flushing water, the equipment and the pipeline are flushed for 10 minutes in the forward direction, the sludge is prevented from staying and settling for a long time, the equipment and the pipeline are blocked, and the flushing water enters the coal mill 4 to be used as coal grinding water.
After the forward flushing is finished, an inlet valve of the sludge conveying pump 3 is opened, an outlet valve of the sludge conveying pump 3 is closed, the sludge cutting machine 2 and the pipeline are flushed in a reverse direction for 5 minutes, flushing water is discharged into the sludge blending tank 1, and a valve of a flushing water pipe 9 and an inlet valve of the sludge cutting machine 2 are closed after the flushing is finished.
Claims (1)
1. The method for treating the organic biochemical sludge containing oil of the coal-to-liquid device by the coal-water slurry gasification furnace is characterized by comprising the following treatment flows and equipment facilities: mud allocation pool (1), mud allocation pool (1) is connected to mud cutting machine (2) through the bottom pipeline, mud cutting machine (2) is connected to mud delivery pump (3) through the export pipeline, the entrance pipeline branch department of mud delivery pump (3) sets up wash pipe (9) and valve, mud delivery pump (3) export pipe connection is to coal pulverizer (4), the discharge pipeline of coal pulverizer (4) is connected to coal slurry drum sieve (5), the discharge pipeline of coal slurry drum sieve (5) is connected to coal slurry groove (6), set up the agitator in coal slurry groove (6), its discharge pipeline is connected to high-pressure coal slurry pump (7), the export pipeline of high-pressure coal slurry pump (7) is connected to gasifier (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111081655.2A CN115806840A (en) | 2021-09-15 | 2021-09-15 | Method for treating organic biochemical sludge containing oil in coal-to-liquid device by using coal water slurry gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111081655.2A CN115806840A (en) | 2021-09-15 | 2021-09-15 | Method for treating organic biochemical sludge containing oil in coal-to-liquid device by using coal water slurry gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115806840A true CN115806840A (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111081655.2A Pending CN115806840A (en) | 2021-09-15 | 2021-09-15 | Method for treating organic biochemical sludge containing oil in coal-to-liquid device by using coal water slurry gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115806840A (en) |
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2021
- 2021-09-15 CN CN202111081655.2A patent/CN115806840A/en active Pending
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