CN202744473U - Poly-generation device for producing olefin by taking coal and natural gas as raw materials - Google Patents
Poly-generation device for producing olefin by taking coal and natural gas as raw materials Download PDFInfo
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- CN202744473U CN202744473U CN2012203008213U CN201220300821U CN202744473U CN 202744473 U CN202744473 U CN 202744473U CN 2012203008213 U CN2012203008213 U CN 2012203008213U CN 201220300821 U CN201220300821 U CN 201220300821U CN 202744473 U CN202744473 U CN 202744473U
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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
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/40—Ethylene production
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Abstract
The utility model relates to a poly-generation device for producing olefin by taking coal and natural gas as raw materials. The poly-generation device consists of a coal gasifier, a purification device, a desulfurizing tower, a natural gas reforming reactor, a compressor, a synthesis gas mixer, a fine desulfurizing tower, a methanol synthesis tower, a methanol rectifying tower, a gas turbine combined generator, an MTO (Methanol To Olefins) device and a circulating compressor, wherein the coal gasifier, the purification device, the desulfurizing tower, the synthesis gas mixer, the fine desulfurizing tower, the methanol synthesis tower and the methanol rectifying tower are sequentially connected with one another; the methanol synthesis tower is connected with the MTO device; a non-reactant gas outlet of the methanol synthesis tower is connected with the gas turbine combined generator; the inlet of the natural gas reforming reactor is connected with a raw natural gas material pipeline, while the outlet of the natural gas reforming reactor is connected with the synthesis gas mixer through the compressor; and the natural gas reforming reactor is connected with the methanol synthesis tower through the circulating compressor. The poly-generation device can be used for alleviating the serious imbalance of a ratio of hydrogen to carbon in a process for producing the olefin by the coal, decreasing consumption of natural gas, energy consumption of a system and emission of CO2, and reducing the cost.
Description
Technical field
The utility model relates to a kind of multi-joint-production apparatus take coal and Sweet natural gas as raw material alkene processed.
Background technology
Ethene, propylene are the most basic raw materials of petrochemical industry, and the output of ethene just is considered to the sign of national economic development level, and along with the development of China's economy and society, still can keep higher rigid demand future.Traditional ethylene production is mainly take ethane, propane, petroleum naphtha, LIGHT DIESEL OIL as raw material, by the tube furnace preparing ethylene by steam cracking, but Chinese lighter hydrocarbons and petroleum resources are very limited, can not satisfy ethene lighting ingredient requirement, and the rising steadily of crude oil price, so that the product cost of traditional ethylene production technique is higher.
Through development for many years, the technology of tube furnace steam cracking ethene is quite ripe, aspect reduction energy consumption, raising yield of ethene, the device stability larger progress is being arranged.But the steam cracking temperature is high, and equipment material is required harshness, and plant investment is expensive, and requiring to reach certain economic level on the scale just can have preferably benefit repayment.Thereby regional development less in refinery's scale or that the raw material supply condition is relatively poor is restricted.In recent years, development several novel ethene reparation technologies that get up.
More advanced technique has Sweet natural gas ethene processed, low-carbon alkene ethene processed, coal-methanol-to-olefins etc. several at present.In the On Ethylene Process Using Natural Gas As Feedstock, at first need to carry out producing synthetic gas by natural gas conversion, then be used for synthesizing alkene, the major advantage of this technique is that flow process is short, facility investment is lower, CO
2Discharging is few.But the synthetic gas H that adopts natural gas steam reforming to obtain
2/ CO is generally 2.5～3.0, and its value is higher, needs to replenish CO before derived product is synthetic
2Reduce H
2/ CO needs the additive decrementation energy, and the fuel natural gas that needs during conversion of natural gas accounts for 1/3 of Sweet natural gas total burn-off, and gas consumption is large.If can replace the larger fuel natural gas of consumption in traditional conversion process with other cheap fuel, will significantly reduce production costs.
Take coal as raw material, via the route of methyl alcohol preparing ethylene, become the focus of current focus, along with the operation of several demonstration projects, the olefin hydrocarbon making by coal project enters the development and improvement stage successively, and product competitiveness and project economics obtain fine development.The synthetic gas H that adopts producing synthesis gas from coal technique to make
2/ CO＜1, its value is on the low side, and derived product often needs further the CO in the water-gas to be transformed to H when synthetic
2Improve H
2/ CO has produced again CO in the time of conversion
2, increased CO
2To the discharging of environment, and reclaiming CO
2, remove CO
2With need to consume additional energy in the process of CO conversion so that the energy utilization efficiency of system is lower.
The utility model content
The purpose of this utility model provides a kind of multi-joint-production apparatus take coal and Sweet natural gas as raw material alkene processed, this technique is according to the characteristics of producing synthesis gas from coal " the many hydrogen of carbon are few ", Sweet natural gas synthetic gas " the few hydrogen of carbon is many ", Utilization of Coal and Sweet natural gas are the waste olefin product, the unreacting gas alternative fuel Sweet natural gas that simultaneously methyl alcohol is synthesized, be sent to the reforming reactor combustion chambers burn, the heat that provides natural gas gasifying to need.Comprehensive utilization by the energy has reduced product energy consumption, has reached the purpose of recycling economy.This device has embodied the circular economy concept of " minimizing, recirculation, recycling ", and the main products market outlook are wide, have the stronger market competitiveness.
Multi-joint-production apparatus take coal and Sweet natural gas as raw material alkene processed described in the utility model comprises: coal gasifier, refining plant, thionizer, gas renormalizing reactor, compressor, synthetic gas mixing tank, smart thionizer, methyl alcohol synthetic reactor, methanol rectifying tower, combustion turbine combined power generation assembly, MTO device and recycle compressor; Coal gasifier, refining plant, thionizer, synthetic gas mixing tank, smart thionizer, methyl alcohol synthetic reactor, methanol rectifying tower connect successively, and methyl alcohol synthetic reactor is connected with the MTO device; The outlet of methyl alcohol synthetic reactor unreacting gas is connected with combustion turbine combined power generation assembly; The gas renormalizing reactor inlet is connected with the gas material pipeline, and outlet is connected with the synthetic gas mixing tank by compressor; The gas renormalizing reactor is connected with methyl alcohol synthetic reactor by recycle compressor.
Multi-production process take coal and Sweet natural gas as waste alkene may further comprise the steps: feed coal carries out primary purifying and desulfurization is processed at refining plant, thionizer after gasifying in coal gasifier with water vapour, oxygen after pretreatment; Carry out at methyl alcohol synthetic reactor after being mixed in proportion with producing synthesis gas from coal behind the natural gas via gas renormalizing reactor reaction that methyl alcohol is synthetic and alkene synthetic, the synthetic unreacting gas part of methyl alcohol circulates, and another part is sent to gas turbine power generation.
Described coal gasifier adopts Texaco's air flow bed coal slurry gasifier.
Described gas renormalizing reactor adopts steam reforming method reactor.
Described methyl alcohol synthetic reactor adopts the strange low pressure synthetic tower in Shandong.
The synthetic Dalian DMTO of the Chemistry and Physics Institute device that adopts of described alkene.
This technique specific implementation method may further comprise the steps:
1. raw coal gasification and purification
Feed coal carries out gasification reaction with water vapour, oxygen after pretreatment under the condition of 1200 ℃ of pressure 5.2MPa and temperature, mainly contained CO, H
2, CO
2Water-gas, water-gas obtains just purifying waste water coal gas through rough purification.
2. desulfurization
Can adopt low-temperature rectisol method or domestic ripe NHD method or other Wet Flue Gas Desulfurization Technique, desulfurization of water gas is purified to total sulfur content≤10mg/Nm with water-gas after processing
3, the water-gas after being purified.
3. gas renormalizing
Carry out reforming reaction after Sweet natural gas and water vapour mix under the condition of 860 ℃ of pressure 2.5MPa, temperature, the synthetic gas of generation reclaims heat in interchanger, be used for the mixture of preheating Sweet natural gas and water vapour, subsequently for the production of saturation steam.
4. synthetic gas mixes
After producing synthesis gas from natural gas is pressurized to 5.2Mpa, the hydrogen-carbon ratio (H that needs according to methanol production with water-gas after purifying
2-CO)/(CO
2+ CO) be 2.05～2.10 to mix, obtain the target synthetic gas.
5. smart desulfurization is processed and is obtained methyl methanol syngas
Adopt dry-desulphurizer that the target synthetic gas is carried out smart desulfurization and process, the total sulfur content in the gas mixture is taken off to 0.1ppm, obtain qualified methyl alcohol synthetic raw gas.
6. synthesizing methanol
Be sent to methyl alcohol synthetic reactor after qualified synthetic gas obtained above is compressed, the preheating, in pressure 5MPa, 250 ℃ of lower reactions of temperature, the reaction product that methyl alcohol synthetic reactor is discharged is isolated thick methyl alcohol after cooling, and thick methyl alcohol obtains refined methanol through rectifying.
7. combustion turbine combined generating
Unreacting gas after methyl alcohol is synthetic is sent to combustion aircraft turbine engine combustion chambers burn, the combustion gas that produces 1260 ℃ High Temperature High Pressure is discharged from the combustion chamber, then send into the turbine expansion acting, 560 ℃ the high-temperature flue gas of discharging reclaims sensible heat through waste heat boiler and produces superheated vapour, drives steam turbine generating and heat supply.
8. synthesize alkene
(1) with above-mentioned methyl alcohol under pressure 0.4MPa, 450 ℃ of conditions of temperature, send into the MTO device, methanol feedstock is contacted with silicon aluminium phosphate molecules of salt sieve catalyst.Methanol conversion is become contain the product stream of ethene, propylene, and form carbon deposit at described catalyzer.
(2) with described product stream and catalyst separating, isolated catalyzer with carbon deposit is sent into revivifier regeneration.
(3) catalyzer through regeneration turns back to reaction zone.
The utility model technology has the following advantages:
(1) energy consumption is low.The utility model can be as the case may be, by adjusting the ratio of feed coal and Sweet natural gas, to the H of synthetic gas
2/ CO adjusts and satisfies the synthetic demand of derived product, has remedied the serious unbalanced problem of simple employing coal or gas material hydrogen-carbon ratio, has realized the mutual supplement with each other's advantages of two kinds of raw materials, and this technique has been saved recovery CO
2, CO conversion and remove CO
2Energy consumption.
(2) CO
2Discharge low.Multi-production process take coal as raw material need to lean on the CO conversion to improve H2/CO, and can produce a large amount of CO in the conversion process
2, increased CO
2Discharging.And the utility model is realized by adjusting coal, Sweet natural gas ratio merely the requirement of the synthetic H2/CO of methyl alcohol need not to carry out conversion, CO
2Discharge lower.
(3) degree of coupling is high.The utility model is take coal and Sweet natural gas as raw material, while methanol, alkene, power product, the system set degree is high, the energy situation of links is good, whole technological process steam and electric power are self-supporting, need not to compare with domestic advanced person's olefin hydrocarbon making by coal technique for steam and electric weight outward, capacity usage ratio improves approximately 5%.
Description of drawings
Fig. 1 is this multi-joint-production apparatus figure take coal and Sweet natural gas as raw material alkene processed.
Embodiment
Multi-joint-production apparatus take coal and Sweet natural gas as raw material alkene processed described in the utility model comprises: coal gasifier, refining plant, thionizer, gas renormalizing reactor, compressor, synthetic gas mixing tank, smart thionizer, methyl alcohol synthetic reactor, methanol rectifying tower, combustion turbine combined power generation assembly, MTO device and recycle compressor; Coal gasifier, refining plant, thionizer, synthetic gas mixing tank, smart thionizer, methyl alcohol synthetic reactor, methanol rectifying tower connect successively, and methyl alcohol synthetic reactor is connected with the MTO device; The outlet of methyl alcohol synthetic reactor unreacting gas is connected with combustion turbine combined power generation assembly; The gas renormalizing reactor inlet is connected with the gas material pipeline, and outlet is connected with the synthetic gas mixing tank by compressor; The gas renormalizing reactor is connected with methyl alcohol synthetic reactor by recycle compressor.
Claims (5)
1. multi-joint-production apparatus take coal and Sweet natural gas as raw material alkene processed, comprise: coal gasifier, refining plant, thionizer, gas renormalizing reactor, compressor, synthetic gas mixing tank, smart thionizer, methyl alcohol synthetic reactor, methanol rectifying tower, combustion turbine combined power generation assembly, MTO device and recycle compressor; It is characterized in that:
Coal gasifier, refining plant, thionizer, synthetic gas mixing tank, smart thionizer, methyl alcohol synthetic reactor, methanol rectifying tower connect successively, and methyl alcohol synthetic reactor is connected with the MTO device; The outlet of methyl alcohol synthetic reactor unreacting gas is connected with combustion turbine combined power generation assembly; The gas renormalizing reactor inlet is connected with the gas material pipeline, and outlet is connected with the synthetic gas mixing tank by compressor; The gas renormalizing reactor is connected with methyl alcohol synthetic reactor by recycle compressor.
2. according to claim 1 take coal and Sweet natural gas as the multi-joint-production apparatus of raw material alkene processed, it is characterized in that: described coal gasifier adopts Texaco's air flow bed coal slurry gasifier.
3. according to claim 1 take coal and Sweet natural gas as the multi-joint-production apparatus of raw material alkene processed, it is characterized in that: the gas renormalizing reactor adopts steam reforming method reactor.
4. according to claim 1 take coal and Sweet natural gas as the multi-joint-production apparatus of raw material alkene processed, it is characterized in that: methyl alcohol synthetic reactor adopts the strange low pressure synthetic tower in Shandong.
5. according to claim 1 take coal and Sweet natural gas as the multi-joint-production apparatus of raw material alkene processed, it is characterized in that: the MTO device adopts the Dalian DMTO of Chemistry and Physics Institute device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203008213U CN202744473U (en) | 2012-06-21 | 2012-06-21 | Poly-generation device for producing olefin by taking coal and natural gas as raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203008213U CN202744473U (en) | 2012-06-21 | 2012-06-21 | Poly-generation device for producing olefin by taking coal and natural gas as raw materials |
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|---|---|
| CN202744473U true CN202744473U (en) | 2013-02-20 |
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|---|---|---|---|
| CN2012203008213U Expired - Fee Related CN202744473U (en) | 2012-06-21 | 2012-06-21 | Poly-generation device for producing olefin by taking coal and natural gas as raw materials |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098419A (en) * | 2014-07-28 | 2014-10-15 | 神华集团有限责任公司 | System and method for preparing low-carbon olefin through adopting coal, natural gas and methyl alcohol |
| CN104628508A (en) * | 2015-01-30 | 2015-05-20 | 华南理工大学 | System and process for preparing alkene from raw materials of coal and natural gas by virtue of synthesis |
| CN109927850A (en) * | 2019-03-18 | 2019-06-25 | 上海惠生海洋工程有限公司 | A kind of methanol from natural gas and methanol storage handler of floating |
-
2012
- 2012-06-21 CN CN2012203008213U patent/CN202744473U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098419A (en) * | 2014-07-28 | 2014-10-15 | 神华集团有限责任公司 | System and method for preparing low-carbon olefin through adopting coal, natural gas and methyl alcohol |
| CN104098419B (en) * | 2014-07-28 | 2016-10-05 | 神华集团有限责任公司 | Coal, natural gas combination preparing light olefins from methanol system and method |
| CN104628508A (en) * | 2015-01-30 | 2015-05-20 | 华南理工大学 | System and process for preparing alkene from raw materials of coal and natural gas by virtue of synthesis |
| CN109927850A (en) * | 2019-03-18 | 2019-06-25 | 上海惠生海洋工程有限公司 | A kind of methanol from natural gas and methanol storage handler of floating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130220 Termination date: 20210621 |