CN106316799A - Ultralow-sulfur methyl tert-butyl ether production device - Google Patents
Ultralow-sulfur methyl tert-butyl ether production device Download PDFInfo
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- CN106316799A CN106316799A CN201510400058.XA CN201510400058A CN106316799A CN 106316799 A CN106316799 A CN 106316799A CN 201510400058 A CN201510400058 A CN 201510400058A CN 106316799 A CN106316799 A CN 106316799A
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- Prior art keywords
- butyl ether
- catalytic distillation
- tower
- distillation tower
- tertiary butyl
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- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000011593 sulfur Substances 0.000 title claims abstract description 60
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 230000003197 catalytic effect Effects 0.000 claims abstract description 97
- 238000004821 distillation Methods 0.000 claims abstract description 85
- 239000003795 chemical substances by application Substances 0.000 claims description 76
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 54
- 230000003009 desulfurizing effect Effects 0.000 claims description 49
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 28
- 238000006477 desulfuration reaction Methods 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 26
- 230000023556 desulfurization Effects 0.000 claims description 25
- 230000004087 circulation Effects 0.000 claims description 24
- 230000003068 static effect Effects 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 6
- 230000017531 blood circulation Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 40
- 239000000047 product Substances 0.000 description 20
- 239000000284 extract Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 241001270131 Agaricus moelleri Species 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- -1 methyl tert-butyl group Chemical group 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/34—Separation; Purification; Stabilisation; Use of additives
- C07C41/40—Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation
- C07C41/42—Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/34—Separation; Purification; Stabilisation; Use of additives
- C07C41/46—Use of additives, e.g. for stabilisation
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to an ultralow-sulfur methyl tert-butyl ether production device. The device comprises a desulfurizer adding system and a circulatory system. A side manhole below a feeding plate of the existing methyl tert-butyl ether catalytic distillation tower is used as a methyl tert-butyl ether product gas phase extraction port, an extraction port at the tower bottom of a catalytic distillation tower reboiler is connected to a pipe in the tower so that an extraction port position is raised, the gas phase extraction port tightly close to an upper tower plate has a standpipe sealed structure, separation height between the gas phase extraction port and an adjacent lower tower plate is in a range of 300-2000mm, a high-sulfur content ingredient is discharged from the tower bottom, and the modified methyl tert-butyl ether catalytic distillation tower is used for catalytic distillation and can be used as a main component part of a methyl tert-butyl ether desulphurization device. The ultralow-sulfur methyl tert-butyl ether production device prevents opening of the tower wall of the existing catalytic distillation tower, is safe and reliable, has simple production processes, is convenient for enforcement and has a low investment and good desulphurization effects.
Description
Technical field
The present invention relates to the production field of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), particularly relate to one and utilize existing methyl tertiary butyl ether(MTBE)
Catalytic distillation device and desulfurizing agent produce the device of super-low sulfur methyl tertiary butyl ether(MTBE).
Background technology
Current domestic gasoline generally adds methyl tertiary butyl ether(MTBE) to improving the octane number of gasoline.But environmental protection is newly advised and is required that gasoline reaches
State IV or state's V standard, i.e. sulfur content are less than 50mg/kg or 10mg/kg.The main production work of current domestic methyl tertiary butyl ether(MTBE)
Skill be mixing C4 and methanol be etherified in cation exchange resin is as the catalytic distillation device of catalyst and separate.Methyl tertbutyl
Ether product usually contains 50-200mg/kg sulfide, sometimes with up in the methyl tertiary butyl ether(MTBE) of part manufacturer production
The sulfide of 2000mg/kg, therefore the necessary desulfurization of methyl tertiary butyl ether(MTBE) can be as preferable blend component.
CN104370707 uses in catalytic distillation produces the separated of methyl tertiary butyl ether(MTBE) and/or adds sulfur richness before separated
Collect agent, and control distillation condition makes methanol and mixes C4 from overhead extraction, by the sulfide after the absorption of sulfur pregnant solution with not by sulfur
The sulfide that pregnant solution absorbs is from extraction at the bottom of tower, and the logistics containing methyl tertiary butyl ether(MTBE) is from side take-off, but undeclared in patent is
Gas phase or liquid phase are extracted out.
CN203960090U notes in methyl tertiary butyl ether(MTBE) catalytic distillation tower feeds and adds desulfurization on the process base of fresh desulfurizing agent
Agent circular route, makes that desulfurizing agent is significantly more efficient to be utilized.The most undeclared in patent is liquid phase or gas phase extraction.
CN203923059U adds coalescent pack at the bottom of tower on the basis of CN203960090U, stretches gas phase and collect in side line discharge
Pipe, its pipe portion cuts lower half circle to prevent dirty liquid phase from going out tower with product；It is provided with three discharging openings.Except will be to catalytic distillation
Tower body does bigger transformation, and especially many places opening on tower wall, exists outside potential safety hazard, and during the load fluctuation of tower, desulfurized effect is deteriorated,
It is difficult to reach the requirement of sulfur-bearing ＜ 10mg/kg in methyl tertiary butyl ether(MTBE).
Summary of the invention
The invention provides the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), on the premise of adding desulfurizing agent, utilize existing first
The manhole of base tertbutyl ether catalytic distillation tower is as methyl tert-butyl ether product side line gas phase discharging opening, and desulfurized effect is good and existing
As desulfurizer while methyl tertiary butyl ether(MTBE) catalytic distillation tower catalytic distillation, its improvement expenses is extremely low.
The technical scheme is that the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), including desulfurizing agent addition system and
Blood circulation, with existing methyl tertiary butyl ether(MTBE) catalytic distillation tower feedboard using downside man-hole opening as methyl tert-butyl ether product
Gas phase outlet port；From catalytic distillation tower reboiler in the outlet port at the bottom of tower to tower inner connecting tube to improve position, outlet port；Gas phase is extracted out
Mouth column plate immediately above is riser enclosed construction；Gas phase outlet port is left 300-2000mm with adjacent underneath column plate and is separated height
Degree；High sulfur component is discharged at the bottom of tower；As methyl-tert fourth while improved methyl tertiary butyl ether(MTBE) catalytic distillation tower catalytic distillation
The key component of base ether desulfurizer.
In technique scheme, in described catalytic distillation tower reboiler outlet port tower, inner connecting tube height is 200-1800mm, excellent
Select 500-1500mm；Described inner connecting tube and catalytic distillation tower reboiler outlet port be connected by interpolation type or other known to connect
Connect mode；With block on the riser of described gas phase outlet port closed column plate immediately above；Riser number is 1-100,
Preferably 2-20.
Further, the described external threeway in manhole gas phase outlet port, side, horizontal straightthrough port, as manhole, seals with manhole cover,
Vertical mouth is gas phase outlet port, is connected with feed exchanger；
Further, below described side line gas phase outlet port, tower tray percent opening is more than tower tray percent opening above it, it is ensured that without mist
Carry secretly to gas phase extraction；
Further, described catalytic distillation tower bottom liquid-liquid interface has automatic control system, it is ensured that desulfuration efficiency and methyl-tert fourth
The yield of base ether product；
Further, extend upper and lower tower tray in described side line gas phase outlet port, thus regulate the position, outlet port of reality.
In above-mentioned technical scheme, described desulfurizing agent and circulation desulfurization agent and sulfur methyl tertiary butyl ether material are at catalytic distillation
Catalytic distillation tower is entered after mixed merga pass static mixer mix homogeneously after tower feed exchanger；
In above-mentioned technical scheme, described desulfurizing agent and circulation desulfurization agent another kind feed postition are and the sulfur-containing methyl tert-butyl group
Ether material connects pipeline between catalytic reactor and catalytic distillation tower feed exchanger and mixes and pass through static mixer mix homogeneously
Rear entrance catalytic distillation tower；
In above-mentioned technical scheme, the third feed postition of described desulfurizing agent and circulation desulfurization agent is desulfurizing agent and circulates de-
Sulfur agent mixed with sulfur-bearing methanol and mixing C4 before catalytic reactor and enters catalysis after merga pass static mixer is mixed homogeneously instead
Answer device, subsequently into catalytic distillation tower；
In above-mentioned technical scheme, the 4th kind of feed postition of described desulfurizing agent and circulation desulfurization agent is that desulfurizing agent is anti-in catalysis
Entrance catalytic reactor, circulation desulfurization after merga pass static mixer is mixed homogeneously is mixed with sulfur-bearing methanol and mixing C4 before answering device
Agent connects pipeline between catalytic reactor and catalytic distillation tower feed exchanger and mixes merga pass with sulfur methyl tertiary butyl ether material
Catalytic distillation tower feed exchanger is entered, subsequently into catalytic distillation tower after static mixer mix homogeneously；
In above-mentioned technical scheme, the 5th kind of feed postition of described desulfurizing agent and circulation desulfurization agent is that desulfurizing agent is anti-in catalysis
Entrance catalytic reactor, circulation desulfurization after merga pass static mixer is mixed homogeneously is mixed with sulfur-bearing methanol and mixing C4 before answering device
Agent mixes after merga pass static mixer mixs homogeneously after catalytic distillation tower feed exchanger with sulfur methyl tertiary butyl ether material
Enter catalytic distillation tower.
In above-mentioned technical scheme, described desulfurizing agent use MDS-01 that Shanghai Nake Auxiliaries Co., Ltd. produces and
MDS-02。
Compared with prior art, it is an advantage of the current invention that:
1. existing catalytic distillation tower tower tower wall is not done any transformation by the present invention or perforate can be by methyl tert-butyl ether product from urging
Change distillation column side line gas phase to extract out, at the bottom of tower, discharge high sulfur component；In addition use bottom reboiler outlet port to tower inner connecting tube to carry
Position, high reboiler outlet port, thus as desulfurizer, peace while ensureing methyl tertiary butyl ether(MTBE) catalytic distillation tower catalytic distillation
Complete reliable, small investment, technique is simple, and easy construction, catalytic distillation tower need not pressure testing safety check again as pressure vessel；
2. the catalytic distillation tower side line gas phase outlet port column plate immediately above of the present invention is riser enclosed construction, its with next-door neighbour under
Squarer plate leaves the transport disengaging height of 300-2000mm and increases open ratio of plate below side line gas phase outlet port, it is ensured that no liquid
Or entrainment is to side line gas phase discharging, thus ensure that the performance of desulfurizing agent effect and methyl tert-butyl ether product sulfur content are less than
10mg/kg。
Accompanying drawing explanation
Fig. 1 a-Fig. 1 e is apparatus of the present invention flow chart；
Fig. 2 a-Fig. 2 e is catalytic distillation tower side line gas phase outlet port structure chart；
Fig. 3 is that above catalytic distillation tower side line gas phase outlet port, tower plate structure figure closed by riser；
Fig. 4 a-Fig. 4 c is catalytic distillation tower reboiler outlet port structure chart.
Detailed description of the invention
As shown in Figure 1a, the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), is led to by desulfurizing agent tank 12 including fresh desulfurizing agent
Cross desulfurizing agent dosing pump 1 and circulation desulfurization agent and mix raw material through static mixer 3 by circulation desulfurization agent dosing pump 2 after etherificate
Uniformly entering catalytic distillation tower 4 after mixing, tower top goes out C4 and methanol azeotrope, catalytic distillation tower feedboard lower side manhole 5
As side line gas phase methyl tert-butyl ether product extraction mouth, going out desulfurizing agent and high sulfur-bearing high boiling component at the bottom of tower, its part is as following
Ring desulfurizing agent is used for circulating, and part is retracted to waste liquid tank 13 as by-product.Bottom reboiler 6 outlet port inner connecting tube 7, on it
The mouth of pipe is 200-1800mm, preferably 500-1500mm from height at the bottom of tower.
As shown in Figure 1 b, the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), another kind of detailed description of the invention is fresh desulfurizing agent
By desulfurizing agent tank 12 by desulfurizing agent dosing pump 1 and circulation desulfurization agent by circulation desulfurization agent dosing pump 2 through static mixer 3 with
Mix the feed exchanger entering catalytic distillation tower 4 after raw material uniformly mixes after etherificate, then enter back into catalytic distillation tower 4.Tower
Ejecting C4 and methanol azeotrope, catalytic distillation tower feedboard lower side manhole 5 is adopted as side line gas phase methyl tert-butyl ether product
Outlet, goes out desulfurizing agent and high sulfur-bearing high boiling component at the bottom of tower, its part is used for circulating as circulation desulfurization agent, and part is retracted to give up
Flow container 13 is as by-product.Bottom reboiler 6 outlet port inner connecting tube 7, its upper orifice is 200-1800mm from height at the bottom of tower, excellent
Select 500-1500mm.
As illustrated in figure 1 c, the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), the third detailed description of the invention is fresh desulfurizing agent
By desulfurizing agent tank 12 by desulfurizing agent dosing pump 1 and circulation desulfurization agent by circulation desulfurization agent dosing pump 2 through static mixer 3 with
Methanol and mixing C4 mixing raw material enter catalytic reactor 14 after uniformly mixing, and then enter back into catalytic distillation tower 4.Tower top goes out
C4 and methanol azeotrope, catalytic distillation tower feedboard lower side manhole 5 as side line gas phase methyl tert-butyl ether product extraction mouth,
Going out desulfurizing agent and high sulfur-bearing high boiling component at the bottom of tower, its part is used for circulating as circulation desulfurization agent, and part is retracted to waste liquid tank 13
As by-product.Bottom reboiler 6 outlet port inner connecting tube 7, its upper orifice is 200-1800mm from height at the bottom of tower, preferably
500-1500mm。
As shown in Figure 1 d, the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), the 4th kind of detailed description of the invention is fresh desulfurizing agent
By desulfurizing agent tank 12 by desulfurizing agent dosing pump 1 through static mixer 3 with mix C4 and methanol mixed material uniformly mixes laggard
Entering catalytic reactor 14, circulation desulfurization agent mixes entrance catalytic distillation after raw material is mixed homogeneously through static mixer 3 ' after etherificate
Tower feed exchanger 9, then enters back into catalytic distillation tower 4.Tower top goes out C4 and methanol azeotrope, under catalytic distillation tower feedboard
Side, portion manhole 5, as side line gas phase methyl tert-butyl ether product extraction mouth, goes out desulfurizing agent and high sulfur-bearing high boiling component at the bottom of tower,
Its part is used for circulating as circulation desulfurization agent, and part is retracted to waste liquid tank 13 as by-product.In bottom reboiler 6 outlet port
Adapter 7, its upper orifice is 200-1800mm, preferably 500-1500mm from height at the bottom of tower.
As shown in fig. le, the process units of a kind of super-low sulfur methyl tertiary butyl ether(MTBE), the 5th kind of detailed description of the invention is fresh desulfurizing agent
By desulfurizing agent tank 12 by desulfurizing agent dosing pump 1 through static mixer 3 with mix C4 and methanol mixed raw material uniformly mixes laggard
Entering catalytic reactor 14, circulation desulfurization agent mixes raw material after etherificate through static mixer 3 ' and mixs homogeneously, at catalytic distillation tower
Catalytic distillation tower 4 is entered after feed exchanger 9.Tower top goes out C4 and methanol azeotrope, catalytic distillation tower feedboard lower side
Manhole 5, as side line gas phase methyl tert-butyl ether product extraction mouth, goes out desulfurizing agent and high sulfur-bearing high boiling component, its part at the bottom of tower
Being used for circulating as circulation desulfurization agent, part is retracted to waste liquid tank 13 as by-product.Bottom reboiler 6 outlet port inner connecting tube 7,
Its upper orifice is 200-1800mm, preferably 500-1500mm from height at the bottom of tower.
As in figure 2 it is shown, catalytic distillation tower side line gas phase outlet port tower external structure has two kinds of structural shapes, a kind of direct by manhole 5
Connect gas phase and extract pipeline 8 out, extract pipeline 8 out and be connected (Fig. 2 a) with catalytic distillation tower feed exchanger 9；Another kind is outside manhole 5
Connecing threeway 10, horizontal straightthrough port, as manhole, seals with manhole cover 11, and vertical mouth is gas phase outlet port, with catalytic distillation tower
Feed exchanger 9 is connected (Fig. 2 b).Preferably Fig. 2 b structural shape.Catalytic distillation tower side line gas phase outlet port tower inner structure has four
Plant structural shape: the first stretches formula in level, the angular cut in direction, end oriented outlet port, it is simple to collect gas (Fig. 2 c)；
The second is the gas skirt that column plate extends upward, and skirt end is the level angular cut (Fig. 2 d) to direction, outlet port；The
Three kinds is the gas skirt that column plate extends downwards, and skirt end is the level angular cut (Fig. 2 e) to direction, outlet port；4th
Plant and do not take in tower, preferably the 4th kind structural shape.
As it is shown on figure 3, catalytic distillation tower side line gas phase outlet port column plate immediately above is riser enclosed construction.Riser 12
There is block 13 top.The structure of riser belongs to known technology, and block can be flat-top, umbrella crown and inverted U cap.
As shown in Figure 4, catalytic distillation tower reboiler outlet port inner connecting tube 7 has three kinds of patterns, for upper orifice (Fig. 4 a) upward, court
Side (Fig. 4 b), down (Fig. 4 c).
With embodiment, the invention will be further described below, but the present invention is not limited to following embodiment.
Embodiment 1
The side line gas phase outlet port structure of flow process, Fig. 2 b and Fig. 2 c as shown in Fig. 1 a, outlet port are separated by with bottom next-door neighbour's column plate
The tower of the catalytic distillation tower reboiler of tower plate structure, 8 riseies, Fig. 4 b closed by flat-top riser shown in 900mm, Fig. 3
Outlet port, end inner connecting tube structure, inner connecting tube height 500mm, use the desulfurizing agent MDS-02 that Shanghai Nake Auxiliaries Co., Ltd. produces,
Catalytic distillation tower feeds 75 DEG C, at the bottom of tower 140 DEG C, and side line gas phase extracts 125 DEG C out, and in product methyl tertiary butyl ether(MTBE), sulfur content is listed in
Table 1.
Comparative example 1
By the old process of existing industry, flow process similar as shown in Figure 1a, simply product methyl tertiary butyl ether(MTBE) is taken out mutually by tower bottom liquid
Go out, without side line gas phase outlet port and relevant tray revamping, do not use desulfurizing agent, the outlet port of catalytic distillation tower reboiler to connect without interior
Pipe, catalytic distillation tower feeds 75 DEG C, and at the bottom of tower 135 DEG C, in product methyl tertiary butyl ether(MTBE), sulfur content is listed in table 1.
Embodiment 2
Side line gas phase outlet port structure, outlet port that flow process as shown in Fig. 1 b, Fig. 2 b and Ta Nei do not take over are close to tower with bottom
Plate is separated by 500mm, the extraction of catalytic distillation tower reboiler of tower plate structure, 12 riseies, Fig. 4 b closed by band umbrella crown riser
Mouth inner connecting tube structure, inner connecting tube height 1000mm, use the desulfurizing agent MDS-02 that Shanghai Nake Auxiliaries Co., Ltd. produces, catalysis to steam
Evaporating tower and feed 75 DEG C, at the bottom of tower 140 DEG C, side line gas phase extracts 125 DEG C out, and in product methyl tertiary butyl ether(MTBE), sulfur content is listed in table 1.
Embodiment 3
The side line gas phase outlet port structure of flow process, Fig. 2 b and Fig. 2 c as shown in Fig. 1 c, outlet port are separated by with bottom next-door neighbour's column plate
Taking out of the catalytic distillation tower reboiler of tower plate structure, 6 riseies, Fig. 4 a closed by flat-top riser shown in 1500mm, Fig. 3
Outlet inner connecting tube structure, inner connecting tube height 1500mm, the desulfurizing agent MDS-01 using Shanghai Nake Auxiliaries Co., Ltd. to produce, urges
Changing input of column 75 DEG C, at the bottom of tower 140 DEG C, side line gas phase extracts 125 DEG C out, and in product methyl tertiary butyl ether(MTBE), sulfur content is listed in table 1.
Embodiment 4
The side line gas phase outlet port structure of flow process, Fig. 2 a and Fig. 2 c as shown in Fig. 1 d, outlet port are separated by with bottom next-door neighbour's column plate
Connect in the outlet port of the catalytic distillation tower reboiler that 800mm, band umbrella crown riser close tower plate structure, 15 riseies, Fig. 4 c
Tubular construction, inner connecting tube height 1200mm, use the desulfurizing agent MDS-01 that Shanghai Nake Auxiliaries Co., Ltd. produces, catalytic distillation tower enters
Expecting 75 DEG C, at the bottom of tower 140 DEG C, side line gas phase extracts 125 DEG C out, and in product methyl tertiary butyl ether(MTBE), sulfur content is listed in table 1.
Embodiment 5
The side line gas phase outlet port structure of flow process, Fig. 2 b and Fig. 2 c as shown in Fig. 1 e, outlet port are separated by with bottom next-door neighbour's column plate
Connect in the outlet port of the catalytic distillation tower reboiler that 800mm, band umbrella crown riser close tower plate structure, 12 riseies, Fig. 4 b
Tubular construction, inner connecting tube height 1200mm, use the desulfurizing agent MDS-02 that Shanghai Nake Auxiliaries Co., Ltd. produces, catalytic distillation tower enters
Expecting 75 DEG C, at the bottom of tower 138 DEG C, side line gas phase extracts 120 DEG C out, and in product methyl tertiary butyl ether(MTBE), sulfur content is listed in table 1.
Table 1
| Desulfurizing agent | Sulfur content/ppm in product methyl tertiary butyl ether(MTBE) | |
| Comparative example | 115 | |
| Embodiment 1 | MDS-02 | 4 |
| Embodiment 2 | MDS-02 | 6 |
| Embodiment 3 | MDS-01 | 5 |
| Embodiment 4 | MDS-01 | 4 |
| Embodiment 5 | MDS-02 | 2 |
Claims (10)
1. a process units for super-low sulfur methyl tertiary butyl ether(MTBE), including addition system and the blood circulation of desulfurizing agent, with existing methyl-tert
Butyl ether catalytic distillation tower feedboard is using downside man-hole opening as methyl tert-butyl ether product gas phase outlet port；From catalytic distillation tower
Reboiler in the outlet port at the bottom of tower to tower inner connecting tube to improve position, outlet port；Gas phase outlet port column plate immediately above is riser envelope
Closed type structure；Gas phase outlet port and adjacent underneath column plate leave 300-2000mm transport disengaging height；High sulfur component is discharged at the bottom of tower；
Portion is mainly comprised as methyl tertiary butyl ether(MTBE) desulfurizer while improved methyl tertiary butyl ether(MTBE) catalytic distillation tower catalytic distillation
Point.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that described side manhole gas
The external threeway in phase outlet port, horizontal straightthrough port, as manhole, seals with manhole cover, and vertical mouth is gas phase outlet port, changes with charging
Hot device is connected.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that described catalytic distillation tower
In the tower of reboiler outlet port, inner connecting tube height is 200-1800mm.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that described gas phase outlet port
With block on the riser of closed column plate immediately above, riser number is 1-100.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that described side manhole gas
Below phase outlet port, tower tray percent opening is more than tower tray percent opening above it.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that desulfurizing agent and circulation desulfurization
Agent and sulfur methyl tertiary butyl ether raw material are after after catalytic distillation tower feed exchanger, mixed merga pass static mixer is mixed homogeneously
Enter catalytic distillation tower.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that desulfurizing agent and circulation desulfurization
Agent is connected pipeline between catalytic reactor and catalytic distillation tower feed exchanger with sulfur methyl tertiary butyl ether raw material and mixes and pass through
Catalytic distillation tower feed exchanger is entered, subsequently into catalytic distillation tower after static mixer mix homogeneously.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that desulfurizing agent and circulation desulfurization
Agent mixed entrance catalytic reactor after merga pass static mixer is mixed homogeneously with methanol and mixing C4 before catalytic reactor,
Subsequently into catalytic distillation tower.
The process units of super-low sulfur methyl tertiary butyl ether(MTBE) the most according to claim 1, it is characterised in that desulfurizing agent is in catalytic reaction
Entrance catalytic reactor, circulation desulfurization after merga pass static mixer is mixed homogeneously is mixed with sulfur-bearing methanol and mixing C4 before device
Agent connects pipeline between catalytic reactor and catalytic distillation tower feed exchanger and mixes merga pass with sulfur methyl tertiary butyl ether material
Catalytic distillation tower feed exchanger is entered, subsequently into catalytic distillation tower after static mixer mix homogeneously.
10. according to claim] described in the process units of super-low sulfur methyl tertiary butyl ether(MTBE), it is characterised in that desulfurizing agent is anti-in catalysis
Mixing entrance catalytic reactor after merga pass static mixer is mixed homogeneously with sulfur-bearing methanol and mixing C4 before answering device, circulation is de-
Sulfur agent mixes merga pass static mixer with sulfur methyl tertiary butyl ether material after catalytic distillation tower feed exchanger mixs homogeneously
Rear entrance catalytic distillation tower.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109806607A (en) * | 2017-11-21 | 2019-05-28 | 辽宁海德新化工有限公司 | A kind of device that material purity can be improved |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040204614A1 (en) * | 2001-07-05 | 2004-10-14 | Catalytic Distillation Technologies | Process and apparatus for catalytic distillations |
| CN104262116A (en) * | 2014-06-23 | 2015-01-07 | 贺立明 | MTBE deep desulfurization device and method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040204614A1 (en) * | 2001-07-05 | 2004-10-14 | Catalytic Distillation Technologies | Process and apparatus for catalytic distillations |
| CN104262116A (en) * | 2014-06-23 | 2015-01-07 | 贺立明 | MTBE deep desulfurization device and method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806607A (en) * | 2017-11-21 | 2019-05-28 | 辽宁海德新化工有限公司 | A kind of device that material purity can be improved |
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