CN112280599B - Vertical multistage heating and distillation integrated wash oil regeneration equipment - Google Patents
Vertical multistage heating and distillation integrated wash oil regeneration equipment Download PDFInfo
- Publication number
- CN112280599B CN112280599B CN202011299299.7A CN202011299299A CN112280599B CN 112280599 B CN112280599 B CN 112280599B CN 202011299299 A CN202011299299 A CN 202011299299A CN 112280599 B CN112280599 B CN 112280599B
- Authority
- CN
- China
- Prior art keywords
- pipe
- wash oil
- section
- steam
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 238000004821 distillation Methods 0.000 title claims abstract description 33
- 230000008929 regeneration Effects 0.000 title claims abstract description 11
- 238000011069 regeneration method Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims description 14
- 230000010354 integration Effects 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000014759 maintenance of location Effects 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 29
- 239000007789 gas Substances 0.000 description 24
- 238000005192 partition Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 5
- 238000004939 coking Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- -1 benzene hydrocarbon Chemical class 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/16—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with non-aqueous liquids
- C10K1/18—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with non-aqueous liquids hydrocarbon oils
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to vertical multistage heating and distillation integrated wash oil regeneration equipment which comprises a body, a wash oil inlet pipe, a liquid distributor, a liquid distribution head, a heat exchange pipe, a first-stage collecting cone, a second-stage collecting cone, a distribution pipe, a wash oil collecting tank, a full launder, a convex inclined baffle plate with a lift pipe, a concave inclined baffle plate with a lift pipe, a superheated steam inlet, a steam outlet, a steam heating pipe, an oil gas outlet and a residue outlet. Compared with the prior art, the beneficial effects are as follows: the device has the advantages of compact structure, high heat transfer coefficient of the heating section, gradient utilization of steam heat, short retention time of wash oil, reduction of high-temperature polymerization loss of the wash oil and high recovery rate of the wash oil.
Description
Technical Field
The invention relates to the technical field of coking equipment, in particular to vertical multi-section heating and distillation integrated wash oil regeneration equipment.
Background
The coke oven gas contains benzene hydrocarbon, and the crude benzene is usually recovered and prepared in a crude benzene distillation section of the gas. At present, benzene products produced in the coking industry in China still occupy important positions, so that coking enterprises can effectively recycle benzene, and good economic benefits can be obtained.
The method generally adopted for benzene recovery is a recycle wash oil absorption method, and steam is used for stripping rich oil to obtain benzene steam, and then condensation is carried out to obtain a final product. The quality of the wash oil plays a very important role in recovering benzene, partial component polymerization of the wash oil can occur in the long-term circulation process, the quality of the wash oil can be gradually deteriorated to absorb impurities in various gases, the benzene absorption capacity is affected, and in order to stabilize and ensure the quality of the circulating wash oil, the wash oil must be regenerated in the production process of crude benzene products.
At present, the traditional washing oil regeneration equipment is a horizontal baffle plate regenerator, washing oil is heated by a gas tube furnace or a heat exchanger and then enters the top of the regenerator, and steam is directly introduced from the lower part of the regenerator to carry out distillation, purification and regeneration on the washing oil. The washing oil regeneration device has the defects of aggravated washing oil polymerization, poor heat transfer of a heat exchanger, great steam consumption, increased waste water quantity, high conveying energy consumption, inconvenient operation, large equipment occupation and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention solves the technical problem of providing the vertical multi-section heating and distillation integrated wash oil regeneration equipment which has the advantages of compact structure, high heat transfer coefficient of a heating section, gradient utilization of steam heat, short residence time of wash oil, reduction of high-temperature polymerization loss of the wash oil and high recovery rate of the wash oil.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
The utility model provides a vertical multistage heating and distillation integration wash oil regeneration facility, includes body, wash oil entry pipe, liquid distributor head, heat transfer pipe, one section collection awl, two sections collection awls, distributor pipe, wash oil collecting vat, full chute, take the convex inclined baffle of riser, take the concave inclined baffle of riser, superheated steam entry, steam outlet, steam heating pipe, oil gas export and residue export, characterized in that, wash oil entry pipe, liquid distributor head, heat transfer pipe are from top to bottom set gradually in the upper portion of body constitutes the heating section, superheated steam entry sets up on the heating section lower part body, steam outlet sets up on the heating section upper portion body; the first section of collecting cone and the second section of collecting cone are sequentially arranged in the middle of the lower body of the heating section from top to bottom to form a separation section; the upper end of the distribution pipe is connected with the two sections of collecting cones, the lower end of the distribution pipe is connected with a wash oil collecting tank with a steam heating pipe inside, a full chute is arranged below the wash oil collecting tank, a convex inclined baffle with a gas lift pipe is arranged below a full flow port of the full chute, the inner end of the distribution pipe is connected with the full chute, the outer end of the distribution pipe is suspended, a concave inclined baffle with the gas lift pipe is arranged below the convex inclined baffle with the gas lift pipe, the outer end of the distribution pipe is connected with the inner wall of the body, the inner end of the distribution pipe is suspended, the wash oil collecting tank, the full chute, the convex inclined baffle with the gas lift pipe and the concave inclined baffle with the gas lift pipe form a distillation layer, and a plurality of distillation layers are sequentially arranged at the lower part of the body from top to bottom to form a distillation section; the residue outlet is arranged on the lower body of the distillation section; the oil gas outlet is arranged in the middle of the separation section body.
Compared with the prior art, the invention has the beneficial effects that:
1) The vertical tower integrating multi-stage heating and distillation is adopted, so that the structure is compact, and the occupied area is small;
2) The efficient liquid distributor and liquid distribution head of the heating section ensure that the wash oil forms uniform liquid film flow on the inner wall of each heat exchange tube, the heat transfer coefficient is high, the residence time of the wash oil is short, and the high-temperature polymerization loss of the wash oil is reduced;
3) The separation section is provided with two sections of liquid phase collection cones, sufficient gas-liquid separation space is provided, gas phase separation is effectively realized, gas phase is discharged from a gas phase outlet of the separation section of the regenerator, the liquid phase is reduced to the distillation section through a distribution pipe, secondary multi-section heating wash oil is adopted, light components of the wash oil are further evaporated, and the recovery rate of the wash oil is high;
4) The distillation section is a multi-layer inclined partition plate structure with a riser, the evaporation area is enlarged by utilizing the partition plates, and the light components of the wash oil are further evaporated through repeated heating and distillation, so that the wash oil consumption is reduced;
5) In the distillation section, the heat of the superheated steam is utilized in a gradient way, the superheated steam firstly passes through a distillation section wash oil collecting tank, the steam temperature is 375-450 ℃, the wash oil is heated by fully utilizing the high-temperature sensible heat of the steam, then the steam enters an upper heating section, the latent heat of the steam is mainly utilized, the technical characteristics of the heating section are combined, the heat exchange with the wash oil is continued, and the maximum heat transfer effect is achieved under the low temperature difference.
Drawings
FIG. 1 is a schematic front view of the structural principles of the present invention;
FIG. 2 is a schematic view of the section A-A of FIG. 1 (convex inclined partition, concave inclined partition, and part of the steam heating pipe in the wash oil collection tank).
In the figure: 1-body 2-wash oil inlet pipe 3-liquid distributor 4-liquid distributor 5-heat exchange pipe 6-one-section collection cone 7-two-section collection cone 8-distribution pipe 9-wash oil collection tank 10-full launder 11-convex inclined baffle plate 12 with riser pipe, concave inclined baffle plate 13 with riser pipe, superheated steam inlet 14-steam outlet 15-steam heating pipe 16-oil gas outlet 17-residue outlet
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
Referring to fig. 1-2, the invention relates to a vertical multi-stage heating and distillation integrated wash oil regeneration device, which comprises a body 1, a wash oil inlet pipe 2, a liquid distributor 3, a liquid distribution head 4, a heat exchange pipe 5, a first-stage collection cone 6, a second-stage collection cone 7, a distribution pipe 8, a wash oil collection tank 9, a full flow tank 10, a convex inclined baffle 11 with a riser, a concave inclined baffle 12 with a riser, a superheated steam inlet 13, a steam outlet 14, a steam heating pipe 15, an oil gas outlet 16 and a residue outlet 17, wherein the wash oil inlet pipe 2, the liquid distributor 3, the liquid distribution head 4 and the heat exchange pipe 5 are sequentially arranged at the upper part of the body 1 from top to bottom to form a heating section, the superheated steam inlet 13 is arranged on the lower body 1 of the heating section, and the steam outlet 14 is arranged on the upper body 1 of the heating section; the first section of collection cone 6 and the second section of collection cone 7 are sequentially arranged in the middle of the lower body 1 of the heating section from top to bottom to form a separation section; the upper end of the distribution pipe 8 is connected with the two sections of collecting cones 7, the lower end of the distribution pipe is connected with a wash oil collecting tank 9 with a steam heating pipe 15 inside, a full chute 10 is arranged below the wash oil collecting tank 9, a convex inclined baffle 11 with a gas lift pipe is arranged below a full flow port of the full chute 10, the inner end of the distribution pipe is connected with the full chute 10, the outer end of the distribution pipe is suspended, a concave inclined baffle 12 with the gas lift pipe is arranged below the convex inclined baffle 11 with the gas lift pipe, the outer end of the distribution pipe is connected with the inner wall of the body 1, the inner end of the distribution pipe is suspended (the wash oil collecting tank 9 with the next layer below) is connected with the inner wall of the body 1, a distillation layer is formed by the wash oil collecting tank 9, the full chute 10, the convex inclined baffle 11 with the gas lift pipe and the concave inclined baffle 12 with the gas lift pipe, and a plurality of distillation layers are sequentially arranged at the lower part of the body 1 from top to bottom to form a distillation section; the residue outlet 17 is arranged on the distillation section lower body 1; the oil gas outlet 16 is arranged in the middle of the separation section body 1.
Working principle:
1) The wash oil enters through the wash oil inlet pipe 2, is uniformly distributed into each heat exchange pipe 5 under the combined action of the high-efficiency liquid distributor 3 and the liquid distribution head 4, uniformly flows downwards along the inner wall of the heat exchange pipe 5 in a film shape at the periphery of the vertical top under the action of gravity, efficiently transfers heat with steam between the heat exchange pipes 5, has short residence time in the heat exchange pipes 5, reduces the high-temperature polymerization loss of the wash oil, and the heated wash oil is collected into a section of collecting cone 6 and enters a separation section;
2) The first-stage collecting cone 6 and the second-stage collecting cone 7 of the separation section provide sufficient gas-liquid separation space, so that gas-liquid separation can be effectively realized, wash oil sequentially flows through the first-stage collecting cone 6 and the second-stage collecting cone 7, gas phase is discharged from the oil-gas outlet 16 of the separation section, and liquid phase is reduced to the distillation section through the distribution pipe 8;
3) The wash oil enters the wash oil collecting tank 9 through the distribution pipe 8, the wash oil heated by the steam heating pipe 15 slowly enters the full flow groove 10, and overflows to the convex inclined partition plate 11 uniformly after full flow, the evaporation area is enlarged by the convex inclined partition plate 11, the light components of the wash oil are further evaporated, the wash oil consumption is reduced through multiple heating and distillation of a plurality of distillation layers from top to bottom, and the unvaporized heavy components of the wash oil flow into the bottom and are discharged from the residue outlet 17.
In the distillation section, the heat of the superheated steam is utilized in a gradient way, the superheated steam firstly passes through a distillation section wash oil collecting tank 9, the steam temperature is 375-450 ℃, the wash oil is heated by fully utilizing the high-temperature sensible heat of the steam, then the steam enters an upper heating section, the latent heat of the steam is mainly utilized, the technical characteristics of the heating section are combined, the heat exchange with the wash oil is continued, and the maximum heat transfer effect is achieved under the low temperature difference.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. The utility model provides a vertical multistage heating and distillation integration wash oil regeneration facility, includes body, wash oil entry pipe, liquid distributor head, heat transfer pipe, one section collection awl, two sections collection awls, distributor pipe, wash oil collecting vat, full chute, take the convex inclined baffle of riser, take the concave inclined baffle of riser, superheated steam entry, steam outlet, steam heating pipe, oil gas export and residue export, characterized in that, wash oil entry pipe, liquid distributor head, heat transfer pipe are from top to bottom set gradually in the upper portion of body constitutes the heating section, superheated steam entry sets up on the heating section lower part body, steam outlet sets up on the heating section upper portion body; the first section of collecting cone and the second section of collecting cone are sequentially arranged in the middle of the lower body of the heating section from top to bottom to form a separation section; the upper end of the distribution pipe is connected with the two sections of collecting cones, the lower end of the distribution pipe is connected with a wash oil collecting tank internally provided with a steam heating pipe, a full flow groove is arranged below the wash oil collecting tank, a convex inclined baffle plate with a gas lift pipe is arranged below a full flow opening of the full flow groove, the inner end of the distribution pipe is connected with the full flow groove, the outer end of the distribution pipe is suspended, a concave inclined baffle plate with the gas lift pipe is arranged below the convex inclined baffle plate with the gas lift pipe, the outer end of the distribution pipe is connected with the inner wall of the body, the inner end of the distribution pipe is suspended, the wash oil collecting tank, the full flow groove, the convex inclined baffle plate with the gas lift pipe and the concave inclined baffle plate with the gas lift pipe form a distillation layer, and a plurality of distillation layers are sequentially arranged at the lower part of the body from top to bottom to form a distillation section; the residue outlet is arranged on the lower body of the distillation section; the oil gas outlet is arranged in the middle of the separation section body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299299.7A CN112280599B (en) | 2020-11-19 | 2020-11-19 | Vertical multistage heating and distillation integrated wash oil regeneration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299299.7A CN112280599B (en) | 2020-11-19 | 2020-11-19 | Vertical multistage heating and distillation integrated wash oil regeneration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112280599A CN112280599A (en) | 2021-01-29 |
| CN112280599B true CN112280599B (en) | 2024-07-09 |
Family
ID=74399268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011299299.7A Active CN112280599B (en) | 2020-11-19 | 2020-11-19 | Vertical multistage heating and distillation integrated wash oil regeneration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112280599B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113599856B (en) * | 2021-08-11 | 2022-03-25 | 安徽晟捷新能源科技股份有限公司 | Equipment for recycling tar at bottom of NMP (N-methyl pyrrolidone) rectifying tower |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213771923U (en) * | 2020-11-19 | 2021-07-23 | 中冶焦耐(大连)工程技术有限公司 | Vertical multi-section heating and distillation integrated washing oil regeneration equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB723875A (en) * | 1950-08-16 | 1955-02-16 | Koppers Gmbh Heinrich | Distillation process for obtaining fractions rich in benzole from benzoleenriched wash oil |
| GB766120A (en) * | 1952-06-20 | 1957-01-16 | Koppers Gmbh Heinrich | Improvements in or relating to the distillation of benzolised wash oil |
| GB843978A (en) * | 1957-01-31 | 1960-08-10 | Koppers Co Inc | Improvements in or relating to the separation of an absorbed liquid component from an absorption liquid |
| CN101474490B (en) * | 2008-12-11 | 2012-02-08 | 中冶焦耐工程技术有限公司 | Method for regenerating wash oil |
| CN102441315B (en) * | 2010-10-12 | 2014-04-02 | 中国石油化工股份有限公司 | Method for regenerating oil gas recovery absorption solution |
| CN104403704B (en) * | 2014-11-21 | 2016-05-11 | 中冶焦耐工程技术有限公司 | Steam Heating washing oil negative pressure crude benzol distil process and equipment |
-
2020
- 2020-11-19 CN CN202011299299.7A patent/CN112280599B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213771923U (en) * | 2020-11-19 | 2021-07-23 | 中冶焦耐(大连)工程技术有限公司 | Vertical multi-section heating and distillation integrated washing oil regeneration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112280599A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103131432B (en) | Method for recovering waste heat from coke oven raw gas | |
| CN104031658B (en) | High temperature raw gas waste heat and tar recovery system and recovery method thereof | |
| CN101424453A (en) | High temperature heat integration system for oil-extraction plant and use thereof | |
| CN102816573A (en) | Coke-oven single novel bridge pipe raw gas waste-heat recovery device | |
| CN112280599B (en) | Vertical multistage heating and distillation integrated wash oil regeneration equipment | |
| CN213771923U (en) | Vertical multi-section heating and distillation integrated washing oil regeneration equipment | |
| CN210215250U (en) | High-efficient distillation system of coal tar | |
| CN206570285U (en) | A kind of coal oven dithio-gas crude benzene recovery device | |
| CN110551513B (en) | Multi-pipe layer asphalt falling film cooler and asphalt cooling forming process applied by same | |
| CN206385105U (en) | A kind of coke-stove gas efficiently elutes benzene series system | |
| CN206014776U (en) | Catalytic cracking unit | |
| CN105112109B (en) | A kind of piece-rate system of raw gas | |
| CN207738699U (en) | A kind of gas complete alternation distillation system for the long flame dry distillation of coal | |
| CN202808703U (en) | Single novel bridge tube waste gas waste heat recovery device for coke oven | |
| CN212298944U (en) | Rich oil debenzolization condensate water circulation system of recycling | |
| CN200974829Y (en) | Auxiliary fractionating tower | |
| CN111594826A (en) | Rich oil debenzolization condensate water recycling system and method | |
| CN106839808A (en) | Raw coke oven gas waste heat high/low temperature comprehensive recovery system and method | |
| CN117797502A (en) | Washing oil regeneration equipment | |
| CN111253985A (en) | Device and process for raw gas cooling and fraction primary separation | |
| CN204987932U (en) | Coking raw coke oven gas waste heat recovery device | |
| CN205953946U (en) | Coke oven gas cooling waste heat recovery device | |
| CN110906760B (en) | Double-tube-plate double-tube-layer asphalt falling film cooler and cooling system and process thereof | |
| CN205953947U (en) | Coke oven gas liquid film cooling device | |
| CN104828775B (en) | A device used for CO gas conversion and cooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |