CN109663387A - A kind of degassing deodorizing methods of acetylene unit sooty water - Google Patents
A kind of degassing deodorizing methods of acetylene unit sooty water Download PDFInfo
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- CN109663387A CN109663387A CN201710957711.1A CN201710957711A CN109663387A CN 109663387 A CN109663387 A CN 109663387A CN 201710957711 A CN201710957711 A CN 201710957711A CN 109663387 A CN109663387 A CN 109663387A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0047—Atomizing, spraying, trickling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0005—Degasification of liquids with one or more auxiliary substances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physical Water Treatments (AREA)
- Gas Separation By Absorption (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention discloses a kind of degassing deodorizing methodss of acetylene unit sooty water.The described method includes: being sprayed into stripping tower middle and upper part, gas stripping gas enters in tower from stripping tower middle and lower part after (1) sooty water pressurization to be processed；Gas stripping gas is the concentrate tail gas from concentrate workshop section；(2) sooty water that repeats itself uses in acetylene unit enters the water spray section of stripper-overhead, and the gas stripping gas after air lift enters vacuum pump suction tank middle and lower part from stripper-overhead by after sooty water spraying cooling；(3) sooty water is sprayed from vacuum pump suction tank top, and the gas stripping gas after the air lift of stripper-overhead discharge is further cooled down in tank；Gas stripping gas is discharged by vacuum pumping to cracking gas general pipeline in tank deck；(4) sooty water of vacuum pump sucking pot bottom discharge is passed through the sooty water after stripping tower tower reactor and tower reactor degassing together after being pressurized, and is sent into subsequent carbon black sink and is further processed.The present invention improves the degasifying effect to acetylene unit sooty water, solves environmental issue.
Description
Technical field
The present invention relates to natural gas technical fields, further say, are to be related to the degassing of acetylene unit sooty water a kind of to remove
Smelly method.
Background technique
In gas by partial oxidation of natural acetylene technique, the main reaction in partial oxidation reactor is that natural gas decomposes generation acetylene and hydrogen
Gas, this reaction need to complete within the very short time, and the acetylene that overlong time generates will continue to resolve into carbon black and hydrogen.For
Effective control reaction time, the mode for taking water spray to be quenched terminate reaction, shower water when acetylene reaches maximum output in time
Carbon black portion washes in cracking gas can be got off, form sooty water.While natural gas decomposes, also occurred that in partial oxidation reactor
Some other side reactions, the by-product of generation include carbon monoxide, carbon dioxide, hydrogen, advanced alkynes etc., these components and
Acetylene can be dissolved in sooty water on a small quantity.Before being sent by partial oxidation reactor to carbon black sink and being handled by sooty water, need as far as possible
The above-mentioned cracking gas component dissolved in removing sooty water, otherwise the solution gas in water enters subsequent sooty water processing section and will cause
Environmental pollution, and bring security risk.
The content of acetylene is not high in acetylene furnace cracking gas, needs to recycle acetylene from gaseous mixture by concentrate and comes out,
Concentrate workshop section, gaseous mixture are separated into three kinds of fractions, i.e. product acetylene, advanced alkynes and concentrate tail gas, and wherein concentrate tail gas is main
By gas compositions such as hydrogen and carbon monoxide.Patent (publication number CN102241421A) provides solution gas in a kind of sooty water
Removal methods, this method using concentrate tail gas as gas stripping gas, in degassing tank to the gases such as the acetylene dissolved in sooty water into
Row removing, small on integrated artistic influence using invention technology described above, operating cost is lower, and degasifying effect is desorbed more naturally and mentioned
It rises, but gas stripping gas is contacted with sooty water and is not enough in degassing tank, still there is more cracking gas group in the sooty water after degassing
Point, especially diacetylene component is difficult to remove, and still there is large quantity of exhaust gas to emerge in subsequent sooty water processing section, and give an offensive smell,
Environment is polluted, the requirement of increasingly strict environmental protection standard is unable to satisfy.
Summary of the invention
To solve the problem in the prior art, the present invention provides a kind of degassing deodorization sides of acetylene unit sooty water
Method.Degassing process is transformed, the degasifying effect to acetylene unit sooty water is improved, solves environmental issue.
In order to achieve the above object, the technical solution adopted by the present invention is that: a kind of degassing deodorization side of acetylene unit sooty water
Method, it is characterized in that being de-gassed in negative pressure stripping tower to sooty water using gas stripping gas；The gas stripping gas is from device concentrate
The concentrate tail gas of workshop section, the stripping tower are packed tower, and are respectively set in tower top and the vacuum pump being connected with tower sucking tank deck
Sooty water spray section cools down gas stripping gas.
The object of the present invention is to provide a kind of degassing deodorizing methodss of acetylene unit sooty water.
The described method includes:
(1) it after sooty water pressurization to be processed, is sprayed into stripping tower middle and upper part, gas stripping gas enters tower from stripping tower middle and lower part
In；
The gas stripping gas is the concentrate tail gas from concentrate workshop section；
(2) sooty water that repeats itself uses in acetylene unit enters the water spray section of stripper-overhead, the gas after air lift
After proposing the cooling of micronex water spray, enter vacuum pump suction tank middle and lower part from stripper-overhead
(3) 35 DEG C of sooty waters are sprayed from vacuum pump suction tank top, by the gas after the air lift of stripper-overhead discharge
Gas is mentioned further to cool down in tank；Gas stripping gas is discharged by vacuum pumping to cracking gas general pipeline in tank deck；
(4) sooty water of vacuum pump sucking pot bottom discharge is passed through the sooty water one after stripping tower tower reactor and tower reactor degassing
It rises after being pressurized, is sent into subsequent carbon black sink and is further processed.
Wherein, preferably:
The ratio between gas stripping gas and the mass flow of sooty water to be processed are 1:(900~1000 in step (1)).
The ratio between mass flow of sooty water and gas stripping gas that tower top sprays in step (2) is (110~120): 1.
The ratio between mass flow of sooty water and gas stripping gas that tank deck sprays in step (3) is (9~11): 1.
The operating pressure of stripping tower is in -0.055~-0.040MPa.
Stripping tower tower top air lift temperature degree is not less than 45 DEG C.
Following technical scheme specifically can be used in the present invention:
Specific step is as follows:
Step 1: the sooty water to be processed from partial oxidation reactor sprays after the pressurization of carbon black water pump into stripping tower middle and upper part,
Gas stripping gas (the concentrate tail gas from concentrate workshop section) enters in tower from stripping tower middle and lower part, and the introducing of gas stripping gas is reduced wait locate
The partial pressure for managing the organic hydrocarbons such as acetylene in sooty water, so that organic hydrocarbon be made to strip out from sooty water to be processed.
Step 2: the sooty water that the temperature that repeats itself uses in acetylene unit is 35 DEG C enters the water spray of stripper-overhead
Section is drenched, the gas stripping gas after air lift enters vacuum pump suction tank middle and lower part from stripper-overhead by after 35 DEG C of sooty water spraying coolings.
Step 3: 35 DEG C of sooty waters are sprayed from vacuum pump suction tank top, after the air lift of stripper-overhead discharge
Gas stripping gas further cooled down in tank；Vacuum pump suction tank is connected with vacuum pump, tank deck be discharged gas stripping gas by vacuum pumping extremely
Cracking gas general pipeline, and control with this operating pressure of stripping tower.
Step 4: the sooty water of vacuum pump sucking pot bottom discharge is passed through the carbon black after stripping tower tower reactor and tower reactor degassing
Water after the pressurization of sooty water booster pump, is sent into subsequent carbon black sink and is further processed together.
Preferably, the ratio between gas stripping gas and the mass flow of sooty water to be processed are 1:(900~1000 in step 1).
Preferably, the ratio between mass flow of 35 DEG C of sooty waters that tower top sprays in step 2 and gas stripping gas for (110~
120): 1.
Preferably, the ratio between mass flow of 35 DEG C of sooty waters that tank deck sprays in step 3 and gas stripping gas is (9~11): 1；
The operating pressure of stripping tower is controlled in -0.055~-0.040MPa (gauge pressure) by vacuum pump pumping.
By the dosage for the sooty water that adjusting tower top spray is drenched, tower top air lift temperature degree after cooling is controlled not less than 45 DEG C.
The present invention have it is following the utility model has the advantages that
(1) for the concentrate tail gas that selection device concentrate of the present invention workshop section generates as gas stripping gas, the concentrate tail gas after air lift can
To be routed directly to cracking gas general pipeline, increase follow-up processing flow without additional, small, saving operating cost is influenced on integrated artistic.
(2) air lift process of the present invention carries out in packed tower, and gas stripping gas can come into full contact with sooty water, and stripping tower is adopted
With negative-pressure operation, be conducive to the removing of cracking gas in sooty water, it is especially very significant to the promotion of diacetylene removal effect, it obtains
Good degasifying effect is the requirement that can reach correlative link and protect standard using less amount of gas stripping gas, what device itself generated
Concentrate tail gas can meet gas stripping gas dosage demand, without additionally supplementing other gas stripping gas.
(3) cooling gas stripping gas by the way of tank deck directly sprays is sucked in stripper overhead and vacuum pump using sooty water, protected
Under the premise of demonstrate,proving higher degassing rate, reduce the saturated water content in top gaseous phase by cooling, to reduce vacuum pump
Inspiratory capacity, reduces the power of vacuum pump, and it is excessively high to avoid temperature at vacuum pump outlet；Device repeats itself is utilized in shower water
The 35 DEG C of sooty waters used, without additionally using recirculated water, and the method directly sprayed (is cooled with circulating water with indirect cooling method
Device cooling tower top gas) it compares, water consumption very little is sprayed, low energy consumption.
Detailed description of the invention
Fig. 1 is the process schematic representation of the degassing deodorizing methods of the sooty water of embodiment according to the present invention.
Fig. 2 is the process schematic representation of the degassing deodorizing methods of the sooty water of a comparative example of the invention.
Description of symbols:
1: sooty water to be processed；2: carbon black water pump；3: stripping tower；4: gas stripping gas (the concentrate tail gas from concentrate workshop section)；
5: tower top sprays 35 DEG C of sooty waters；6: the gas stripping gas after air lift；7: vacuum pump suction tank；8: gas stripping gas is discharged in tank deck；9: vacuum
Pump；10: tank deck sprays 35 DEG C of sooty waters；11: sooty water is discharged in tank bottom；12: sooty water booster pump；13: the charcoal after tower reactor degassing
Heisui River.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
Embodiment
One embodiment of the invention is explained below in conjunction with Fig. 1.
Acetylene unit 1 property of sooty water to be processed and composition: 78 DEG C of temperature, pressure 0.005MPa (gauge pressure), flow 300t/
H, content of carbon black 0.2g/L, cracking gas total content 0.0034wt%, wherein the group of content higher (> 0.0001wt%) is divided into an oxygen
Change three kinds of carbon (0.00027wt%), acetylene (0.00254wt%) and diacetylene (0.00037wt%), unit wt% refers to quality
Percentage.
4 property of concentrate tail gas and composition from acetylene unit concentrate workshop section: 15 DEG C of temperature, pressure 0.09MPa (gauge pressure),
The group of content higher (> 4v%) is divided into hydrogen (61.68v%), carbon monoxide (27.18v%), three kinds of methane (4.91v%), this
Also refer to percent by volume containing components, unit v% such as a small amount of acetylene (0.04v%) outside.
As shown in Figure 1, the degassing deodorization implementation steps of above-mentioned sooty water to be processed 1 are as follows:
Step 1: the sooty water to be processed 1 from partial oxidation reactor sprays after the pressurization of carbon black water pump 2 into 3 middle and upper part of stripping tower
Leaching, gas stripping gas (the concentrate tail gas from concentrate workshop section) 4 is after pressure reducing valve is decompressed to 0.005MPa (gauge pressure) under in stripping tower 3
Portion enters in tower, mass flow 0.321t/h, volume flow 600Nm3/ h, unit Nm3/ h refers to standard cubic meter/small
When, the introducing of gas stripping gas 4 reduces the partial pressure of the organic hydrocarbons such as acetylene in sooty water 1 to be processed, to make organic hydrocarbon to be processed
It is stripped out in sooty water 1.
Step 2: the sooty water 5 that the temperature that repeats itself uses in acetylene unit is 35 DEG C enters the water at 3 top of stripping tower
Spray section, flow 36.2t/h, the gas stripping gas 6 after air lift, to 45 DEG C, are pushed up by 35 DEG C of 5 spraying coolings of sooty water from stripping tower 3
Portion enters 7 middle and lower part of vacuum pump suction tank.
Step 3: flow is that 35 DEG C of sooty waters 10 of 3.0t/h are sprayed from 7 top of vacuum pump suction tank, by stripping tower
Gas stripping gas 6 (mass flow 0.446t/h) after the air lift that 3 tops are discharged, is cooled further to 40 DEG C in tank；Vacuum pump
Suction tank 7 is connected with vacuum pump 9, and tank deck discharge gas stripping gas 8 is sent by vacuum pump 9 to cracking gas general pipeline, and controls stripping tower 3 with this
Operating pressure be -0.050MPa (gauge pressure).
Step 4: after the sooty water 11 of 7 bottom of vacuum pump suction tank discharge is passed through 3 tower reactor of stripping tower and tower reactor degassing
Sooty water after the pressurization of sooty water booster pump 12, is sent into subsequent carbon black sink and is further processed together.
Sooty water after above-mentioned steps deaerate, acetylene removal rate are 99.87%, and diacetylene removal efficiency is 90.38%, can
To meet environment protection emission requirement.Vacuum pump outlet gas stripping gas temperature is 119 DEG C, and sooty water booster pump outlet carbon black coolant-temperature gage is 73
℃。
Comparative example
A comparison scheme of the invention is explained below in conjunction with Fig. 2.
Acetylene unit 1 property of sooty water to be processed and composition: 78 DEG C of temperature, pressure 0.005MPa (gauge pressure), flow 300t/
H, content of carbon black 0.2g/L, cracking gas total content 0.0034wt%, wherein the group of content higher (> 0.0001wt%) is divided into an oxygen
Change three kinds of carbon (0.00027wt%), acetylene (0.00254wt%) and diacetylene (0.00037wt%).
4 property of concentrate tail gas and composition from acetylene unit concentrate workshop section: 15 DEG C of temperature, pressure 0.09MPa (gauge pressure),
The group of content higher (> 4v%) is divided into hydrogen (61.68v%), carbon monoxide (27.18v%), three kinds of methane (4.91v%), this
Outside also containing components such as a small amount of acetylene (0.04v%).
As shown in Fig. 2, the degassing deodorization implementation steps of above-mentioned sooty water to be processed 1 are as follows:
Step 1: the sooty water to be processed 1 from partial oxidation reactor sprays after the pressurization of carbon black water pump 2 into 3 middle and upper part of stripping tower
Leaching, gas stripping gas (the concentrate tail gas from concentrate workshop section) 4 is after pressure reducing valve is decompressed to 0.02MPa (gauge pressure) under in stripping tower 3
Portion enters in tower, volume flow 600Nm3It is organic to reduce acetylene etc. in sooty water 1 to be processed for/h, the introducing of gas stripping gas 4
The partial pressure of hydrocarbon, so that organic hydrocarbon be made to strip out from sooty water 1 to be processed, the operating pressure of stripping tower 3 is 0.009MPa (table
Pressure).
Step 2: the gas stripping gas 6 after air lift is discharged at the top of stripping tower 3, is sent to cracking gas general pipeline.
Step 3: the sooty water 13 after tower reactor degassing is sent into subsequent carbon black sink by potential difference and is further processed.
Sooty water after above-mentioned steps deaerate, acetylene removal rate are 99.51%, and diacetylene removal efficiency is 27.97%.
The removal efficiency that can be seen that the diacetylene of the embodiment of the present invention from the data of embodiment and comparative example may be up to
90.38%, the significantly larger than removal efficiency of comparative example, fully meet environmental requirement.
Claims (6)
1. a kind of degassing deodorizing methods of acetylene unit sooty water, it is characterised in that the described method includes:
(1) it after sooty water pressurization to be processed, is sprayed into stripping tower middle and upper part, gas stripping gas enters in tower from stripping tower middle and lower part；
The gas stripping gas is the concentrate tail gas from concentrate workshop section；
(2) sooty water that repeats itself uses in acetylene unit enters the water spray section of stripper-overhead, the gas stripping gas after air lift
After sooty water spraying cooling, enter vacuum pump suction tank middle and lower part from stripper-overhead；
(3) sooty water is sprayed from vacuum pump suction tank top, by the gas stripping gas after the air lift of stripper-overhead discharge in tank
Interior further cooling；Gas stripping gas is discharged by vacuum pumping to cracking gas general pipeline in tank deck；
(4) sooty water that the sooty water of vacuum pump sucking pot bottom discharge is passed through after stripping tower tower reactor and tower reactor degassing passes through together
After pressurization, it is sent into subsequent carbon black sink and is further processed.
2. the degassing deodorizing methods of acetylene unit sooty water as described in claim 1, it is characterised in that:
The ratio between gas stripping gas and the mass flow of sooty water to be processed are 1:(900~1000 in step (1)).
3. the degassing deodorizing methods of acetylene unit sooty water as claimed in claim 2, it is characterised in that:
The ratio between mass flow of sooty water and gas stripping gas that tower top sprays in step (2) is (110~120): 1.
4. the degassing deodorizing methods of acetylene unit sooty water as claimed in claim 3, it is characterised in that:
The ratio between mass flow of sooty water and gas stripping gas that tank deck sprays in step (3) is (9~11): 1.
5. the degassing deodorizing methods of acetylene unit sooty water as described in claim 1, it is characterised in that:
The operating pressure of stripping tower is -0.055~-0.040MPa.
6. the degassing deodorizing methods of acetylene unit sooty water as claimed in claim 5, it is characterised in that:
Stripping tower tower top air lift temperature degree is not less than 45 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710957711.1A CN109663387B (en) | 2017-10-16 | 2017-10-16 | Degassing and deodorizing method for carbon black water of acetylene device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710957711.1A CN109663387B (en) | 2017-10-16 | 2017-10-16 | Degassing and deodorizing method for carbon black water of acetylene device |
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| CN109663387A true CN109663387A (en) | 2019-04-23 |
| CN109663387B CN109663387B (en) | 2021-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405427A (en) * | 2022-01-11 | 2022-04-29 | 四川艾普热能科技有限公司 | Low-energy-consumption cracking device and method for preparing acetylene from natural gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1485190A1 (en) * | 2002-03-12 | 2004-12-15 | Basf Aktiengesellschaft | Method for deacidifying a fluid stream and washing liquid used in such a method |
| CN102241421A (en) * | 2010-05-14 | 2011-11-16 | 中国石油化工集团公司 | Method for removing dissolved gases from carbon black water |
| CN103342399A (en) * | 2013-08-01 | 2013-10-09 | 新疆中泰化学股份有限公司 | Stripping system and stripping method for cleaning waste sodium hypochlorite in production of acetylene by virtue of calcium carbide method |
-
2017
- 2017-10-16 CN CN201710957711.1A patent/CN109663387B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1485190A1 (en) * | 2002-03-12 | 2004-12-15 | Basf Aktiengesellschaft | Method for deacidifying a fluid stream and washing liquid used in such a method |
| CN102241421A (en) * | 2010-05-14 | 2011-11-16 | 中国石油化工集团公司 | Method for removing dissolved gases from carbon black water |
| CN103342399A (en) * | 2013-08-01 | 2013-10-09 | 新疆中泰化学股份有限公司 | Stripping system and stripping method for cleaning waste sodium hypochlorite in production of acetylene by virtue of calcium carbide method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405427A (en) * | 2022-01-11 | 2022-04-29 | 四川艾普热能科技有限公司 | Low-energy-consumption cracking device and method for preparing acetylene from natural gas |
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