CN106957214A - Methanol heat-pump distillation system and method - Google Patents

Methanol heat-pump distillation system and method Download PDF

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Publication number
CN106957214A
CN106957214A CN201710243313.3A CN201710243313A CN106957214A CN 106957214 A CN106957214 A CN 106957214A CN 201710243313 A CN201710243313 A CN 201710243313A CN 106957214 A CN106957214 A CN 106957214A
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Prior art keywords
rectifying column
tower
column tower
reboiler
methanol
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CN201710243313.3A
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Chinese (zh)
Inventor
夏君君
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Jiangsu Leke Energy-Saving Technology Co Ltd
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Jiangsu Leke Energy-Saving Technology Co Ltd
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Priority to CN201710243313.3A priority Critical patent/CN106957214A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/02Monohydroxylic acyclic alcohols
    • C07C31/04Methanol
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The present invention relates to a kind of methanol heat-pump distillation system and method, belong to heat pump distillation field.System includes 4 grades of heat pump separators being sequentially connected in series, wherein every grade of heat pump separator includes rectifying column tower(2), vapour compression machine(3), reboiler(5), condenser(4);Wherein rectifying column tower(2)Overhead vapours is exported and vapour compression machine(3)Entrance is connected, vapour compression machine(3)Outlet and reboiler(5)Thermal source inlet is connected, reboiler(5)Thermal source outlet and condenser(4)Entrance is connected, condenser(4)Outlet is divided into two-way, all the way as a point tower top discharging pipeline, all the way with rectifying column tower(2)Refluxing opening is connected;Reboiler(5)Material outlet and rectifying column tower(2)Material inlet is connected, rectifying column tower(2)Material outlet and reboiler(5)Material inlet is connected.The present invention fully applies the latent heat of overhead vapours, with significant economic benefit.

Description

Methanol heat-pump distillation system and method
Technical field
The invention belongs to heat pump distillation field, it is related to a kind of methanol heat-pump distillation system and method.
Background technology
Methanol is one of modern chemical industry basic organic, mainly for the manufacture of formaldehyde, acetic acid, chloromethanes, methylamine and sulphur A variety of organic products such as dimethyl phthalate.Methanol is used to produce octane number additive methyl tertiary butyl ether(MTBE), methanol gasoline, methanol Fuel, and the product such as Methanol Protein, promote development and the market needs of methanol production.
In synthesizing methanol commercial process, the refined of crude carbinol is the important operation list for ensureing methanol product quality Member, while the energy consumption during refining methanol is also to influence the key factor of methanol production cost, directly influences industrial life The cost of production.Therefore, it is very important to reduce rectifying column tower running cost by engineering technology means.
The content of the invention
It is an object of the invention to provide a kind of methanol heat-pump distillation system and method, the energy in Conventional process is reduced Consumption.
A kind of methanol heat-pump distillation system, it is characterised in that:Including the 4 grades of heat pump being sequentially connected in series separators, wherein often Level heat pump separator includes rectifying column tower, vapour compression machine, reboiler, condenser;Wherein rectifying column tower tower top steams Vapor outlet is connected with vapour compression machine entrance, and vapour compression machine outlet is connected with reboiler thermal source inlet, reboiler thermal source outlet It is connected with condenser inlet, condensator outlet is divided into two-way, all the way as a point tower top discharging pipeline, is returned all the way with rectifying column tower Head piece is connected;Reboiler material outlet is connected with rectifying column tower material inlet, rectifying column tower material outlet and reboiler thing Expect that entrance is connected;In above-mentioned 4 grades of heat pump separators, the rectifying column tower entrance of the 1st grade of heat pump separator enters for crude carbinol Mouthful, the rectifying column tower entrance of the 2nd to 4 grade of heat pump separator and the outlet of the rectifying column tower of upper level heat pump separator It is connected.
Described rectifying column tower is plate column or packed tower.
Described reboiler is plate type heat exchanger or forced circulation heat exchange or falling-film heat exchanger.
Described vapour compression machine is roots-type or centrifugal or double-screw type.
The methanol heat-pump distillation system and method, it is characterised in that:Per in one-level heat pump separator, methanol solution enters Enter rectifying column tower and carry out rectifying, overhead extraction light component steam is pressurized heating, the light component after compression by vapour compression machine Steam is divided into two parts, part discharge a, part is made as the thermal source of reboiler after the condensed device cooling of reboiler discharge liquor For the phegma of rectifying column tower;In above-mentioned 4 grades of heat pump separators, rectifying column tower is entered in the 1st grade of heat pump separator Methanol solution be crude carbinol, the methanol solution that rectifying column tower is entered in the 2nd to 4 grade of heat pump separator is upper level heat pump The solution that the outlet of the rectifying column tower of separator is excluded.
The methanol heat-pump distillation system and method, it is characterised in that:The rectifying column tower operating pressure at different levels is 100kPa-800kPa, reflux ratio is 1.5-5;Described vapour compression machine, compression ratio is 1.5-3.63.
The advantage of the invention is that:By the use of heat pump distillation as the refined mode of methanol, the vapor action after compression is boiled again The thermal source of device, fully applies the latent heat of overhead vapours, with significant economic benefit.
Brief description of the drawings
Fig. 1 heat pump technology flow charts;
Label title in figure:1:Crude carbinol;2:Rectifying column tower;3:Vapour compression machine;4:Condenser;5:Reboiler.
Example is embodied
Embodiment 1
Certain existing unit needs to refine 710,000 tons of methanol per hour, it is desirable to refined methanol product requirement:Meet the United States Federal's industry Methanol standard " AA " level index.8000 hours operating times of year.
Crude carbinol composition is shown in Table 1 (mass percent)
The crude carbinol of table 1 constitutes (mass percent)
Technique is described:
The preliminary rectifying of crude carbinol 1 (313K, 71t/h) entrance one-level rectifying column tower progress, tower top methanol steam (343K, Heating 130KPa) is pressurized by compressor 3, operation compression ratio is 2.15, and methanol steam (362K, 280KPa) is used as rectifying after pressure The thermal source of the reboiler 5 of tower tower body 2, the condensed device 4 of reboiler discharge liquor (362K) is divided into two parts after cooling down, and a part of tower top goes out Expect (1.5t/h, 313K), a part of overhead reflux as rectifying column tower.(348K, methanol is dense for the discharging of rectifying column tower tower reactor Spend 91Wt%) enter two grades of smart rectifying column towers progress rectifying, overhead extraction tower top methanol steam (356K, 200KPa) is through overvoltage The supercharging heating of contracting machine, operation compression ratio is 1.5, and methanol steam (368K, 300KPa) is used as rectifying column tower reboiler after pressure Thermal source, is divided into two parts after the cooling of reboiler discharge liquor (368K) condensed device, a part discharge as tower top (30t/h, 313K), a part of overhead reflux (75t/h, 313K) as rectifying column tower.The discharging of rectifying column tower tower reactor (361K, methanol Concentration 84Wt%) enter the progress rectifying of three-level rectifying column tower, tower top methanol steam (340K, 110KPa) passes through compressor boost Heating, operation compression ratio is 2.4, and methanol steam (363K, 260KPa) then boils as the thermal source of rectifying column tower reboiler after pressure It is divided into two parts after the condensed device cooling of device discharge liquor (363K), a part discharges (29.5t/h, 313K) as tower top, one It is allocated as the overhead reflux (59t/h, 313K) for rectifying column tower.The discharging of rectifying column tower tower reactor (356K, methanol concentration 39Wt%) enter level Four rectifying column tower and carry out rectifying, tower top methanol steam (346K, 110KPa) passes through compressor boost liter Temperature, operation compression ratio is 3.63, and methanol steam (380K, 400KPa) then boils as the thermal source of rectifying column tower reboiler after pressure It is divided into two parts after the condensed device cooling of device discharge liquor (380K), a part discharges (4.5t/h, 313K) as tower top, a part It is used as the overhead reflux (4.5t/h, 313K) of rectifying column tower.
Described one-level rectifying column tower operating pressure is 130kPa, and tower top temperature is 343K, bottom temperature 348K.
The compressor of described one-level rectifying column tower is centrifugal compressor, and compression ratio is 2.15, compressor air-discharging pressure Power is 280kPa.
Described two-stage rectification tower tower body operating pressure is 200kPa, and tower top temperature is 356K, bottom temperature 361K.
The compressor of described two-stage rectification tower tower body is Roots Compressor, and compression ratio is 1.5, Compressor Discharge Pressure For 300kPa.
Described three-level rectifying column tower operating pressure is 110kPa, and tower top temperature is 340K, bottom temperature 363K.
The compressor of described three-level rectifying column tower is centrifugal compressor, and compression ratio is 2.4, Compressor Discharge Pressure For 260kPa.
Described level Four rectifying column tower operating pressure is 110kPa, and tower top temperature is 336K, bottom temperature 372K.
The compressor of described level Four rectifying column tower is twin-screw compressor, and compression ratio is 3.63, compressor air-discharging Pressure is 400kPa.
, can steam saving 80t/h, recirculated water 8250m3/h using heat pump rectification system compared with traditional distillation system (32 DEG C -38 DEG C), increase power consumption 5991kW.Calculated with current price, 160 yuan/t of steam, 0.2 yuan/m3 of recirculated water, electricity Take 0.8 yuan/degree, the two year Operation cost comparison such as following table (annual run time is calculated by 8000h):
Project Traditional three-tower rectification Heat pump distillation new technology
Steam expends (ten thousand yuan/8000h) 10240 0
Recirculated water (ten thousand yuan/8000h) 1600 280
The electricity charge (ten thousand yuan/8000h) 3834
Amount to (ten thousand yuan/8000h) 11840 4114
As can be seen from the above table, it is more traditional using the annual operating cost of heat pump distillation for 71t/h refining methanol devices More than 7,736 ten thousand yuan of three-tower rectification saving, about 70%, the investment of enterprise has greatly been saved, energy consumption is reduced.Embodiment 2
A kind of methanol heat-pump new technology:
The preliminary rectifying of crude carbinol 1 (313K, 50t/h) entrance one-level rectifying column tower progress, tower top methanol steam (337K, Heating 100KPa) is pressurized by compressor 3, operation compression ratio is 1.7, and methanol steam (348K, 170KPa) is used as rectifying after pressure The thermal source of the reboiler 5 of tower tower body 2, the condensed device 4 of reboiler discharge liquor (348K) is divided into two parts after cooling down, and a part of tower top goes out Expect (1.5t/h, 313K), a part of overhead reflux as rectifying column tower.(342K, methanol is dense for the discharging of rectifying column tower tower reactor Spend 91Wt%) enter the progress rectifying of two-stage rectification tower tower body, tower top methanol steam (337K, 100KPa) passes through compressor boost liter Temperature, operation compression ratio is 1.8, and methanol steam (352K, 180KPa) is used as the thermal source of rectifying column tower reboiler, reboiler after pressure It is divided into two parts after the condensed device cooling of discharge liquor (352K), a part discharges (30t/h, 313K) as tower top, and a part is made For the overhead reflux (75t/h, 313K) of rectifying column tower.Rectifying column tower tower reactor discharges (345K, methanol concentration 76.6Wt%) Rectifying is carried out into three-level rectifying column tower, tower top methanol steam (337K, 100KPa) is pressurized through compressor and heated up, operation compression Than for 2, methanol steam (356K, 200KPa) is used as the thermal source of rectifying column tower reboiler, reboiler discharge liquor (356K) after pressure It is divided into two parts after condensed device cooling, a part discharges (8.5t/h, 313K) as tower top, and a part is used as rectifying column tower Overhead reflux (17t/h, 313K).Rectifying column tower tower reactor discharging (349K, methanol concentration 57Wt%) enters level Four rectifying column Tower body carries out rectifying, and tower top methanol steam (338K, 100KPa) heats up by compressor boost, and operation compression ratio is 2.8, after pressure Methanol steam (366K, 280KPa) is as the thermal source of rectifying column tower reboiler, and reboiler discharge liquor (366K) condensed device is cold But it is divided into two parts afterwards, a part discharges (4.5t/h, 313K) as tower top, a part of overhead reflux as rectifying column tower (4.5t/h, 313K).
Described one-level rectifying column tower operating pressure is 100kPa, and tower top temperature is 337K, bottom temperature 342K.
The compressor of described one-level rectifying column tower is Roots Compressor, and compression ratio is 1.7, Compressor Discharge Pressure For 170kPa.
Described two-stage rectification tower tower body operating pressure is 100kPa, and tower top temperature is 337K, bottom temperature 345K.
The compressor of described two-stage rectification tower tower body is centrifugal compressor, and compression ratio is 1.8, Compressor Discharge Pressure For 180kPa.
Described three-level rectifying column tower operating pressure is 100kPa, and tower top temperature is 337K, bottom temperature 349K.
The compressor of described three-level rectifying column tower is Roots Compressor, and compression ratio is 2, and Compressor Discharge Pressure is 200kPa。
Described level Four rectifying column tower operating pressure is 100kPa, and tower top temperature is 338K, bottom temperature 359K.
The compressor of described level Four rectifying column tower is twin-screw compressor, and compression ratio is 2.8, compressor air-discharging pressure Power is 280kPa.
Embodiment 3
The preliminary rectifying of crude carbinol 1 (313K, 20t/h) entrance one-level rectifying column tower progress, tower top methanol steam (337K, Heating 100KPa) is pressurized by compressor 3, operation compression ratio is 1.6, and methanol steam (348K, 160KPa) is used as rectifying after pressure The thermal source of the reboiler 5 of tower tower body 2, the condensed device 4 of reboiler discharge liquor (348K) is divided into two parts after cooling down, and a part of tower top goes out Expect (1t/h, 313K), a part of overhead reflux as rectifying column tower.The discharging of rectifying column tower tower reactor (342K, methanol concentration 91Wt%) enter two-stage rectification tower tower body and carry out rectifying, tower top methanol steam (401K, 800KPa) passes through compressor boost liter Temperature, operation compression ratio is 2, and methanol steam (413K, 1600KPa) is used as the thermal source of rectifying column tower reboiler, reboiler after pressure It is divided into two parts after the condensed device cooling of discharge liquor (413K), a part discharges (12t/h, 313K) as tower top, and a part is made For the overhead reflux (24t/h, 313K) of rectifying column tower.Rectifying column tower tower reactor discharging (406K, methanol concentration 76Wt%) is entered Enter three-level rectifying column tower and carry out rectifying, tower top methanol steam (337K, 100KPa) heats up by compressor boost, operation compression Than for 2, methanol steam (356K, 200KPa) is used as the thermal source of rectifying column tower reboiler, reboiler discharge liquor (356K) after pressure It is divided into two parts after condensed device cooling, a part discharges (3t/h, 313K) as tower top, and a part is used as rectifying column tower Overhead reflux (6t/h, 313K).Rectifying column tower tower reactor discharging (349K, methanol concentration 58Wt%) enters level Four rectifying column tower Rectifying is carried out, tower top methanol steam (338K, 100KPa) heats up by compressor boost, operation compression ratio is methanol after 2.9, pressure Steam (367K, 290KPa) as rectifying column tower reboiler thermal source, after the cooling of reboiler discharge liquor (367K) condensed device Be divided into two parts, a part discharges (2t/h, 313K) as tower top, a part as rectifying column tower overhead reflux (2t/h, 313K)。
Described one-level rectifying column tower operating pressure is 100kPa, and tower top temperature is 337K, bottom temperature 342K.
The compressor of described one-level rectifying column tower is Roots Compressor, and compression ratio is 1.67, compressor air-discharging pressure Power is 160kPa.
Described two-stage rectification tower tower body operating pressure is 800kPa, and tower top temperature is 401K, bottom temperature 406K.
The compressor of described two-stage rectification tower tower body is centrifugal compressor, and compression ratio is 2, and Compressor Discharge Pressure is 1600kPa。
Described three-level rectifying column tower operating pressure is 100kPa, and tower top temperature is 337K, bottom temperature 349K.
The compressor of described three-level rectifying column tower is Roots Compressor, and compression ratio is 2, and Compressor Discharge Pressure is 200kPa。
Described level Four rectifying column tower operating pressure is 100kPa, and tower top temperature is 338K, bottom temperature 361K.
The compressor of described level Four rectifying column tower is twin-screw compressor, and compression ratio is 2.9, compressor air-discharging pressure Power is 290kPa.

Claims (6)

1. a kind of methanol heat-pump distillation system, it is characterised in that:
Including the 4 grades of heat pump being sequentially connected in series separators;
Wherein every grade heat pump separator includes rectifying column tower(2), vapour compression machine(3), reboiler(5), condenser (4);Wherein rectifying column tower(2)Overhead vapours is exported and vapour compression machine(3)Entrance is connected, vapour compression machine(3)Outlet with Reboiler(5)Thermal source inlet is connected, reboiler(5)Thermal source outlet and condenser(4)Entrance is connected, condenser(4)Outlet is divided into Two-way, all the way as a point tower top discharging pipeline, all the way with rectifying column tower(2)Refluxing opening is connected;Reboiler(5)Material outlet With rectifying column tower(2)Material inlet is connected, rectifying column tower(2)Material outlet and reboiler(5)Material inlet is connected;
In above-mentioned 4 grades of heat pump separators, the rectifying column tower of the 1st grade of heat pump separator(2)Entrance is crude carbinol(1)Enter Mouthful, the rectifying column tower entrance of the 2nd to 4 grade of heat pump separator and the outlet of the rectifying column tower of upper level heat pump separator It is connected.
2. the methanol heat-pump distillation system according to claim 1, it is characterised in that:Described rectifying column tower(2)And essence Tower tower body is evaporated for plate column or packed tower.
3. methanol heat-pump distillation system according to claim 1, it is characterised in that:Described reboiler(5)For plate-type heat-exchange Device or forced circulation heat exchange or falling-film heat exchanger.
4. methanol heat-pump distillation system according to claim 1, it is characterised in that:Described vapour compression machine (3) is Roots Formula or centrifugal or double-screw type.
5. methanol heat-pump rectificating method according to claim 1, it is characterised in that:
Per in one-level heat pump separator, methanol solution enters rectifying column tower and carries out rectifying, overhead extraction light component steam warp Vapour compression machine supercharging heating is crossed, the light component steam after compression is used as the thermal source of reboiler, the condensed device of reboiler discharge liquor It is divided into two parts, part discharge, a part of phegma as rectifying column tower after cooling;
In above-mentioned 4 grades of heat pump separators, the methanol solution in the 1st grade of heat pump separator into rectifying column tower is thick first The methanol solution for entering rectifying column tower in alcohol, the 2nd to 4 grade of heat pump separator is the rectifying column of upper level heat pump separator The solution that the outlet of tower body is excluded.
6. methanol heat-pump rectificating method according to claim 4, it is characterised in that:The rectifying column tower operating pressure at different levels For 100kPa-800kPa, reflux ratio is 1.5-5;Described vapour compression machine, compression ratio is 1.5-3.63.
CN201710243313.3A 2017-04-14 2017-04-14 Methanol heat-pump distillation system and method Pending CN106957214A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107694138A (en) * 2017-10-11 2018-02-16 肥城金威机械有限公司 Rectifier unit, method and its application for fusel oil
CN109665940A (en) * 2019-01-07 2019-04-23 天津乐科节能科技有限公司 Methanol is from backheat distillation system and application
CN109745724A (en) * 2019-01-24 2019-05-14 山东伯仲真空设备股份有限公司 MVR rectifying stripping set composite and its process
CN110963890A (en) * 2019-12-30 2020-04-07 中国天辰工程有限公司 Refining method of gaseous methanol
CN111995499A (en) * 2020-08-26 2020-11-27 吴嘉 Methanol heat pump rectification method and device
CN113024354A (en) * 2019-12-09 2021-06-25 中国科学院大连化学物理研究所 Heat pump rectification system for dehydrating biomass ethylene glycol

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101786940A (en) * 2010-03-05 2010-07-28 惠生工程(中国)有限公司 Methanol heat-pump rectifying process
CN103566613A (en) * 2012-08-06 2014-02-12 南通醋酸纤维有限公司 Rectification device and process for low-concentration organic solvent aqueous liquor recycling heat pump
CN105669362A (en) * 2016-03-14 2016-06-15 江苏乐科节能科技股份有限公司 Trichloromethane solvent recovery heat pump rectification process
CN105669412A (en) * 2016-03-14 2016-06-15 江苏乐科节能科技股份有限公司 Acetone solvent recovery heat-pump distillation technology
CN105749573A (en) * 2016-03-14 2016-07-13 江苏乐科节能科技股份有限公司 Heat-pump distillation system, heat-pump distillation method and application of heat-pump distillation method to ethanol recovery
CN205549650U (en) * 2016-03-14 2016-09-07 江苏乐科节能科技股份有限公司 Heat pump rectification system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101786940A (en) * 2010-03-05 2010-07-28 惠生工程(中国)有限公司 Methanol heat-pump rectifying process
CN103566613A (en) * 2012-08-06 2014-02-12 南通醋酸纤维有限公司 Rectification device and process for low-concentration organic solvent aqueous liquor recycling heat pump
CN105669362A (en) * 2016-03-14 2016-06-15 江苏乐科节能科技股份有限公司 Trichloromethane solvent recovery heat pump rectification process
CN105669412A (en) * 2016-03-14 2016-06-15 江苏乐科节能科技股份有限公司 Acetone solvent recovery heat-pump distillation technology
CN105749573A (en) * 2016-03-14 2016-07-13 江苏乐科节能科技股份有限公司 Heat-pump distillation system, heat-pump distillation method and application of heat-pump distillation method to ethanol recovery
CN205549650U (en) * 2016-03-14 2016-09-07 江苏乐科节能科技股份有限公司 Heat pump rectification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
叶鑫等: "甲醇热泵精馏新工艺", 《化工进展》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107694138A (en) * 2017-10-11 2018-02-16 肥城金威机械有限公司 Rectifier unit, method and its application for fusel oil
CN109665940A (en) * 2019-01-07 2019-04-23 天津乐科节能科技有限公司 Methanol is from backheat distillation system and application
CN109745724A (en) * 2019-01-24 2019-05-14 山东伯仲真空设备股份有限公司 MVR rectifying stripping set composite and its process
CN113024354A (en) * 2019-12-09 2021-06-25 中国科学院大连化学物理研究所 Heat pump rectification system for dehydrating biomass ethylene glycol
CN110963890A (en) * 2019-12-30 2020-04-07 中国天辰工程有限公司 Refining method of gaseous methanol
CN110963890B (en) * 2019-12-30 2024-04-16 中国天辰工程有限公司 Refining method of gaseous methanol
CN111995499A (en) * 2020-08-26 2020-11-27 吴嘉 Methanol heat pump rectification method and device

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