CN209205021U - Acetylene-formaldehyde process produces waste acid treatment system caused by 1,4- butanediol - Google Patents
Acetylene-formaldehyde process produces waste acid treatment system caused by 1,4- butanediol Download PDFInfo
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- CN209205021U CN209205021U CN201821849806.8U CN201821849806U CN209205021U CN 209205021 U CN209205021 U CN 209205021U CN 201821849806 U CN201821849806 U CN 201821849806U CN 209205021 U CN209205021 U CN 209205021U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The utility model relates to a kind of acetylene-formaldehyde process productions 1, waste acid treatment system caused by 4- butanediol, spent acid buffer tank is mainly connected to by its system with the inlet of reactor, reactor is connected to by spent acid feed channel with the air inlet of first grade scrubber, spent acid feed channel is connected to air pipeline, and first grade scrubber is connected to secondary scrubber；The liquid outlet of secondary scrubber bottom is connected to the circulation fluid entrance of the alkali liquor inlet of first grade scrubber and secondary scrubber respectively by the second level washing pump being mounted on second level washing liquid lines, the utility model mainly carries out neutralization reaction using carbide slag and spent acid, generate calcium sulfate and water, it is accompanied by the reaction of other calcium salts simultaneously, and then spent acid is decomposed, generated carbide slag is sold outside as cement plant raw material, and react the waste acid gas generated and further utilize lye counter current contacting washing, purifying, efficiently solve the intractable technical problem of waste acid liquid waste.
Description
Technical field
The utility model belongs to chemical technology field, in particular to gives up caused by a kind of acetylene-formaldehyde process production 1,4-butanediol
Sour processing system.
Background technique
The BDO device of acetylene-formaldehyde process production at present generates the spent acid of mass concentration about 80%, and spent acid takes take-away to handle more, this
Processing cost is higher, or even the fresh concentrated sulfuric acid price than buying is also high, and is ready that the production-operation unit of waste acid recovery is less,
Affect the normal operation of acetylene-formaldehyde process production 1,4- butanediol.
Utility model content
In order to overcome waste acid treatment caused by the production 1,4- butanediol of acetylene-formaldehyde process present in the above-mentioned prior art difficult
The problem of, the utility model provide it is a kind of by waste acid resource handle and at low cost, safety and environmental protection acetylene-formaldehyde process produce Isosorbide-5-Nitrae-
Waste acid treatment system caused by butanediol.
The technical scheme adopted by the utility model is
A kind of acetylene-formaldehyde process produces the waste acid treatment system of waste acid treatment technique caused by 1,4-butanediol, which includes
Spent acid buffer tank 1, reactor 3, first grade scrubber 4, secondary scrubber 7, air-introduced machine 6, spent acid pump 2, level-one washing pump 5 and second level
Washing pump 9, the spent acid buffer tank 1 are connected to the inlet of reactor 3 by the spent acid pump 2 being mounted on pipeline, are being reacted
Device 3 is connected to by spent acid feed channel 10 with the air inlet of first grade scrubber 4, and spent acid feed channel 10 is connected to air pipeline, level-one
The top of scrubbing tower 4 is connected to by the air-introduced machine 6 being mounted in level-one washing feed channel 12 with secondary scrubber 7；Level-one washing
The bottom of tower 4 is connected to by pipeline with sedimentation basin 8, and the water outlet of sedimentation basin 8 is by being mounted on level-one washing liquid lines 11
Level-one washing pump 5 is connected to the circulation fluid entrance of first grade scrubber 4；The liquid outlet of 7 bottom of secondary scrubber passes through installation
Second level washing pump 9 on second level washing liquid lines 14 is followed with the alkali liquor inlet of first grade scrubber 4 and secondary scrubber 7 respectively
The connection of ring liquid entrance.
It further limits, lye supply port is offered on the tower body of the secondary scrubber 7, lye supply port passes through installation
Lye pump on pipeline is connected to alkali device is mended.
It further limits, acetylene, oxygen content in-line analyzer is provided in the spent acid feed channel 10, with real-time detection
Acetylene content and oxygen content in pipeline, and then control the introduction volume of air.
Further limit, the system also includes condensing unit, the cooling water inlet of the condensing unit and reactor and
Cooling water outlet connection is no more than reactor temperature reactor cooling when highly exothermic in reaction process with chilled water
200 DEG C, waste acid gas temperature be no more than 90 DEG C.
Waste acid treatment system caused by the acetylene-formaldehyde process production 1,4- butanediol of the utility model mainly utilizes carbide slag
Neutralization reaction is carried out with spent acid, generates calcium sulfate and water, while being accompanied by the reaction of other calcium salts, and then spent acid is decomposed, institute
The carbide slag of generation further utilizes the washing of lye counter current contacting net as the waste acid gas sold outside the raw material of cement plant, and react generation
Change, so that acid gas be absorbed, efficiently solve the intractable technical problem of waste acid liquid waste, and reduce production cost,
Realize safe and environment-friendly, the low-cost processes of liquid wastes.
Detailed description of the invention
Fig. 1 is the waste acid treatment system schematic of the utility model.
Specific embodiment
The technical solution of the utility model is further described now in conjunction with drawings and examples, but the utility model
It is not limited only to following implementation situations.
Referring to Fig. 1, waste acid treatment system caused by the acetylene-formaldehyde process production 1,4-butanediol of the utility model is delayed by spent acid
Deposit tank 1, spent acid pumps 2, reactor 3, first grade scrubber 4, level-one washing pump 5, air-introduced machine 6, secondary scrubber 7, sedimentation basin 8, two
Grade washing pump 9, spent acid feed channel 10, level-one cleaning solution reflux line 11, level-one washing feed channel 12, second level washing compensation liquid pipe
Road 13 and second level cleaning solution reflux line 14, wherein spent acid buffer tank 1 is for collecting produced by acetylene-formaldehyde process production 1,4-butanediol
Spent acid, be connected to by the spent acid that is mounted on pipeline pump 2 with the inlet at the top of reactor 3, the top of reactor 3 also
Offer carbide slag entrance and waste acid gas outlet, offer waste residue outlet in the bottom of reactor 3, spent acid enter reactor 3 with
The carbide slag of addition reacts, and the carbide slag for generating sulfur acid calcium is directly discharged by waste residue outlet.The waste acid gas of reactor 3 exports
It is connected to by spent acid feed channel 10 with first grade scrubber 4, spent acid feed channel 10 is connected to air pipeline, using air to waste acid gas
Concentration be diluted.The tower body top of first grade scrubber 4 offers circulation fluid entrance and the outlet of level-one washing gas, in tower body
Middle part offers waste acid gas entrance and cleaning solution compensation liquid entrance, offers cleaning solution outlet, waste acid gas entrance in tower body bottom
It is connected to spent acid feed channel 10, level-one washs gas outlet and washs feed channel 12 and two air-introduced machines 6 by two-way level-one arranged side by side
The outlet of connection, air-introduced machine 6 is connected to by pipeline with secondary scrubber 7, and cleaning solution outlet is connected to by pipeline with sedimentation basin 8,
Wash cycle liquid is drained to sedimentation basin 8 to be separated by solid-liquid separation, the waste residue outlet that precipitation and separation goes out, the supernatant isolated passes through
Level-one washing pump 5 is extracted out, and a part is outer to drain into waste water treatment plant, and another part is flowed back through level-one cleaning solution reflux line 11, followed
Ring liquid reflux inlet enters in first grade scrubber 4, with waste acid gas counter current contacting, carries out washing, purifying to waste acid gas.It is washed through level-one
It washs purified waste acid gas to enter in secondary scrubber 7 through 6 air inducing of air-introduced machine, the tower body top of secondary scrubber 7, which offers, to be followed
Ring liquid reflux inlet and the outlet of second level washing gas, offer level-one washing gas entrance and lye supply port in the middle part of tower body,
Tower body bottom offers cleaning solution outlet, and level-one washing gas entrance is connected to the outlet conduit of air-introduced machine 6, and cleaning solution outlet passes through
Second level washing pump 9 is extracted rear portion out and is entered through the circulation fluid reflux inlet of second level cleaning solution reflux line 14, secondary scrubber 7
In secondary scrubber 7, washing, purifying is contacted with the level-one washing gas countercurrent in secondary scrubber 7, another part is washed using second level
It washs compensation liquid pipe road 13 to be connected to the lye supply port of first grade scrubber 4, the gas of secondary washing purification directly puts idle discharge.Two
The lye supply port of grade scrubbing tower 7 is connected to by the lye pump being mounted on pipeline with alkali device is mended, when alkali in secondary scrubber 7
When liquid concentration declines, starting lye pump supplements lye into secondary scrubber 7.
It further illustrates, in order to avoid acetylene content causes pipe explosion more than explosion limit in spent acid feed channel 10
Danger is equipped with acetylene, oxygen content in-line analyzer, in spent acid feed channel 10 with the acetylene content in real-time detection pipeline
And oxygen content, and then control the introduction volume of air.
Further illustrate, above-mentioned reactor can also be connected to condensing unit, reactor be it is jacket structured, on reactor
Cooling water inlet and cooling water outlet are opened up, condensing unit is gone out with the cooling water inlet of reactor and cooling water respectively by pipeline
Mouthful connection, when highly exothermic in reaction process, with chilled water it is cooling to reactor make reactor temperature be no more than 200 DEG C, it is useless
Acid gas temperature is no more than 90 DEG C.
It further illustrating, above-mentioned reactor can also carry out waterpipe with industry and be connected to, when carbide slag generation dust is added,
It can be to penetrating industry water in reactor.
Waste acid treatment caused by acetylene-formaldehyde process production 1,4-butanediol is realized with above-mentioned waste acid treatment system, and concrete technology is such as
Under:
(1) by acetylene-formaldehyde process produce 1,4- butanediol caused by spent acid by spent acid pump 2 be pumped into reactor 3 pass through spray head it is equal
It is even to spray on the carbide slag being added in the reactor, it is stirred to react under room temperature, condition of normal pressure, the electricity of generated sulfur acid calcium
Rock ballast outlet, and react the waste acid gas generated and be drained to first grade scrubber 4；
Main reaction: H2SO4+Ca(OH)2→CaSO4+H2O
Side reaction: CaO+2H2O=Ca (OH)2
CaC2+2H2O=Ca (OH)2+C2H2↑
CaS+2H2O=Ca (OH)2+H2S↑
Ca3P2+6H2O=3Ca (OH)2+2PH3↑
Ca2Si+4H2O=2Ca (OH)2+SiH4↑
Ca3As2+6H2O=3Ca (OH)2+2AsH3↑
Ca3N2+6H2O=3Ca (OH)2+2NH3↑
Since reaction is exothermic reaction, using the condensing unit being connected to reactor to reactor 3 during reaction
Collet in, be passed through 5 DEG C of chilled waters in agitating shaft and carry out cooling downs, with maintain the temperature of reactor 3 be no more than 200 DEG C, it is useless
Acid gas is no more than 90 DEG C.Further for the Dust Capacity in control reaction process, by spray head to reaction during reaction
Industry water is sprayed into device.
(2) Dilution air, the introducing of air is added in the waste acid gas of step (1) during being drained to first grade scrubber 4
Amount is adjusted according to the size of acetylene in waste acid gas, oxygen content, guarantees acetylene content in its explosive range lower limit hereinafter, keeping away
Exempt from the acetylene content generated in reactor 3 more than acetylene explosion limit；
(3) level-one is carried out using the lye counter current contacting of mass concentration about 5~10% into the waste acid gas of first grade scrubber 4
Washing, purifying, the circulation alkali liquor for absorbing pernicious gas in waste acid gas enter the precipitating of sedimentation basin 8, waste residue and step (1) of precipitating
Outlet after the carbide slag mixing of generated sulfur acid calcium, supernatant are used as into first grade scrubber 4 by level-one washing pump 5 and are washed
Circulation fluid is washed, drains into sewage treatment outside when wash cycle liquid concentration is lower than 5%, and passes through 9 supplement lye of secondary cycle pump；It washes
It washs purified gas and is delivered to progress second level washing, purifying processing in secondary scrubber 7；
It (4) is that 15~25% lye counter current contactings carry out second level using mass concentration into the waste acid gas of secondary scrubber 7
Washing, purifying, the circulation alkali liquor for absorbing pernicious gas in waste acid gas is used as by second level washing pump 9 to secondary scrubber 7 to be washed
Circulation fluid drains into first grade scrubber 4 when circulation fluid concentration is lower than 15%, and is 25% by lye pump additional mass concentration
Lye, the gas after washing, purifying put idle discharge.
The waste acid treatment system of the utility model efficiently solves acid pickle caused by acetylene-formaldehyde process production 1,4- butanediol
The intractable technical problem of body waste, and realize waste acid resourceization processing, at low cost, Environmental Safety.
Claims (4)
1. a kind of waste acid treatment system of waste acid treatment technique caused by acetylene-formaldehyde process production 1,4-butanediol, which is characterized in that
The system includes spent acid buffer tank (1), reactor (3), first grade scrubber (4), secondary scrubber (7), air-introduced machine (6), spent acid
(2), level-one washing pump (5) and second level washing pump (9) are pumped, the spent acid buffer tank (1) is pumped by the spent acid being mounted on pipeline
(2) it is connected to the inlet of reactor (3), reactor (3) passes through the air inlet of spent acid feed channel (10) and first grade scrubber (4)
Connection, spent acid feed channel (10) are connected to air pipeline, and feed channel is washed by being mounted on level-one in the top of first grade scrubber (4)
(12) air-introduced machine (6) on is connected to secondary scrubber (7)；The bottom of first grade scrubber (4) is connected by pipeline and sedimentation basin (8)
Logical, the water outlet of sedimentation basin (8) passes through the level-one washing pump (5) and first grade scrubber that are mounted on level-one washing liquid lines (11)
(4) circulation fluid entrance connection；The liquid outlet of secondary scrubber (7) bottom is by being mounted on second level washing liquid lines (14)
On second level washing pump (9) connect respectively with the alkali liquor inlet of first grade scrubber (4) and the circulation fluid entrance of secondary scrubber (7)
It is logical.
2. waste acid treatment system according to claim 1, which is characterized in that opened on the tower body of the secondary scrubber (7)
Equipped with lye supply port, lye supply port is connected to by the lye pump being mounted on pipeline with alkali device is mended.
3. waste acid treatment system according to claim 1, which is characterized in that be provided with second on the spent acid feed channel (10)
Alkynes, oxygen content in-line analyzer.
4. described in any item waste acid treatment systems according to claim 1~3, which is characterized in that the system also includes condensations
Device, the condensing unit are connected to the cooling water inlet of reactor and cooling water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849806.8U CN209205021U (en) | 2018-11-09 | 2018-11-09 | Acetylene-formaldehyde process produces waste acid treatment system caused by 1,4- butanediol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849806.8U CN209205021U (en) | 2018-11-09 | 2018-11-09 | Acetylene-formaldehyde process produces waste acid treatment system caused by 1,4- butanediol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209205021U true CN209205021U (en) | 2019-08-06 |
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ID=67458873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821849806.8U Active CN209205021U (en) | 2018-11-09 | 2018-11-09 | Acetylene-formaldehyde process produces waste acid treatment system caused by 1,4- butanediol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209205021U (en) |
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2018
- 2018-11-09 CN CN201821849806.8U patent/CN209205021U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210910 Address after: 715400 min Cun Industrial Park, Hancheng City, Weinan City, Shaanxi Province Patentee after: Hancheng black cat Chemical Co.,Ltd. Address before: 715400 Hancheng Coal Chemical Industrial Park, Weinan City, Shaanxi Province Patentee before: SHAANXI HEIMAO COKING Co.,Ltd. |