CN113355120B - Tar water control method - Google Patents
Tar water control method Download PDFInfo
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- CN113355120B CN113355120B CN202110766484.0A CN202110766484A CN113355120B CN 113355120 B CN113355120 B CN 113355120B CN 202110766484 A CN202110766484 A CN 202110766484A CN 113355120 B CN113355120 B CN 113355120B
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- storage tank
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/02—Removal of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention belongs to the technical field of tar, and discloses a moisture control method of tar.A moisture control method of the tar is used for controlling the moisture content of the tar stored in an oil depot, so that a second storage tank and a third storage tank can be used for alternately carrying out oil receiving, standing, water discharging, loading and tank transferring operations, and a first storage tank is used for receiving part of the tar in the second storage tank and the third storage tank and carrying out heating, water discharging and loading operations on the tar; the tar produced by the tar moisture control method can ensure that the moisture content is less than or equal to 4 percent so as to ensure the quality of the tar and meet the requirements of customers; the method for controlling the moisture of the tar is simple and feasible and is convenient to operate.
Description
Technical Field
The invention relates to the technical field of tar, in particular to a moisture control method of tar.
Background
The coke oven gas purification process uses hot ammonia water with the temperature of about 80 ℃ to spray and cool raw coke oven gas, the sprayed ammonia water and tar, coal dust and other components in the gas form tar ammonia water condensate, and the condensate enters a mechanized tar ammonia water clarifying tank along a pipeline for separation; and (4) conveying the separated tar to a tar storage tank of the oil depot for storage, and then loading the tar to a vehicle for sale. The quality requirement of the external sale of tar requires that the moisture content is less than or equal to 4 percent.
However, the moisture content of the tar after separation in the tar ammonia water clarifying tank is about 3% -8%, and after the tar is conveyed to the tar storage tank to stand, layering with the moisture content of 2% -80% can occur in the tar storage tank, and if the moisture of the tar storage tank is not controlled, the tar with excessive moisture can be easily sold outside the vehicle.
Therefore, it is necessary to design a tar moisture control method to control the moisture of the tar in the tar storage tank.
Disclosure of Invention
The invention aims to provide a tar moisture control method for controlling the moisture of tar in a tar storage tank.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a moisture control method of tar, which is used for controlling the moisture content of the tar stored in an oil depot, wherein the oil depot comprises a first storage tank, a second storage tank and a third storage tank, and the control method comprises the following steps:
s1, using the first storage tank of the oil depot to collect oil, and replacing the second storage tank to collect oil when the liquid level of the first storage tank reaches 7.8-8.2 m;
s2, standing the tar in the first storage tank, confirming the distribution condition of an oil layer in the first storage tank after standing, and discharging the clean water and the light emulsified oil in the first storage tank out of the first storage tank;
s3, loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 m;
s4, when the liquid level of the second storage tank reaches 7.8-8.2 m, the third storage tank is changed to receive oil;
s5, standing the tar in the second storage tank, confirming the distribution condition of an oil layer in the second storage tank after standing, and discharging clear water and light emulsified oil in the second storage tank;
s6, loading the dehydrated tar in the second storage tank, and stopping loading when the liquid level in the second storage tank is reduced to 3.5 m;
s7, pumping all tar in the second storage tank to the first storage tank through a pump;
s8, when the tar liquid level in the first storage tank reaches 7 m, heating the tar in the first storage tank so as to separate the tar from the water;
s9, standing tar in the first storage tank after heating, and discharging clear water and light emulsified oil in the first storage tank after standing;
s10, loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 m;
s11, when the liquid level of the third storage tank reaches 7.8-8.2 m, the second storage tank is replaced to receive oil;
s12, standing the tar in the third storage tank, discharging clean water and light emulsified oil in the third storage tank after standing, loading the dehydrated tar in the third storage tank, and stopping loading when the liquid level in the third storage tank is reduced to 3.5 m;
s13, pumping all tar in the third storage tank to the first storage tank.
Preferably, when step S13 is completed, steps S8-S10 are performed again.
Preferably, the tar has a standing time of three days.
Preferably, in step S8, the tar in the first tank is heated by steam.
Preferably, in step S8, the heating is stopped when the temperature of the tar in the first tank is raised to 100 to 110 ℃.
Preferably, in step S10, loading is performed when the temperature of the tar in the first storage tank is lower than 80 ℃.
Preferably, the side walls of the first, second and third storage tanks are provided with five water discharge openings, and the five water discharge openings are arranged at intervals in the vertical direction.
Preferably, the interval of the five water outlets is 0.5 m.
Preferably, the heights of the five water discharge openings are 8.0 m, 7.5m, 7.0m, 6.5m and 6.0m respectively.
Preferably, the tar storage capacity of each of the first storage tank, the second storage tank and the third storage tank is 840 tons.
The invention has the beneficial effects that:
the invention provides a tar moisture control method for controlling the moisture content of tar stored in an oil depot, wherein the oil depot comprises a first storage tank, a second storage tank and a third storage tank, the moisture content of the tar stored in the oil depot is controlled by using the tar moisture control method, the second storage tank and the third storage tank can be used for alternately carrying out oil receiving, standing, water discharging, car loading and rotary tank operation, the first storage tank is used for receiving part of the tar in the second storage tank and the third storage tank, and carrying out heating, water discharging and car loading operation on the tar; the tar produced by the tar moisture control method can ensure that the moisture content is less than or equal to 4 percent so as to ensure the quality of the tar and meet the requirements of customers; the method for controlling the moisture of the tar is simple and feasible and is convenient to operate.
Detailed Description
The present invention will be described in further detail with reference to examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
This example provides a method for controlling moisture content of tar, which is used to control the moisture content of tar stored in an oil depot.
Specifically, the oil depot comprises a first storage tank, a second storage tank and a third storage tank, wherein the diameters of the first storage tank, the second storage tank and the third storage tank are all 10.5 meters, the heights of the first storage tank, the second storage tank and the third storage tank are all 9.725 meters, and the tar storage capacity of the first storage tank, the second storage tank and the third storage tank is 840 tons; the side walls of the first storage tank, the second storage tank and the third storage tank are provided with five water outlets, the five water outlets are arranged at intervals along the vertical direction, and the intervals are all 0.5 m.
Preferably, the heights of the five drainage openings are 8.0 meters, 7.5 meters, 7.0 meters, 6.5 meters and 6.0 meters, respectively.
Specifically, the moisture control method of tar comprises the following steps:
s1, the first storage tank of the oil depot is used for receiving oil, and when the liquid level of the first storage tank reaches 7.8-8.2 meters, the second storage tank is replaced for receiving oil.
S2, standing the tar in the first storage tank for three days, after standing, preliminarily separating the moisture in the tar in the first storage tank from the tar to reach the middle upper part of the first storage tank, opening the water outlets on the side surface from top to bottom for observation, and confirming which water outlet can discharge clear water without oil and which water outlet can discharge light emulsified oil so as to confirm the distribution condition of an oil layer in the first storage tank; and then the clean water and the light emulsified oil in the first storage tank are discharged out of the first storage tank by using a water outlet on the side wall, so that the moisture content of the tar in the first storage tank is less than or equal to 4 percent.
S3, loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 m; because the tar and the water in the first storage tank can be layered continuously over time, the moisture content of the charged tar can be higher than 4% when the vehicle is continuously loaded, and the quality of the tar is not qualified.
And S4, when the liquid level of the second storage tank reaches 7.8-8.2 m, the third storage tank is changed to receive oil.
S5, standing the tar in the second storage tank for three days, and similarly, separating the moisture in the tar from the tar after standing, and then confirming the distribution condition of an oil layer in the second storage tank; and then the clean water and the light emulsified oil in the first storage tank are discharged out of the first storage tank by using a water outlet on the side wall of the second storage tank.
And S6, loading the dehydrated tar in the second storage tank, and stopping loading when the liquid level in the second storage tank is reduced to 3.5 m.
S7, pumping all tar remaining in the second tank to the first tank.
And S8, when the tar liquid level in the first storage tank reaches 7 meters, heating the tar in the first storage tank by using steam, stopping heating when the tar in the first storage tank is heated to 100-110 ℃, and promoting the separation of the tar and water by utilizing the difference of the boiling points of the tar and the water.
S9, standing the tar in the first storage tank for three days after heating, and discharging clear water and light emulsified oil in the first storage tank after standing.
S10, loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 m; it should be mentioned that, when the temperature of the tar in the first storage tank is lower than 80 ℃, loading is performed to ensure the safety of the loading operation.
S11, when the liquid level of the third storage tank reaches 7.8 m-8.2 m, the second storage tank is changed to receive oil.
S12, standing the tar in the third storage tank for three days, discharging clear water and light emulsified oil in the third storage tank after standing, loading the dehydrated tar in the third storage tank, and stopping loading when the liquid level in the third storage tank is reduced to 3.5 m.
S13, pumping all tar in the third storage tank to the first storage tank.
When step S13 is completed, steps S8-S10 are performed again. Namely, when the tar liquid level in the first storage tank reaches 7 meters, heating the tar in the first storage tank by using steam, when the tar in the first storage tank is heated to 100-110 ℃, stopping heating, and utilizing the difference of the boiling points of the tar and water to promote the separation of the tar and the water; standing the tar in the first storage tank for three days after heating, and discharging clear water and light emulsified oil in the first storage tank after standing; and then loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 meters.
The moisture content of the tar stored in the oil depot is controlled by using the moisture control method of the tar, so that the second storage tank and the third storage tank can be used for alternately carrying out oil receiving, standing, water discharging, car loading and tank transferring operations, the first storage tank is used for receiving part of the tar in the second storage tank and the third storage tank, and the tar is subjected to heating, water discharging and car loading operations; the tar produced by the tar moisture control method can ensure that the moisture content is less than or equal to 4 percent so as to ensure the quality of the tar and meet the requirements of customers; the method for controlling the moisture of the tar is simple and feasible and is convenient to operate.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method for controlling moisture content of tar, the method being used for controlling moisture content of tar stored in an oil depot, the oil depot comprising a first storage tank, a second storage tank and a third storage tank, the method comprising the steps of:
s1, using the first storage tank of the oil depot to collect oil, and replacing the second storage tank to collect oil when the liquid level of the first storage tank reaches 7.8-8.2 m;
s2, standing the tar in the first storage tank, confirming the distribution condition of an oil layer in the first storage tank after standing, and discharging the clean water and the light emulsified oil in the first storage tank out of the first storage tank;
s3, loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 m;
s4, when the liquid level of the second storage tank reaches 7.8-8.2 m, the third storage tank is changed to receive oil;
s5, standing the tar in the second storage tank, confirming the distribution condition of an oil layer in the second storage tank after standing, and discharging clear water and light emulsified oil in the second storage tank;
s6, loading the dehydrated tar in the second storage tank, and stopping loading when the liquid level in the second storage tank is reduced to 3.5 m;
s7, pumping all tar in the second storage tank to the first storage tank through a pump;
s8, when the tar liquid level in the first storage tank reaches 7 m, heating the tar in the first storage tank so as to separate the tar from the water;
s9, standing tar in the first storage tank after heating, and discharging clear water and light emulsified oil in the first storage tank after standing;
s10, loading the dehydrated tar in the first storage tank, and stopping loading when the liquid level in the first storage tank is reduced to 3.5 m;
s11, when the liquid level of the third storage tank reaches 7.8-8.2 m, the second storage tank is replaced to receive oil;
s12, standing the tar in the third storage tank, discharging clean water and light emulsified oil in the third storage tank after standing, loading the dehydrated tar in the third storage tank, and stopping loading when the liquid level in the third storage tank is reduced to 3.5 m;
s13, pumping all tar in the third storage tank to the first storage tank.
2. The method of controlling moisture in tar according to claim 1, wherein steps S8-S10 are performed again after step S13 is completed.
3. The method of controlling moisture content of tar according to claim 1, wherein the tar is allowed to stand for three days.
4. The method of controlling moisture content of tar according to claim 1, wherein in step S8, the tar in the first tank is heated with steam.
5. The method of controlling moisture in tar according to claim 1, wherein in step S8, heating is stopped when the temperature of tar in the first tank is raised to 100-110 ℃.
6. The method of controlling moisture content of tar according to claim 1, wherein in step S10, the tar is loaded into the first tank after the temperature of the tar is lower than 80 ℃.
7. The method of controlling moisture content of tar according to claim 1, wherein five drain openings are provided in each of the side walls of the first tank, the second tank, and the third tank, and the five drain openings are provided at intervals in the vertical direction.
8. The method of controlling moisture content of tar according to claim 7, wherein the intervals between the five water discharge openings are 0.5 m.
9. The method of controlling moisture content of tar according to claim 8, wherein the five drainage openings have a height of 8.0 m, 7.5m, 7.0m, 6.5m, 6.0m, respectively.
10. The method of controlling moisture in tar according to any of claims 1 to 9, wherein the tar storage capacity of each of the first storage tank, the second storage tank, and the third storage tank is 840 tons.
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| CN202110766484.0A CN113355120B (en) | 2021-07-07 | 2021-07-07 | Tar water control method |
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| CN202110766484.0A CN113355120B (en) | 2021-07-07 | 2021-07-07 | Tar water control method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0003962A (en) * | 2000-07-17 | 2002-04-30 | Acesita S A | Vegetable tar fractionation process |
| WO2015186459A1 (en) * | 2014-06-06 | 2015-12-10 | 栗田工業株式会社 | Oil-water separation method |
| CN108339372A (en) * | 2018-01-04 | 2018-07-31 | 北京信诺海博石化科技发展有限公司 | Mink cell focus stores or entrucking process generates the recovery process of oil gas |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139451A (en) * | 1977-12-12 | 1979-02-13 | Nalco Chemical Company | Method for dewatering coke tar-water mixtures |
| CN204874401U (en) * | 2015-07-08 | 2015-12-16 | 山东立人能源科技有限公司 | Oil -water separation apparatus |
| CN108690646A (en) * | 2017-04-12 | 2018-10-23 | 新疆八钢铁股份有限公司 | A kind of improved dehydration of tar method |
| CN211706458U (en) * | 2020-01-15 | 2020-10-20 | 乌海市西部煤化工有限责任公司 | Stabilize tar quality moisture evener |
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2021
- 2021-07-07 CN CN202110766484.0A patent/CN113355120B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0003962A (en) * | 2000-07-17 | 2002-04-30 | Acesita S A | Vegetable tar fractionation process |
| WO2015186459A1 (en) * | 2014-06-06 | 2015-12-10 | 栗田工業株式会社 | Oil-water separation method |
| CN108339372A (en) * | 2018-01-04 | 2018-07-31 | 北京信诺海博石化科技发展有限公司 | Mink cell focus stores or entrucking process generates the recovery process of oil gas |
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