CN1038426C - Semi-water-gas oil-removing method - Google Patents
Semi-water-gas oil-removing method Download PDFInfo
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- CN1038426C CN1038426C CN 95112489 CN95112489A CN1038426C CN 1038426 C CN1038426 C CN 1038426C CN 95112489 CN95112489 CN 95112489 CN 95112489 A CN95112489 A CN 95112489A CN 1038426 C CN1038426 C CN 1038426C
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- coke
- hot water
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- gas
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Abstract
The present invention relates to an oil removing method for semiwater gas. In order to prevent coke breakage, semiwater gas (1) for cooling and separating oil at a compressor outlet passes through a coke filter (2) from a top inlet to a bottom outlet. A water pipe (14) is connected to the upper part of the coke filter (2) from an outlet of a hot water circulating pump (9) matched with a saturation hot water tower, and waste hot water of 100 DEG C needing to be discharged from the saturation hot water tower is conveyed into a coke layer (3), and flows downwards in parallel along with gas. The discharged hot water in a non-parking state is used for washing coke every day, and the used hot water is automatically discharged from a discharging and spraying valve (4) at the bottom of the coke filter (2). The method has the advantages that the total solid in the saturation hot water tower is discharged, and the pulverized coke powder dust because of gas washing is discharged; the method also has the advantages of favorable oil removing effect of the coke, long service life, energy consumption saving and economy.
Description
The present invention relates to coal generating gas synthesis ammonia plant conversion section, particularly carbon monoxide under low temperature conversion process semi-water-gas oil-removing method.
In the synthesis ammonia plant conversion section; particularly adopt in the cobalt-molybdenum series catalyst carbon monoxide under low temperature conversion process (Chinese patent CN90103262.X); in order to prevent the saturated hot-water tower circulating hot water total solids level (index＜400ppm) that exceeds standard; in order to protect transformation catalyst; particularly the cobalt molybdenum is a low temperature shift catalyst; use inlet temperature at 150-200 ℃; under this temperature; the oils decomposition of not gasifying; cause catalyzer physics parcel; have a strong impact on its activity and life-span, therefore generally at saturator gas entry place coke filter being set removes compressor oil and coal tar.Method commonly used is to adorn a pipe core in the jar of dress coke, and inserts the bottom, semi-water gas by on enter, by pipe core to pot bottom, again by the bottom upwards through the coke layer oil removing, removed oily coal gas and went out to saturator from this jar upper side.This method shortcoming has three:
1. owing to gas percussion, coke is damaged easily, increases consumption, and the efflorescence thing is brought beds into catalyzer is also worked the mischief;
2, the coke life cycle is short, once, needed in two months to stop to change, or stop with steam regeneration, time-consuming, increase consumption, the coke result of use is very poor after the regeneration;
3, in the intermediary and later stages of coke life cycle, deoiling effect obviously reduces, and circulating hot water quantity discharged and number of times increase, and energy consumption increases.
Deoiling method process cost height therefore commonly used, deoiling effect is poor, and the coke utilization ratio is low, particularly in the carbon monoxide under low temperature conversion process.
The objective of the invention is to overcome above-mentioned deoiling method shortcoming, a kind of new semi-water-gas oil-removing method is provided, this method can prevent the coke breakage effectively, can utilize the discharging spent hot water to clean coke, prolongs coke work-ing life, saves energy consumption, reduces process cost.
Deoiling method of the present invention is that compressor outlet (0.75-2.1MPa) divides oily semi-water gas through cooling, for preventing that the coke breakage from going out through the coke filter coke layer under enterprising, every day under dead ship condition regularly with the spent hot water with coal gas and stream and clean coke layer down, discharge automatically from the hydrophobic showering guilding valve in coke filter bottom with hot water later.
The diameter of coke filter is by linear velocity＜0.15 meter per second design.The spent hot water need discharge～100 ℃ of water for saturated hot-water tower.Method is that the hot water circulation pump discharge from the saturated hot-water tower adapted connects a water pipe to coke filter top, around here pressure reduction～4 kilograms per centimeter
2, with saturated hot-water tower need discharge～100 ℃ of spent hot waters send coke layer to, with coal gas and stream and descend, discharge from the hydrophobic showering guilding valve of filter bottom again.
Advantage of the present invention is to utilize the discharging spent hot water routine cleaning coke that do not stop every day, has both discharged the total solids in the saturated hot-water tower, has discharged again because of air scour atomizing coke dust, makes that coke is long-term to keep high deoiling effect; Do not stop and clean coke and can exempt from the financial loss of stopping and causing, saved regeneration with steam or change the required expense of coke; Reclaim discharging hot water heat energy.According to empirical Calculation (with 8 kilograms per centimeter
2Transformation system, 30,000 tons of synthetic ammonia/yearly capacity meters) hot water of every discharging loses about 200 kg of vapor, discharges loss steam 1000-1200 kilogram every day 5-6 time, calculates by 85% rate of recovery, and every day of the present invention is recyclable～900 kg of vapor.
Fig. 1 is the example flow chart of this semi-water-gas oil-removing method.
From the cooling of two sections on compressor divide that oil comes in semi-water gas 1, advance from coke filter 2 tops, after coke layer 3 filtration oil removings, come out into saturator 5 bottoms by strainer 2 lower side, go out from saturator top through humidification, the hot water that hot-water tower 6 comes out is delivered to the top of going into saturator 5 after well heater 13 and 12 heat exchanges of conversion gas by circulating hot-water pump 9, circulating hot-water pump 9 exit discharge of wastewater mouths 10 have connect a water pipe 14 above the coke layer 3 of coke filter 2 inside, the spent hot water that saturated hot-water tower will discharge is regularly through valve 11, pipeline 14 is delivered to coke filter 2 tops, send coke layer 3 to, also flow and the following coke layer 3 that cleans with dried semi-water gas 1, by 4 dischargings of the hydrophobic showering guilding valve in strainer 2 bottoms, the 7th, saturated hot-water tower soft water replenishes mouthful, the gas that hot-water tower the comes out well heater 8 that anhydrates.
Total lts workshop section of Jiangsu factory adopts deoiling method of the present invention, because deoiling effect is good, only need discharge cycle hot water every day is 1-2 time, clean the coke filter coke every day 1-2 time, coke filtration uses half a year and does not change, the breakage of generation, promulgated by the ministries or commissions of the Central Government＜400ppm standard that the circulating hot water solid content meets Chinese chemical industry.Catalyst activity is intact, and desired result has been received in this invention.
Claims (1)
1, a kind of semi-water-gas oil-removing method, it is characterized in that compressor outlet goes out through coke filter (2) coke layer (3) to filter oil removing under the semi-water gas (1) of cooling branch oil is enterprising, under dead ship condition not, regularly utilize every day the spent hot water to clean coke layer (3) under with coal gas and stream interface, automatically discharge from coke filter (2) the hydrophobic showering guilding valve in bottom (4) again with hot water later, filter linear velocity＜0.15 meter per second in its coke filter, the spent hot water discharges～100 ℃ of spent hot waters for saturated hot-water tower, and hot water circulating pump is exported to pressure reduction～4 kilograms per centimeter on the coke filter
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95112489 CN1038426C (en) | 1995-10-16 | 1995-10-16 | Semi-water-gas oil-removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95112489 CN1038426C (en) | 1995-10-16 | 1995-10-16 | Semi-water-gas oil-removing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1125251A CN1125251A (en) | 1996-06-26 |
| CN1038426C true CN1038426C (en) | 1998-05-20 |
Family
ID=5079561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95112489 Expired - Lifetime CN1038426C (en) | 1995-10-16 | 1995-10-16 | Semi-water-gas oil-removing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038426C (en) |
-
1995
- 1995-10-16 CN CN 95112489 patent/CN1038426C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1125251A (en) | 1996-06-26 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUASHUO SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: HUBEI CHEMICAL RESEARCH INSTITUTE |
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| CP01 | Change in the name or title of a patent holder |
Address after: Hubei Province, Wuhan City, Wuchang mountain Patentee after: Huashuo Technology Co., Ltd. Address before: Hubei Province, Wuhan City, Wuchang mountain Patentee before: Hubei Research Institute of Chemistry |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Semi-water-gas oil-removing method Effective date of registration: 20100907 Granted publication date: 19980520 Pledgee: Bank of Hankou, Limited by Share Ltd, Optics Valley branch Pledgor: Huashuo Technology Co., Ltd. Registration number: 2010990000869 |
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| CX01 | Expiry of patent term |
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| EXPY | Termination of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151106 Granted publication date: 19980520 Pledgee: Bank of Hankou Limited by Share Ltd Optics Valley branch Pledgor: Huashuo Technology Co., Ltd. Registration number: 2010990000869 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20151106 Registration number: 2010990000869 Pledgee after: Bank of Hankou Limited by Share Ltd Optics Valley branch Pledgee before: Bank of Hankou, Limited by Share Ltd, Optics Valley branch |