CN209259704U - Rely on the device of methyl alcohol product installation production carbon dioxide - Google Patents
Rely on the device of methyl alcohol product installation production carbon dioxide Download PDFInfo
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- CN209259704U CN209259704U CN201821940531.9U CN201821940531U CN209259704U CN 209259704 U CN209259704 U CN 209259704U CN 201821940531 U CN201821940531 U CN 201821940531U CN 209259704 U CN209259704 U CN 209259704U
- Authority
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- China
- Prior art keywords
- carbon dioxide
- tower
- methyl alcohol
- alcohol product
- product installation
- Prior art date
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 120
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 67
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 28
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 19
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 19
- 238000001179 sorption measurement Methods 0.000 claims abstract description 13
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 5
- 239000003507 refrigerant Substances 0.000 claims abstract description 5
- 239000002808 molecular sieve Substances 0.000 claims description 8
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 17
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 36
- 239000007788 liquid Substances 0.000 description 19
- 239000000047 product Substances 0.000 description 16
- 238000001816 cooling Methods 0.000 description 9
- 238000000746 purification Methods 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 241000790917 Dioxys <bee> Species 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000002631 hypothermal effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model proposes the devices for relying on methyl alcohol product installation production carbon dioxide, including sequentially connected unstripped gas tower, pre- desulfurizing tower, adsorption tower, compressor set, recooler, drying tower, carbon dioxide condensing device, purifying column, product spherical tank；The carbon dioxide condensing device uses propylene for refrigerant, and propylene is from propylene compressor in methyl alcohol product installation；The new process of use, new technology are in traditional mature technical foundation, and further progress process optimization reduces rotating machinery quantity to the greatest extent, to reduce power consumption；The characteristics of according to this process flow, rationally carries out the arrangement of process equipment, rationally makes material artesian flow using potential difference, to reduce power consumption；CO2Condenser no longer adds specific refrigeration ice maker, thus greatly reduces power consumption and circulating cooling water consumption, and stable, reliable using the refrigerating capacity more than needed of propylene compressor processed.
Description
Technical field
The utility model relates to methyl alcohol product installation technical fields, and low-temp methanol is especially washed I sections of unit reabsorber
Tail gas recycle simultaneously produces liquid CO 2, specially the device of support methyl alcohol product installation production liquid CO 2.
Background technique
Today's society, a large amount of discharges of GHG carbon dioxide have been accepted as to be cause global warming main
One of reason；It is counted according to authoritative institution, the CO2 emissions of China are considerably beyond more than 80 hundred million tons at present；In chemical work
The devices such as the carbon dioxide gas of a large amount of higher concentrations, such as ammonia from coal, coal synthesis ammonia are produced in industry production process, are returned
These carbon dioxide are received, not only can be reduced the discharge amount of carbon dioxide, are reduced since atmospheric carbon dioxide levels steeply rise
And the environmental problem caused, and the carbon dioxide of recycling recycling can also be generated into certain economic benefit.As production fills
It sets more and more large-scale, recycles the tail gas of these devices with a kind of relatively simple method, while producing recycling liquid
Body carbon dioxide seems more and more urgent and important；The call of my company's active response national energy conservation and emission reduction in 2011 is attempted simultaneously
Successfully 50,000 tons of liquid CO 2 devices of a set of annual output are built, continuous operation 8 years.The device, which is utilized, washes production containing low-temp methanol
Raw industrial waste gas produces liquid CO 2, and operating unit is by gas compression, desulfurization, de- hydrocarbon purification, liquefaction purification process
Composition.It is newly developed a kind of more simplified on the basis of accumulating and groping operating experience early period by production run in recent years
Production liquid CO 2 device, the present apparatus can greatly simplify process flow and operating unit, reduce production liquid dioxy
Change the construction investment and operating cost of carbon, there is very wide application prospect.
Utility model content
The utility model relies on the device of methyl alcohol product installation production liquid CO 2, it is therefore intended that solves existing dioxy
Change carbon process units is high, high production cost using the generally existing investment of low-temperature liquefaction technique production liquid CO 2 to ask
Topic provides a kind of device of production liquid CO 2 more simplified by process compression and process simplification, and this method drops
Low facility investment also reduces production run cost, can obtain higher economic benefit.
The technical solution of the utility model is achieved in that the device for relying on methyl alcohol product installation production carbon dioxide, including
Sequentially connected unstripped gas tower, pre- desulfurizing tower, adsorption tower, compressor set, recooler, drying tower, carbon dioxide condensing device,
Purifying column, product spherical tank；The carbon dioxide condensing device uses propylene for refrigerant, and carbon dioxide condensing device is raw for methanol
Produce device propylene compressor.
Preferably, the drying tower is molecular sieve drying tower.
Preferably, the drying tower includes the first drying tower and the second drying tower, the first drying tower and the second drying tower one
It is standby with one.
Preferably, the compressor set is carbon-dioxide gas compressor.
Preferably, the purifying column is connect by concentration detection apparatus with pipeline with adsorption tower.
Using brief introduction, the utility model is mainly the carbon dioxide commercial tail gas for recycling low-temp methanol and washing I sections of reabsorber generations
(gas CO2Purity is high, sulfur content are low);Primary operational is by pre- desulfurization, carbon-dioxide gas compressor, molecular sieve drying, carbon dioxide
The auxiliary processes such as processes and desiccant regeneration such as low hypothermia liquefaction and purification, the storage of cryogenic liquid product are completed.
Pre- desulfurization: gas removes H through carbon dioxide desulfurization device2The present apparatus is entered back into after the impurity such as S.
Adsorption tower absorption: the unstripped gas Jing Guo pre- desulfurization, into adsorption tower (using active carbon as adsorbent), by raw material
The CH3OH impurity removal being likely to occur in gas, adsorption tower bed is interior to load activated carbon adsorbent, is inhaled using the fixed bed of telling of two towers
Attached, it is standby that two towers one open one.Adsorbent, which is heated at 150 DEG C with steam, to be regenerated, and with drop a hint at the top of purifying column to adsorption tower into
Row cooling drying.Depending on its regeneration period is with the CH3OH content of impurities in feed gas.Gas after absorption enters titanium dioxide
Carbon pressure contracting compression.
Compressor set pressurization: CO2Unstripped gas enters CO after desulfurization2Compressor, to CO2Unstripped gas is compressed, through pressing
After contracting machine two stages of compression, unstripped gas is boosted up to 2.8MPa.
Recooler: it is vented air cooling with the purifying column of low temperature, is cooled down to carbon dioxide gas.
Drying tower is dry: being dehydrated using molecular sieve water sucting principle, makes CO2Water content≤5ppm in gas, (dew point is low
In -65 DEG C).
Carbon dioxide condensing device low-temperature liquefaction: make CO using the cooling of propylene sweat cooling2It is liquefied as liquid.
Purifying column purification: utilizing principles of rectification, separates opposite low-boiling point material, makes liquid carbon dioxide product purity >
99.9% purifies;Liquid CO 2 concentration meets design requirement and then enters cryogenic liquid carbon dioxide Spherical tank Storage after purification,
Otherwise pumping starts the separating-purifying of second stage until reaching design concentration requirement to adsorption tower.
The utility model equipment choosing middle-pressure process produces liquid CO 2, pure according to the thermodynamic condition of carbon dioxide phase diagram
As long as carbon dioxide is able to maintain 2.1MPa, the condition in -20 DEG C of co 2 liquefaction area can obtain liquid CO 2;By
In being 94.5% or more into present apparatus unstripped gas carbon dioxide purity, remaining is incoagulable gas, while in order to reduce purification process
In carbon dioxide loss, therefore need to two-stage compression raw material air carbon dioxide through oil-free lubrication final pressure is mentioned to 2.8MPa, use
Propylene liguid evaporates at -28~-32 DEG C, cools down compressed carbon dioxide gas indirectly to -23 DEG C, makes its liquefaction;Because of raw material
Gas contains a small amount of steam, this steam has to carry out dehumidification drying before co 2 liquefaction: one meets liquid CO 2
Product moisture≤5ppm quality index；Secondly in order to guarantee carbon dioxide in liquefaction and purification process, not because of carbon dioxide
The moisture of gas ice blockage pipeline and equipment at low temperature, and continue production cannot.
For energy conservation, the cycle of operation for making full use of waste cold, extending molecular sieve, compressed gas enters recooler, uses
The purifying column of low temperature is vented air cooling, cools down to carbon dioxide gas.Subsequently into drier, using adsorbent of molecular sieve to water
Absorption, by gas minor amount of water remove, it is ensured that carbon dioxide gas moisture≤5ppm after removal moisture drying.Molecular sieve absorption
Regeneration is heated after saturation, is recycled.(drying tower opens one using one for form).
Liquid CO 2 after liquefaction will carry out rectification and purification, using purifying column, according to carbon dioxide and impurity composition
Boiling point it is different, using low-temperature reduced-pressure principles of rectification, impurity is separated under given conditions, it is pure both to have improved carbon dioxide
Degree obtains qualified liquid carbon dioxide product, and reduces the gas consumption of product.
Cooling, the liquefaction of carbon dioxide gas, by the low-temperature evaporation of propylene, are transmitted cooling capacity and are given using propylene as refrigerant
Carbon dioxide is allowed to liquefy, the pressurization of propylene steam propylene refrigeration compressor and the condensation of evaporative condenser, and propylene steam is cold
Propylene liguid is congealed into, then removes CO2 condenser evaporation endothermic again, completes refrigeration cycle.Refrigeration uses methanol device propylene refrigeration
Cooling capacity more than needed, no longer adds refrigeration unit, greatly simplifies operation technological process and operating unit, reduces equipment investment and operation
Cost, and thoroughly remove danger source caused by original ammonia refrigeration.
The utility model has the following beneficial effects: the new process used, new technology be in traditional mature technical foundation, into one
Step carries out process optimization, rotating machinery quantity is reduced to the greatest extent, to reduce power consumption；The characteristics of according to this process flow,
The arrangement for rationally carrying out process equipment, rationally makes material artesian flow using potential difference, to reduce power consumption；CO2Condenser benefit
With the refrigerating capacity more than needed of refrigeration ice maker, thermal energy is reasonably utilized, no longer adds refrigeration ice maker, thus greatly reduces electric energy and disappears
Consumption and circulating cooling water consumption, and it is stable, reliable；Process units centralized arrangement uses lightness, outdoorization cloth as far as possible
It sets, pipeline distance between device is reduced, to reduce energy consumption；Select energy-saving and high efficient machine CO2Compressor improves using energy source
Rate, it is energy-saving；Energy-saving electrical equipment is selected, high photosynthetic efficiency energy-saving lighting fitting is selected.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the device that the utility model relies on methyl alcohol product installation production carbon dioxide, process pair
Than (dotted portion is the utility model process after optimization)；
Wherein, 1. unstripped gas tower, 2. pre- desulfurizing towers, 3. adsorption towers, 4. compressor sets, 5. recoolers, 6. is dry
Dry tower, 7. carbon dioxide condensing devices, 8. purifying columns, 9. product spherical tanks, 10. concentration detection apparatus, 61. first is dry
Dry tower, 62. second drying towers.
Specific embodiment
It is raw to this support methyl alcohol product installation below in conjunction with example and attached drawing in order to deepen the understanding to the utility model
The device for producing carbon dioxide is described in further detail, which is only used for explaining the utility model, does not constitute to the utility model
The restriction of protection scope.
As shown in Figure 1, the device of methyl alcohol product installation production carbon dioxide is relied on, including sequentially connected unstripped gas tower 1,
Pre- desulfurizing tower 2, adsorption tower 3, carbon-dioxide gas compressor device 4, recooler 5, molecular sieve drying tower 6, carbon dioxide condensing device
7, purifying column 8, product spherical tank 9；The carbon dioxide condensing device (7) uses propylene for refrigerant, carbon dioxide condensing device 7
For methyl alcohol product installation propylene compressor；Drying tower 6 includes the first drying tower 61 and the second drying tower 62, the first drying tower 61
With 62 the using and the reserved of the second drying tower；Pure tower 8 is connected by concentration detection apparatus 10, pipeline and adsorption tower 3.
The material balance stage in the utility model device design process will recycle the cooling capacity of carbon dioxide needs in tail gas as system
The accounting that cold unit needs is entered, and prevents the later period from adding small-sized ice maker bring series of malpractice again for recycling tail gas.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. relying on the device of methyl alcohol product installation production carbon dioxide, which is characterized in that including sequentially connected unstripped gas tower
(1), pre- desulfurizing tower (2), adsorption tower (3), compressor set (4), recooler (5), drying tower (6), carbon dioxide condensing device
(7), purifying column (8), product spherical tank (9)；
The carbon dioxide condensing device (7) uses propylene for refrigerant, and carbon dioxide condensing device (7) is methyl alcohol product installation
Use propylene compressor.
2. the device according to claim 1 for relying on methyl alcohol product installation production carbon dioxide, which is characterized in that described dry
Dry tower (6) is molecular sieve drying tower.
3. the device according to claim 2 for relying on methyl alcohol product installation production carbon dioxide, which is characterized in that described dry
Dry tower (6) includes the first drying tower (61) and the second drying tower (62), and the first drying tower (61) and the second drying tower (62) one are used
One is standby.
4. the device according to claim 3 for relying on methyl alcohol product installation production carbon dioxide, which is characterized in that the pressure
Contracting machine device (4) is carbon-dioxide gas compressor.
5. the device according to claim 4 for relying on methyl alcohol product installation production carbon dioxide, which is characterized in that described to mention
Pure tower (8) is connected by concentration detection apparatus (10), pipeline and adsorption tower (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821940531.9U CN209259704U (en) | 2018-11-23 | 2018-11-23 | Rely on the device of methyl alcohol product installation production carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821940531.9U CN209259704U (en) | 2018-11-23 | 2018-11-23 | Rely on the device of methyl alcohol product installation production carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209259704U true CN209259704U (en) | 2019-08-16 |
Family
ID=67564093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821940531.9U Expired - Fee Related CN209259704U (en) | 2018-11-23 | 2018-11-23 | Rely on the device of methyl alcohol product installation production carbon dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209259704U (en) |
-
2018
- 2018-11-23 CN CN201821940531.9U patent/CN209259704U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190816 |