CN109628122A - A kind of process reducing coal tar sodium ions content - Google Patents
A kind of process reducing coal tar sodium ions content Download PDFInfo
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- CN109628122A CN109628122A CN201811580856.5A CN201811580856A CN109628122A CN 109628122 A CN109628122 A CN 109628122A CN 201811580856 A CN201811580856 A CN 201811580856A CN 109628122 A CN109628122 A CN 109628122A
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- China
- Prior art keywords
- dephenolize
- naphtalene oil
- naphtalene
- coal tar
- flowed
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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
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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 discloses a kind of processes for reducing coal tar sodium ions content, it include: to be connected to dephenolize naphtalene oil medial launder T-2206 in K-2203 tower top, lower part dephenolize naphtalene oil feeding line increase process pipelines, valve, during device is stopped work, naphtalene oil is flowed into the lower part K-2203 clarifying chamber in K-2202 tower, the lower part K-2203 clarifies indoor dephenolize naphtalene oil and is flowed into dephenolize naphtalene oil medial launder T-2206 using difference in height, is then sent through in product dephenolize naphtalene oil slot；It clarifies indoor dephenolize naphtalene oil and is also flowed into dephenolize naphtalene oil medial launder T-2206 using difference in height in K-2203 tower top.Through the above way, the present invention can be with clearer process design, lower low cost solves the problems, such as to bring into raw tar slot indirectly due to the sodium ion contained in dephenolize naphtalene oil so as to cause the raising of coal tar sodium ion, avoids final coal tar because of adverse effect brought by sodium ion is excessively high.
Description
Technical field
The present invention relates to chemical fields, are specifically related to a kind of process for reducing coal tar sodium ions content.
Background technique
For the crude naphthalene product of output qualification in plant produced coal tar processing device, it is de- to need to build a set of naphtalene oil
Phenol device, naphtalene oil slough containing phenols, qualified crude naphthalene is obtained by distillation under pressure technique as crude naphthalene device raw material
Product.Naphtalene oil dephenolize device needs to be added in daily production concentration 10%NaOH solution, when device is stopped work, in device
Remaining dephenolize naphtalene oil is vented to emptying oil groove, is delivered to raw tar slot by pump, since dephenolize naphtalene oil contains sodium ion warp
Raw tar slot sodium ion can be caused to increase after crossing shut-down, material quality is caused to change.Therefore it needs to stop work to naphtalene oil dephenolize device
When dephenolize naphtalene oil emptying carry out technology optimization, reach reduce raw material coal tar sodium ions content target.
Naphtalene oil dephenolize device is still entered using dephenolize naphtalene oil and is put during shut-down in current each tar production production technology
Empty oil groove is delivered to raw tar slot, mode spacing sodium ion being brought into coal tar raw material by pump.When naphtalene oil phenol
When content fluctuation goes up, 10%NaOH solution dosage needs to improve, and device is repeatedly opened using intermittent production method, device
After shut-down, the sodium ions content of coal tar can add up to increase, and at this moment the sodium ions content in coal tar can be more than 100ppm.
State Intellectual Property Office discloses the patent document of Publication No. CN 104232133A, in a kind of reduction coal tar
The method of potassium, sodium ions content, which is characterized in that the specific steps are enter tar slag for the technique waste water without metallic element
Preprocessor carries out the separation of tar ammonia and tar slag, and coal gas enters primary cooler cooling, and tar ammonia to tar slag pre-processes
Device；It is sieved in the exit of tar slag and gas-liquid separator equipped with castor, stays in bulky grain solid object in separator, and be deposited to
With the conical lower portion of separator, extracted out by tar press pump；Solid matter is crushed and sends back to coke in tar press pump
The top of the dregs of fat and separator；The mixture of tar and ammonium hydroxide is from preprocessor from tar and ammonia water separation hopper is flow to, wherein big portion
Ammonium hydroxide is divided to return to coke oven sprinkling, remaining ammonium hydroxide enters 1# remained ammonia together with the technique waste water that benzene hydrogenation and naphthols are processed
Slot, carries out precipitation and separation again in 1# remained ammonia slot, and water phase enters 2# remained ammonia slot, and that treated is useless for 2# remained ammonia slot
Water enters ammonium hydroxide large trough by solvent extraction tower.
State Intellectual Property Office discloses the patent document of Publication No. CN 104232133B, in a kind of reduction coal tar
The method of potassium, sodium ions content, which is characterized in that the specific steps are enter tar slag for the technique waste water without metallic element
Preprocessor carries out the separation of tar ammonia and tar slag, and coal gas enters primary cooler cooling, and tar ammonia to tar slag pre-processes
Device；It is sieved in the exit of tar slag preprocessor equipped with castor, stays in bulky grain solid object in tar slag preprocessor, and settle
To the conical lower portion of tar slag preprocessor, extracted out by tar press pump；Solid matter is pulverized simultaneously in tar press pump
Send back to the top of tar slag preprocessor；The mixture of tar and ammonium hydroxide divides from tar slag preprocessor from tar ammonia is flow to
From slot, wherein most ammonium hydroxide returns to coke oven sprinkling, remaining ammonium hydroxide together with the technique waste water that benzene hydrogenation and naphthols are processed into
Enter 1# remained ammonia slot, carry out precipitation and separation again in 1# remained ammonia slot, water phase enters 2# remained ammonia slot, 2# remained ammonia
Slot treated waste water enters ammonium hydroxide large trough by solvent extraction tower, increases oils extraction in the bottom of 1# remained ammonia slot
Mouthful, the heavy oils containing metallic element is periodically taken out in bottom, it is described treated waste water K content is reduced to 3ppm hereinafter,
Na is reduced to 50ppm or less.
By retrieval, not finding has the method similar with process of the present invention to use in existing patent document adds feed pipe
Line increase process pipelines, the method that is carried out during device is stopped work of valve connection medial launder T-2206 it is similar it is low at
This achievees the purpose that reduction coal tar sodium ions content technology.
Summary of the invention
In order to overcome above-mentioned deficiency, present invention aims at providing it is a kind of reduce coal tar sodium ions content technique side
Method.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: on K-2203 tower top, lower part dephenolize
Naphtalene oil feeding line increases process pipelines valve and is connected to device dephenolize naphtalene oil medial launder T-2206, stopped work in device
Naphtalene oil is flowed into the lower part K-2203 clarifying chamber in Cheng Zhong, K-2202 tower, and the lower part K-2203 is clarified indoor dephenolize naphtalene oil and is flowed into
In dephenolize naphtalene oil medial launder, then it is sent in product dephenolize naphtalene oil slot by pump；Clarify indoor dephenolize naphthalene in K-2203 tower top
Oil is flowed into dephenolize naphtalene oil medial launder T-2206, is then pumped in dephenolize naphtalene oil slot by machine；The dephenolize naphtalene oil of device everywhere
It is delivered in product dephenolize naphtalene oil slot.
Further, during device is stopped work, naphtalene oil is flowed by way of raising liquid level in K-2202 tower
The lower part K-2203 clarifying chamber.
Further, the lower part K-2203 clarifies indoor dephenolize naphtalene oil using liquid level difference and increases process pipelines
The mode of valve is fed directly in dephenolize naphtalene oil medial launder.
Further, the top K-2203 clarifies indoor dephenolize naphtalene oil and utilizes liquid level difference and increased process duct
Line is flowed into after dephenolize naphtalene oil medial launder T-2206 and is sent in product dephenolize naphtalene oil slot by pump again.
The beneficial effects of the present invention are: the method disclosed in the present may insure that device is repeatedly carrying out in shutting down,
Raw material coal tar sodium ion is reduced.This method input cost is small, and device downtime substantially shortens, to raw tar without negative
Face is rung, and has good market popularization value, solves the work in plant produced coal tar processing device for output qualification
Lead to the problem that sodium ions content is excessively high in coal tar when industry naphthalene product.
Detailed description of the invention
Fig. 1 is naphtalene oil dephenolize device technique transformation schematic diagram；
Fig. 2 is naphtalene oil dephenolize reaction equation figure.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Fig. 1 and Fig. 2 are please referred to, the embodiment of the present invention includes: increase in K-2203 tower top, lower part dephenolize naphtalene oil feeding line
Processing pipeline adc valve is connected to dephenolize naphtalene oil medial launder T-2206, during device is stopped work, naphtalene oil in K-2202 tower
It is flowed into the lower part K-2203 clarifying chamber by constantly raising liquid level, it is high using liquid level that indoor dephenolize naphtalene oil is clarified in the lower part K-2203
Degree difference and increased process pipelines valve are fed directly in dephenolize naphtalene oil medial launder T-2206, are sent to dephenolize naphtalene oil by pump
In slot, indoor dephenolize naphtalene oil is clarified by increased process pipelines in K-2203 tower top, is flowed into using liquid level difference de-
Then phenol naphtalene oil medial launder T-2206 is pumped in product dephenolize naphtalene oil slot by machine；Dephenolize naphtalene oil in the present embodiment everywhere
Emptying oil groove is not entered back into, is changed to be delivered in product dephenolize naphtalene oil slot, solve due to dephenolize naphtalene oil indirect belt containing sodium ion
Enter the problem of raw tar slot causes coal tar sodium ion to increase.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (4)
1. a kind of process for reducing coal tar sodium ions content characterized by comprising on K-2203 tower top, lower part
Dephenolize naphtalene oil feeding line increases process pipelines valve and is connected to device dephenolize naphtalene oil medial launder T-2206；Stopped in device
During work, naphtalene oil in K-2202 tower is set to be flowed into K-2203 tower lower part clarifying chamber, indoor dephenolize is clarified in K-2203 tower lower part
Naphtalene oil is flowed into dephenolize naphtalene oil medial launder, then is sent in product dephenolize naphtalene oil slot by pump；K-2203 tower top clarifying chamber
Interior dephenolize naphtalene oil is flowed into dephenolize naphtalene oil medial launder T-2206, is then pumped in dephenolize naphtalene oil slot by machine；Device is everywhere
Dephenolize naphtalene oil be delivered in product dephenolize naphtalene oil slot.
2. a kind of process for reducing coal tar sodium ions content according to claim 1, it is characterised in that: in device
During being stopped work, naphtalene oil is flowed into the lower part K-2203 clarifying chamber by way of raising liquid level in K-2202 tower.
3. a kind of process for reducing coal tar sodium ions content according to claim 1, it is characterised in that: the K-
2203 lower parts clarify indoor dephenolize naphtalene oil by liquid level difference and increase process pipelines valve in the way of be fed directly to it is de-
In phenol naphtalene oil medial launder.
4. a kind of process for reducing coal tar sodium ions content according to claim 1, it is characterised in that: the K-
It clarifies indoor dephenolize naphtalene oil and is flowed into dephenolize naphtalene oil using liquid level difference and increased process pipelines valve in 2203 tops
Between be sent in product dephenolize naphtalene oil slot by pump after slot T-2206 again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580856.5A CN109628122A (en) | 2018-12-24 | 2018-12-24 | A kind of process reducing coal tar sodium ions content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580856.5A CN109628122A (en) | 2018-12-24 | 2018-12-24 | A kind of process reducing coal tar sodium ions content |
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| Publication Number | Publication Date |
|---|---|
| CN109628122A true CN109628122A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811580856.5A Pending CN109628122A (en) | 2018-12-24 | 2018-12-24 | A kind of process reducing coal tar sodium ions content |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040200717A1 (en) * | 2003-04-03 | 2004-10-14 | Lund Grant James | Purification of phenols |
| CN101475817A (en) * | 2008-12-18 | 2009-07-08 | 中冶焦耐工程技术有限公司 | Distillate dephenolizing process and apparatus thereof |
| CN102021010A (en) * | 2010-12-12 | 2011-04-20 | 何巨堂 | Processing method of middle and low temperature coal tar |
| CN104232133A (en) * | 2013-06-21 | 2014-12-24 | 上海宝钢化工有限公司 | Method and device for reducing potassium and sodium ion content of coal tar |
| CN204198688U (en) * | 2014-10-20 | 2015-03-11 | 武汉钢铁(集团)公司 | A kind of device reducing dephenolize naphtalene oil phenol and phenates content |
| US9162952B2 (en) * | 2013-11-19 | 2015-10-20 | Uop Llc | Process for purifying products from coal tar |
| CN204910849U (en) * | 2015-08-31 | 2015-12-30 | 长岭炼化岳阳工程设计有限公司 | Tail gas tar separation recovery unit |
-
2018
- 2018-12-24 CN CN201811580856.5A patent/CN109628122A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040200717A1 (en) * | 2003-04-03 | 2004-10-14 | Lund Grant James | Purification of phenols |
| CN101475817A (en) * | 2008-12-18 | 2009-07-08 | 中冶焦耐工程技术有限公司 | Distillate dephenolizing process and apparatus thereof |
| CN102021010A (en) * | 2010-12-12 | 2011-04-20 | 何巨堂 | Processing method of middle and low temperature coal tar |
| CN104232133A (en) * | 2013-06-21 | 2014-12-24 | 上海宝钢化工有限公司 | Method and device for reducing potassium and sodium ion content of coal tar |
| US9162952B2 (en) * | 2013-11-19 | 2015-10-20 | Uop Llc | Process for purifying products from coal tar |
| CN204198688U (en) * | 2014-10-20 | 2015-03-11 | 武汉钢铁(集团)公司 | A kind of device reducing dephenolize naphtalene oil phenol and phenates content |
| CN204910849U (en) * | 2015-08-31 | 2015-12-30 | 长岭炼化岳阳工程设计有限公司 | Tail gas tar separation recovery unit |
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| PB01 | Publication | ||
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Application publication date: 20190416 |