CN208980678U - A kind of negative pressure rich oil de-benzene system for coke oven gas purification and without regenerating wash oil - Google Patents
A kind of negative pressure rich oil de-benzene system for coke oven gas purification and without regenerating wash oil Download PDFInfo
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- CN208980678U CN208980678U CN201821662259.2U CN201821662259U CN208980678U CN 208980678 U CN208980678 U CN 208980678U CN 201821662259 U CN201821662259 U CN 201821662259U CN 208980678 U CN208980678 U CN 208980678U
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Abstract
The negative pressure rich oil de-benzene system that this application provides a kind of for coke oven gas purification and without regenerating wash oil, including debenzolizing tower, oil gas heat exchanger, oil water separator, reflux column, reflux pump, light benzene slot, vacuum pump, one section of oily oil heat exchanger, two sections of oily oil heat exchangers, one section of oil-poor cooler, two sections of oil-poor coolers, tube furnace, oil-poor pump；The hot fluid outlet ports of oil gas heat exchanger are connected to the air inlet of vacuum pump, realize negative pressure rich oil de-benzene, and de- benzene effect is more preferable, oil-poor lower containing benzene, and low compared with normal pressure 0.15% or so；Slag-drip opening is provided on the pipeline that the liquid outlet of oil-poor pump is connected to the hot fluid inlet of two sections of oily oil heat exchangers to take out in the form of tar, achieve significant economic benefit for the slag at tower bottom in debenzolizing tower to be expelled to tar；It without regeneration deslagging, thoroughly solves the problems such as former regenerator deslagging VOCs smell pollution environment, and substantially reduce worker's labor intensity, saves former wash oil regeneration device investment significantly.
Description
Technical field
The utility model relates to coke oven gas purification technical fields, are used for coke oven gas purification and nothing more particularly, to one kind
The negative pressure rich oil de-benzene system of regenerating wash oil.
Background technique
Rich oil de-benzene technology is a necessary links during coking industry gas purification, and coal gas first passes through Xi Ben workshop section
Wash benzene column top spray elution oil wash benzene, the washing oil after washing benzene is due to absorbing a large amount of benzene hydrocarbon and other organic matters in coal gas
Referred to as rich washing oil (abbreviation rich oil).Rich oil becomes poor washing oil (referred to as oil-poor) after debenzolizing tower takes off benzene.It is oil-poor return wash benzene column after
It is continuous to wash benzene, it so recycles, ensure that the trouble-free operation of coking industry gas purification.
Currently, rich oil de-benzene mostly uses negative pressure benzene removal technology, principle is the environmental pressure by reducing liquid level or more, is made
Rich oil boiling point is obtained far below the boiling point under its normal pressure, and improves the relative volatility of benezene material, is being lower than atmospheric operation temperature
Lower steam benezene material from rich oil takes off, and regenerates rich oil.
It include oil-poor process flow in rich oil negative pressure benzene removal process, specifically: the part heat of negative pressure benzene removal tower tower reactor discharge
It is oil-poor be pumped up toward the diamond heating of debenzolizing tower after return to debenzolizing tower tower reactor as heat source；Another part heat is oil-poor by pumping through cold
But it returns afterwards and washes benzene column and continue to wash benzene；There are also the oil-poor inflow regenerators of sub-fraction heat to be regenerated to keep circulating washing oil matter
Amount.
Oil-poor that refining is distilled in regenerator, the gas phase of output is directly entered debenzolizing tower bottom, remains on regenerator tower
The residual oil of kettle returns to regenerator as distillation heat source, another part after a part of diamond heating being sent to outside regenerator of pump
Periodically drain into deslagging pond.
It is oil-poor to be regenerated in regenerator, it is in the nature the second distillation refining of rich oil negative pressure benzene removal, only rich oil negative pressure is de-
Benzene is benzene type organic to be distilled off from the washing oil containing a large amount of benzene type organics, and oil-poor regeneration is from comprising largely weighing
Wash oil is gone out in the washing oil of matter and not volatile benzene type organic, regenerator is to vapo(u)rizing temperature and negative pressure as a result,
It is required that higher than debenzolizing tower.
During regenerator deslagging, worker's large labor intensity, live peculiar smell is serious, and a large amount of carcinogen loss are unfavorable for duty
Work is physically and mentally healthy, and it is to administer difficulties that especially crude benzol, which drains slag VOCs, needs to be transformed dreg removing system.
Utility model content
The purpose of this utility model is to provide a kind of for coke oven gas purification and the negative pressure rich oil without regenerating wash oil is de-
Benzene series system.
In order to solve the above technical problems, technical solution provided by the utility model are as follows:
A kind of negative pressure rich oil de-benzene system for coke oven gas purification and without regenerating wash oil, including debenzolizing tower, oil gas change
Hot device, oil water separator, reflux column, reflux pump, light benzene slot, vacuum pump, one section of oily oil heat exchanger, two sections of oily oil heat exchangers, one
The oil-poor cooler of section, two sections of oil-poor coolers, tube furnace, oil-poor pump；
The cold fluid inlet of the oil gas heat exchanger is used for the oil outlet that pumps with rich oil and is connected to, the oil gas heat exchanger it is cold
Fluid outlet be connected to the cold fluid inlet of described two sections oily oil heat exchangers, the cold fluid outlet of described two sections oily oil heat exchangers and
The cold fluid inlet connection of described one section oily oil heat exchanger, the cold fluid outlet and the tube furnace of described one section oily oil heat exchanger
Rich oil inlet communication, the rich oil inlet communication of the oil rich outlet of the tube furnace and the debenzolizing tower；
The outlet of light benzene gas at the tower top of the hot fluid inlet of the oil gas heat exchanger and the debenzolizing tower, it is described
The hot fluid outlet ports of oil gas heat exchanger are connected to the air inlet of the vacuum pump, the gas outlet of the vacuum pump and the gas pipe
Road connection, the hot fluid outlet ports of the oil gas heat exchanger are also connected to the inlet of the oil water separator, the water-oil separating
The liquid outlet of device is connected to the inlet of the reflux column, and the inlet of the liquid outlet of the reflux column and the light benzene slot connects
It is logical；
The liquid outlet of the reflux column is also connected to the inlet of the reflux pump, the liquid outlet of the reflux pump with it is described
Refluxing opening connection at the tower top of debenzolizing tower；
The hot fluid inlet of described one section oily oil heat exchanger and the oil-poor outlet at the tower reactor of the debenzolizing tower, it is described
The hot fluid outlet ports of one section of oily oil heat exchanger and the oil-poor inlet communication at the tower reactor of the debenzolizing tower；
Oil-poor outlet at the oil inlet of the oil-poor pump and the tower reactor of the debenzolizing tower, the oil-poor pump it is fuel-displaced
Mouth is connected to the hot fluid inlet of described two sections oily oil heat exchangers, the hot fluid outlet ports and described one of described two sections oily oil heat exchangers
The hot fluid inlet connection of the oil-poor cooler of section, the hot fluid outlet ports of one section of oil-poor cooler and two sections of oil-poor coolings
The hot fluid inlet of device is connected to, the hot fluid outlet ports of two sections of oil-poor coolers and the oil-poor inlet communication for washing benzene column；
It is provided on the pipeline that the oil outlet of the oil-poor pump is connected to the hot fluid inlet of described two sections oily oil heat exchangers
For deslagging slag-drip opening with for by the slag at tower bottom in the debenzolizing tower be expelled to mechanical settling tank, tar medial launder,
In one or several in tar product slot and tar library.
Preferably, the heavy benzol outlet on the debenzolizing tower top is connected to the inlet of heavy benzol slot.
Preferably, the naphtalene oil outlet on the debenzolizing tower top is connected to the inlet of naphtalene oil slot.
The application has beneficial technical effect below:
1. the hot fluid outlet ports of oil gas heat exchanger are connected to the air inlet of vacuum pump, the negative pressure rich oil for realizing debenzolizing tower is de-
Benzene, takes off that benzene effect is more preferable, and oil-poor lower (0.15% or so) low compared with normal pressure, enhances and wash benzene effect containing benzene.
2. being provided on the pipeline that the liquid outlet of oil-poor pump is connected to the hot fluid inlet of two sections of oily oil heat exchangers for arranging
The slag-drip opening of slag is for being expelled to mechanical settling tank, tar medial launder, tar product slot for the slag at tower bottom in debenzolizing tower
And in one or several in tar library, slag is mixed into tar, it is taken out in the form of tar, achieves significant economic effect
Benefit.
3. no longer needing this package unit of regenerating wash oil, no regeneration deslagging thoroughly solves former regenerator deslagging
The problems such as VOCs smell pollution environment, and substantially reduce worker's labor intensity.
4. rich oil de-benzene no longer needs this package unit of regenerating wash oil, regenerator, dreg removing system are saved significantly
Equal equipment investments.
Detailed description of the invention
It is a kind of for coke oven gas purification and the negative pressure without regenerating wash oil is rich that Fig. 1 is that the embodiments of the present invention provide
The operation principle schematic diagram of the de- benzene series system of oil.
In figure: 1 debenzolizing tower, 2 oil gas heat exchangers, 3 oil water separators, 4 reflux columns, 5 reflux pumps, 6 light benzene slots, 7 vacuum pumps,
8 one sections of oily oil heat exchangers, 9 two sections of oily oil heat exchangers, 10 1 sections of oil-poor coolers, 11 2 sections of oil-poor coolers, 12 tube furnaces, 13
Oil-poor pump, 14 heavy benzol slots, 15 naphtalene oil slots, 16 wash benzene column.
Specific embodiment
In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically
The utility model is described in further detail for embodiment.
As shown in FIG. 1, FIG. 1 is the embodiments of the present invention provide one kind for coke oven gas purification and without washing oil again
The operation principle schematic diagram of raw negative pressure rich oil de-benzene system.
The negative pressure rich oil de-benzene system that this application provides a kind of for coke oven gas purification and without regenerating wash oil, including it is de-
Benzene column 1, oil gas heat exchanger 2, oil water separator 3, reflux column 4, reflux pump 5, light benzene slot 6,7, one sections of vacuum pump oily oil heat exchangers
8, oil-poor 10, the two sections of oil-poor coolers 11 of cooler of two sections of 9, one sections of oil heat exchangers of oil, tube furnace 12, oil-poor pump 13；
The oil outlet that the cold fluid inlet of the oil gas heat exchanger 2 is used to pump with rich oil is connected to, the oil gas heat exchanger 2
Cold fluid outlet is connected to the cold fluid inlet of described two sections oily oil heat exchangers 9, and the cold fluid of described two sections oily oil heat exchangers 9 goes out
Mouthful be connected to the cold fluid inlet of described one section oily oil heat exchanger 8, the cold fluid outlet of one section of oil oil heat exchanger 8 with it is described
The rich oil inlet communication of tube furnace 12, the rich oil inlet communication of the oil rich outlet of the tube furnace 12 and the debenzolizing tower 1；
The outlet of light benzene gas at the tower top of the hot fluid inlet of the oil gas heat exchanger 2 and the debenzolizing tower 1, institute
The hot fluid outlet ports for stating oil gas heat exchanger 2 are connected to the air inlet of the vacuum pump 7, the gas outlet of the vacuum pump 7 with it is described
Gas piping connection, the hot fluid outlet ports of the oil gas heat exchanger 2 are also connected to the inlet of the oil water separator 3, described
The liquid outlet of oil water separator 3 is connected to the inlet of the reflux column 4, the liquid outlet of the reflux column 4 and the light benzene slot 6
Inlet connection；
The liquid outlet of the reflux column 4 is also connected to the inlet of the reflux pump 5, the liquid outlet of the reflux pump 5 with
Refluxing opening connection at the tower top of the debenzolizing tower 1；
The hot fluid inlet of described one section oily oil heat exchanger 8 and the oil-poor outlet at the tower reactor of the debenzolizing tower 1, institute
State the oil-poor inlet communication at the hot fluid outlet ports of one section of oily oil heat exchanger 8 and the tower reactor of the debenzolizing tower 1；
Oil-poor outlet at the oil inlet of the oil-poor pump 13 and the tower reactor of the debenzolizing tower 1, the oil-poor pump 13
Oil outlet be connected to the hot fluid inlet of described two sections oily oil heat exchangers 9, the hot fluid outlet ports of two sections of oil oil heat exchanger 9
Be connected to the hot fluid inlet of described one section oil-poor cooler 10, the hot fluid outlet ports of one section of oil-poor cooler 10 with it is described
The hot fluid inlet connection of two sections of oil-poor coolers 11, the hot fluid outlet ports of two sections of oil-poor coolers 11 and washes benzene column 16
Oil-poor inlet communication；
It is arranged on the pipeline that the oil outlet of the oil-poor pump 13 is connected to the hot fluid inlet of described two sections oily oil heat exchangers 9
There is the slag-drip opening for deslagging for the slag at tower bottom in the debenzolizing tower 1 to be expelled to mechanical settling tank, among tar
In one or several in slot, tar product slot and tar library.
In one embodiment of the application, the heavy benzol outlet on 1 top of debenzolizing tower and the inlet of heavy benzol slot 14 connect
It is logical.
In one embodiment of the application, the naphtalene oil outlet on 1 top of debenzolizing tower and the inlet of naphtalene oil slot 15 connect
It is logical.
In the application, debenzolizing tower 1, oil gas heat exchanger 2, oil water separator 3, reflux column 4, reflux pump 5, light benzene slot 6, heavy benzol
Slot 14, naphtalene oil slot 15,7, one sections of vacuum pump oily oil-poor 10, two sections of cooler of 9, one sections of the oil heat exchangers of 8, two sections of oily oil heat exchanger are poor
Oil cooler 11, tube furnace 12 and oil-poor pump 13 are the usual means in coke oven gas purification in rich oil de-benzene, the application
With no restriction to its model and structure, it is able to satisfy above-mentioned function.
In the application, 2, one sections of oil gas heat exchanger oily oil heat exchangers, 8, two sections of oily oil heat exchangers, 9, one sections of oil-poor coolers 10
And two sections of oil-poor coolers 11 are indirect contact heat exchanger device, have hot fluid to flow therethrough with cold fluid, hot fluid and cold flow
Body exchanges heat across heat-conducting metal mediate contact, and hot fluid is cooled after heat exchange, and cold fluid is heated, and has hot fluid to circulate
Zone of heat liberation, certain zone of heat liberation have hot fluid inlet and hot fluid outlet ports, the cold fluid pass for having cold fluid to circulate,
Certain cold fluid pass has cold fluid inlet and cold fluid outlet, 2, one sections of above-mentioned oil gas heat exchanger oily 8, two sections of oil heat exchangers
The oil-poor cooler 10 of 9, one sections of oily oil heat exchanger and two sections of oil-poor coolers 11 are the prior art, and details are not described herein again.
The application saves the principle of regenerating wash oil workshop section: the regeneration washing oil amount of washing oil regenerating column is global cycle washing oil amount
2% hereinafter, amount is fewer, and after cancelling washing oil regenerating column, regenerating wash oil no longer passes through enters regenerator regeneration on a small quantity, but passes through
It improves reduced pressure and vacuum distillation regeneration is carried out to circulating washing oils all in debenzolizing tower, reach regenerating wash oil purpose.
Currently, a part of oil-poor be pumped up toward the tube furnace outside debenzolizing tower in debenzolizing tower tower reactor is heated, then
Debenzolizing tower tower reactor is returned as distillation heat source.Tube furnace is indirect heating.Due to it is oil-poor be absorb benzene type organic rich oil steam
Product after evaporating refining, interior still containing a large amount of heavys, not volatile benzene type organics, cause oil-poor viscosity compared with
Greatly, mobility is poor, poor thermal conductivity so that it is oil-poor connection debenzolizing tower and tube furnace inflow pipe and effuser in and tubular type
Flowing slowly, frequently results in line clogging in the pipeline of furnace interior, and heat transfer effect is poor, and the temperature in debenzolizing tower tower reactor is lower and wave
It moves larger, has seriously affected the distilling effect and product quality of debenzolizing tower.
For this purpose, heat-conducting oil pipes are provided in the tower reactor of the debenzolizing tower in one embodiment of the application, it is described thermally conductive
One end of oil pipe is connected to the oil-feed port of thermal oil heating piping system, and the other end of the heat-conducting oil pipes passes through heat conduction oil circulating pump and institute
State the oil return opening connection of thermal oil heating piping system.
Using the conduction oil of circulation, to the oil-poor carry out indirect heating in debenzolizing tower tower reactor, former pipe is substituted in the application
Formula furnace, no longer allows pipeline internal circulation flow inside oil-poor pipeline and tube furnace between debenzolizing tower and tube furnace, thoroughly
It solves sticky oil-poor flow in pipeline and is easy blocking, the problem of heat transfer effect difference improves oil-poor in debenzolizing tower tower reactor
Temperature and temperature stability, improve the distilling effect and product quality of debenzolizing tower.And conduction oil have high temperature, low pressure,
Heat exchange efficiency height and highly-safe feature, can effectively reduce the energy consumption of rich oil de-benzene system.Conduction oil can in production process
It deactivates at any time, fundamentally solves the problems, such as oil-poor coking in former tube furnace, ensure that the normal fortune of rich oil de-benzene system
Turn.
Thermal oil heating piping system is that the conduction oil after heating is transported to heat-conducting oil heating using burning fuel or electric heating
Heating equipment, then heat-conducting oil furnace is sent back to for conduction oil that the oil outlet of heating equipment is discharged is counter by heat conduction oil circulating pump, it is formed
One complete loop heating system.Thermal oil heating piping system uses digital display type temperature controller temperature control, has overtemperature alarm, low oil level report
Alert, over pressure warning function because high temperature, low pressure, the advantages such as run smoothly and be widely used.Thermal oil heating piping system includes leading
Hot oil furnace, heat conduction oil circulating pump, gs-oil separator, oil storage tank, expansion slot and the oil pipeline for being connected to above equipment.
Heat-conducting oil pipes are laid in 1 tower reactor of debenzolizing tower, heat-conducting oil pipes can be located at oil-poor liquid level hereinafter, or part position
In oil-poor liquid level hereinafter, may be located on oil-poor liquid level, heat-conducting oil pipes are preferably all embedded in oil-poor liquid level by the application
Hereinafter, to improve heat exchange efficiency.Heat-conducting oil pipes in 1 tower reactor of debenzolizing tower answer tortuous arrangement, preferably S-shaped, to improve conduction oil
The heat exchange area of pipe and residual oil.One end of heat-conducting oil pipes is connected to the oil-feed port of thermal oil heating piping system, the other end of heat-conducting oil pipes
It is connected to by heat conduction oil circulating pump with the oil return opening of thermal oil heating piping system.
The application has beneficial technical effect below:
1. the hot fluid outlet ports of oil gas heat exchanger 2 are connected to the air inlet of vacuum pump 7, the negative pressure for realizing debenzolizing tower 1 is rich
The de- benzene of oil, de- benzene effect is more preferable, oil-poor lower containing benzene, and low compared with normal pressure 0.15% or so, it enhances and washes benzene effect.
It is used for 2. being provided on the pipeline that the liquid outlet of oil-poor pump 13 is connected to the hot fluid inlet of two sections of oily oil heat exchangers 9
The slag-drip opening of deslagging is for being expelled to mechanical settling tank, tar medial launder, tar product for the slag at tower bottom in debenzolizing tower 1
In one or several in slot and tar library, slag is mixed into tar, is taken out in the form of tar, significant economic effect is achieved
Benefit.
3. no longer needing this package unit of regenerating wash oil, no regeneration deslagging thoroughly solves former regenerator deslagging
The problems such as VOCs smell pollution environment, and substantially reduce worker's labor intensity.
4. rich oil de-benzene no longer needs this package unit of regenerating wash oil, regenerator, dreg removing system are saved significantly
Equal equipment investments.
The method and device that the application is not described in detail is the prior art.
Specific embodiment used herein is expounded the principles of the present invention and embodiment, the above implementation
The explanation of example is merely used to help understand the method and its core concept of the utility model.It should be pointed out that for the art
Those of ordinary skill for, without departing from the principle of this utility model, can also to the utility model carry out it is several
Improvement and modification, modifications and modifications also fall within the protection scope of the claims of the utility model.
Claims (3)
1. a kind of negative pressure rich oil de-benzene system for coke oven gas purification and without regenerating wash oil, which is characterized in that including taking off benzene
Tower, oil gas heat exchanger, oil water separator, reflux column, reflux pump, light benzene slot, vacuum pump, one section of oily oil heat exchanger, two sections of oil oil
Heat exchanger, one section of oil-poor cooler, two sections of oil-poor coolers, tube furnace, oil-poor pump；
The oil outlet that the cold fluid inlet of the oil gas heat exchanger is used to pump with rich oil is connected to, the cold fluid of the oil gas heat exchanger
Outlet is connected to the cold fluid inlet of described two sections oily oil heat exchangers, the cold fluid outlet of two sections of oil oil heat exchanger with it is described
The cold fluid inlet connection of one section of oily oil heat exchanger, the richness of the cold fluid outlet and the tube furnace of described one section oily oil heat exchanger
Oil inlet connection, the rich oil inlet communication of the oil rich outlet of the tube furnace and the debenzolizing tower；
The outlet of light benzene gas at the tower top of the hot fluid inlet of the oil gas heat exchanger and the debenzolizing tower, the oil gas
The hot fluid outlet ports of heat exchanger are connected to the air inlet of the vacuum pump, and the gas outlet of the vacuum pump is connected to gas piping,
The hot fluid outlet ports of the oil gas heat exchanger are also connected to the inlet of the oil water separator, and the oil water separator goes out liquid
Mouth is connected to the inlet of the reflux column, and the liquid outlet of the reflux column is connected to the inlet of the light benzene slot；
The liquid outlet of the reflux column is also connected to the inlet of the reflux pump, the liquid outlet of the reflux pump and the de- benzene
Refluxing opening connection at the tower top of tower；
The hot fluid inlet of described one section oily oil heat exchanger and the oil-poor outlet at the tower reactor of the debenzolizing tower, described one section
Oil-poor inlet communication at the tower reactor of the hot fluid outlet ports of oily oil heat exchanger and the debenzolizing tower；
Oil-poor outlet at the oil inlet of the oil-poor pump and the tower reactor of the debenzolizing tower, the oil outlet of the oil-poor pump with
The hot fluid inlet connection of two sections of oily oil heat exchangers, the hot fluid outlet ports of described two sections oily oil heat exchangers and described one section it is poor
The hot fluid inlet of oil cooler is connected to, the hot fluid outlet ports of one section of oil-poor cooler and two sections of oil-poor coolers
Hot fluid inlet connection, the hot fluid outlet ports of two sections of oil-poor coolers and the oil-poor inlet communication for washing benzene column；
It is provided with and is used on the pipeline that the oil outlet of the oil-poor pump is connected to the hot fluid inlet of described two sections oily oil heat exchangers
The slag-drip opening of deslagging is for being expelled to mechanical settling tank, tar medial launder, tar for the slag at tower bottom in the debenzolizing tower
In one or several in product slot and tar library.
2. negative pressure rich oil de-benzene system according to claim 1, which is characterized in that the heavy benzol on the debenzolizing tower top exports
It is connected to the inlet of heavy benzol slot.
3. negative pressure rich oil de-benzene system according to claim 1, which is characterized in that the naphtalene oil on the debenzolizing tower top exports
It is connected to the inlet of naphtalene oil slot.
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| CN201821662259.2U CN208980678U (en) | 2018-10-12 | 2018-10-12 | A kind of negative pressure rich oil de-benzene system for coke oven gas purification and without regenerating wash oil |
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| CN201821662259.2U CN208980678U (en) | 2018-10-12 | 2018-10-12 | A kind of negative pressure rich oil de-benzene system for coke oven gas purification and without regenerating wash oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811618A (en) * | 2022-04-04 | 2022-07-29 | 上海圣升化工科技有限公司 | Comprehensive treatment method for standard emission of coking tail gas |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811618A (en) * | 2022-04-04 | 2022-07-29 | 上海圣升化工科技有限公司 | Comprehensive treatment method for standard emission of coking tail gas |
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Effective date of registration: 20200428 Address after: 010000 e-A, University Science Park, Genghis Khan East Street, new urban area, Hohhot City, Inner Mongolia Autonomous Region Co-patentee after: Shandong Shengsheng Engineering Technology Co., Ltd Patentee after: Inner Mongolia Environmental Protection Technology Co., Ltd Address before: 250101 East Tower of Shangri-La District, 88 Exhibition West Road, Jinan High-tech Zone, Shandong Province Patentee before: Wang Shuhu |