CN111333481A - Method for improving deep color and turbidity problems of crude benzene product - Google Patents
Method for improving deep color and turbidity problems of crude benzene product Download PDFInfo
- Publication number
- CN111333481A CN111333481A CN202010190897.4A CN202010190897A CN111333481A CN 111333481 A CN111333481 A CN 111333481A CN 202010190897 A CN202010190897 A CN 202010190897A CN 111333481 A CN111333481 A CN 111333481A
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- China
- Prior art keywords
- regenerator
- product
- crude benzene
- improving
- unsaturated compounds
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims description 12
- 238000004821 distillation Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004939 coking Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000002845 discoloration Methods 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to the technical field of coking crude benzene production, in particular to a method for improving the problems of deep color and turbidity of a crude benzene product, which is used for an intermittent deslagging process of a regenerator, optimizes the operation of the regenerator and improves the degree of unsaturated compounds entering the product. The invention can effectively increase the conversion degree of unsaturated compounds in the wash oil to saturated compounds and reduce the content of unsaturated compounds in the debenzolization tower, thereby reducing the content of unsaturated compounds in the crude benzene product and realizing the reduction of the discoloration and resinification reaction of the crude benzene product. Meanwhile, the quality of the circulating wash oil is improved, the aim of clearing the product is fulfilled, the consumption is reduced, and the product stably presents a faint yellow and clear standard appearance.
Description
Technical Field
The invention relates to the technical field of coking crude benzene production, in particular to a method for improving the problems of deep color and turbidity of a crude benzene product.
Background
At present, the coking crude benzene production usually adopts positive pressure debenzolization, and a regenerator is used before debenzolization to improve the quality of wash oil. However, the deepening degree of the crude benzene product is heavier at present, and the newly-produced crude benzene product is in a turbid state, so that the crude benzene product is heavier and is dark brown red along with the prolonging of the storage time. The measures of replacing wash oil or increasing reflux are adopted, the improvement effect is not obvious, and the yield of crude benzene is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for improving the problems of dark color and turbidity of a crude benzene product.
The specific technical scheme is as follows:
a method for improving the problems of deep color and turbidity of crude benzene products is used for an intermittent deslagging process of a regenerator, optimizes the operation of the regenerator, and improves the degree of unsaturated compounds entering the products, and comprises the following specific steps:
(1) before debenzolization, the regenerator is used to improve the quality of the washing oil, the quantity of the washing oil is divided into 8-10 times of deslagging and new washing oil adding according to monthly consumption, the temperature at the bottom of the regenerator is strictly controlled to be 190-;
(2) and (3) distilling in a debenzolization tower, wherein the distillation process parameters are as follows: the top temperature of the debenzolization tower is 89-92 ℃, and the superheated steam is 380-430 ℃.
A residue tank of the regenerator is prepared with fresh tar with the volume of one half and the temperature of 75-85 ℃ in advance.
Compared with the prior art, the invention has the following beneficial technical effects:
(1) the application reasonably optimizes the operation of the regenerator, improves the degree of unsaturated compounds entering products, can effectively increase the degree of conversion of the unsaturated compounds in the wash oil to saturated compounds, and reduces the content of the unsaturated compounds in the debenzolization tower, thereby reducing the content of the unsaturated compounds in the crude benzene products and realizing the reduction of the discoloration and resinification reaction of the crude benzene products. Meanwhile, the quality of the circulating wash oil is improved, the aim of clearing the product is fulfilled, the consumption is reduced, and the product stably presents a faint yellow and clear standard appearance.
(2) The practice of the method has zero investment, and the technical achievement with little change and great effect is realized by improving and optimizing the intermittent deslagging operation of the regenerator.
(3) The circulating wash oil can stably realize 80-82% of distillate before 300 ℃, the wash oil consumption is reduced from 110 kg/ton benzene to 65-70 kg/ton benzene, and the appearance quality of the product is stable.
Detailed Description
The present invention will be described in detail with reference to examples, but the scope of the present invention is not limited by the examples.
Example 1:
the method for improving the problems of deep color and turbidity of the crude benzene product is used for the intermittent deslagging process of the regenerator, optimizes the operation of the regenerator, and improves the degree of unsaturated compounds entering the product, and comprises the following specific steps of:
(1) before debenzolization, a regenerator is used for improving the quality of washing oil, the quantity of the washing oil is divided into 8 times of deslagging and adding new washing oil according to monthly consumption, the bottom temperature of the regenerator is strictly controlled to be 190 ℃, the top temperature of the regenerator is strictly controlled to be 182 ℃, and the oil-stopping time of the regenerator is ensured to be 60 minutes;
(2) and (3) distilling in a debenzolization tower, wherein the distillation process parameters are as follows: the temperature of the top of the debenzolization tower is 89 ℃, and the superheated steam is 380 ℃.
A residue tank of the regenerator is prepared with fresh tar with the volume of one half and the temperature of 75 ℃ in advance.
Example 2:
the method for improving the problems of deep color and turbidity of the crude benzene product is used for an intermittent deslagging process of a regenerator, optimizes the operation of the regenerator, and improves the degree of unsaturated compounds entering the product, and comprises the following specific steps of:
(1) before debenzolization, a regenerator is used for improving the quality of the wash oil, the quantity of the wash oil is divided into 8-10 times of deslagging and adding new wash oil according to monthly consumption, the bottom temperature of the regenerator is strictly controlled to be 191 ℃, the top temperature of the regenerator is strictly controlled to be 183 ℃, and the oil-stopping time of the regenerator is ensured to be 70 minutes;
(2) and (3) distilling in a debenzolization tower, wherein the distillation process parameters are as follows: the temperature of the top of the debenzolization tower is 90 ℃, and the superheated steam is 400 ℃.
A residue tank of the regenerator is prepared with fresh tar with the volume of one half and the temperature of 80 ℃ in advance.
Example 3:
a method for improving the problems of deep color and turbidity of crude benzene products is used for an intermittent deslagging process of a regenerator, optimizes the operation of the regenerator, and improves the degree of unsaturated compounds entering the products, and comprises the following specific steps:
(1) before debenzolization, a regenerator is used for improving the quality of washing oil, the quantity of the washing oil is divided into 10 times of deslagging and adding new washing oil according to monthly consumption, the bottom temperature of the regenerator is strictly controlled to be 192 ℃, the top temperature of the regenerator is controlled to be 184 ℃, and the oil-stopping time of the regenerator is ensured to be 90 minutes;
(2) and (3) distilling in a debenzolization tower, wherein the distillation process parameters are as follows: the temperature of the top of the debenzolization tower is 92 ℃, and the superheated steam is 430 ℃.
A residue tank of the regenerator is prepared with fresh tar with the volume of about one half of that of the fresh tar at 85 ℃ in advance.
The products produced in the examples 1 to 3 are stable in performance, light yellow and clear, the distillate yield is 80 to 82 percent before 300 ℃ is stably realized by circulating wash oil, the wash oil consumption is reduced from 110 kg/ton benzene to 65 to 70 kg/ton benzene, and the appearance quality of the products is stable.
Claims (2)
1. A method for improving the problems of deep color and turbidity of a crude benzene product is characterized by being used for an intermittent deslagging process of a regenerator, optimizing the operation of the regenerator and improving the degree of unsaturated compounds entering the product, and comprises the following specific steps:
(1) before debenzolization, the regenerator is used to improve the quality of the washing oil, the quantity of the washing oil is divided into 8-10 times of deslagging and new washing oil adding according to monthly consumption, the temperature at the bottom of the regenerator is strictly controlled to be 190-;
(2) and (3) distilling in a debenzolization tower, wherein the distillation process parameters are as follows: the top temperature of the debenzolization tower is 89-92 ℃, and the superheated steam is 380-430 ℃.
2. The method for improving the problem of dark color and turbidity of crude benzene product according to claim 1, wherein: a residue tank of the regenerator is prepared with fresh tar with the volume of about one half and the temperature of 75-85 ℃ in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190897.4A CN111333481A (en) | 2020-03-18 | 2020-03-18 | Method for improving deep color and turbidity problems of crude benzene product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190897.4A CN111333481A (en) | 2020-03-18 | 2020-03-18 | Method for improving deep color and turbidity problems of crude benzene product |
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| Publication Number | Publication Date |
|---|---|
| CN111333481A true CN111333481A (en) | 2020-06-26 |
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|---|---|---|---|
| CN202010190897.4A Pending CN111333481A (en) | 2020-03-18 | 2020-03-18 | Method for improving deep color and turbidity problems of crude benzene product |
Country Status (1)
| Country | Link |
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| CN (1) | CN111333481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854461A (en) * | 2022-06-08 | 2022-08-05 | 铜陵泰富特种材料有限公司 | Method for regenerating hot lean oil under negative pressure debenzolization process condition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1616969A1 (en) * | 1989-01-09 | 1990-12-30 | Коммунарский Коксохимзавод | Method of recovering benzene hydrocarbons from coke gas |
| CN102776035A (en) * | 2012-07-26 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Regeneration process method of crude benzene hot lean oil |
| CN104927929A (en) * | 2015-06-29 | 2015-09-23 | 济南冶金化工设备有限公司 | Crude benzene distilling and washing oil regenerating heating system and method |
| CN105132042A (en) * | 2015-08-31 | 2015-12-09 | 山东铁雄新沙能源有限公司 | Slagging device of crude benzene regenerator and slagging method |
| CN105985815A (en) * | 2015-02-02 | 2016-10-05 | 中国庆华能源集团有限公司 | Method for controlling benzene content of benzene-washed coke oven gas in coke oven gas benzene washing system |
| CN107760389A (en) * | 2016-08-22 | 2018-03-06 | 郭莉 | The technique for carrying out eluting benzene efficiency based on coal gas in raising coal |
| CN108441268A (en) * | 2018-04-10 | 2018-08-24 | 李劲松 | A kind of coke-stove gas processing system and the method for carrying out crude benzol recovery |
-
2020
- 2020-03-18 CN CN202010190897.4A patent/CN111333481A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1616969A1 (en) * | 1989-01-09 | 1990-12-30 | Коммунарский Коксохимзавод | Method of recovering benzene hydrocarbons from coke gas |
| CN102776035A (en) * | 2012-07-26 | 2012-11-14 | 黑龙江建龙钢铁有限公司 | Regeneration process method of crude benzene hot lean oil |
| CN105985815A (en) * | 2015-02-02 | 2016-10-05 | 中国庆华能源集团有限公司 | Method for controlling benzene content of benzene-washed coke oven gas in coke oven gas benzene washing system |
| CN104927929A (en) * | 2015-06-29 | 2015-09-23 | 济南冶金化工设备有限公司 | Crude benzene distilling and washing oil regenerating heating system and method |
| CN105132042A (en) * | 2015-08-31 | 2015-12-09 | 山东铁雄新沙能源有限公司 | Slagging device of crude benzene regenerator and slagging method |
| CN107760389A (en) * | 2016-08-22 | 2018-03-06 | 郭莉 | The technique for carrying out eluting benzene efficiency based on coal gas in raising coal |
| CN108441268A (en) * | 2018-04-10 | 2018-08-24 | 李劲松 | A kind of coke-stove gas processing system and the method for carrying out crude benzol recovery |
Non-Patent Citations (1)
| Title |
|---|
| 煤气设计手册编写组 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854461A (en) * | 2022-06-08 | 2022-08-05 | 铜陵泰富特种材料有限公司 | Method for regenerating hot lean oil under negative pressure debenzolization process condition |
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Application publication date: 20200626 |
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