CN203998942U - A kind of synthetic gas sulfur-resisting transformation system of economy - Google Patents
A kind of synthetic gas sulfur-resisting transformation system of economy Download PDFInfo
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- CN203998942U CN203998942U CN201420360516.2U CN201420360516U CN203998942U CN 203998942 U CN203998942 U CN 203998942U CN 201420360516 U CN201420360516 U CN 201420360516U CN 203998942 U CN203998942 U CN 203998942U
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Abstract
A kind of synthetic gas sulfur-resisting transformation system of economy, comprise low temperature buffer strainer, outer piping lane synthetic gas is entered by low temperature buffer strainer, after heating, humidification, entering high-temperature filter filters, go out the synthetic gas of high-temperature filter, enter the top of shift converter one, in shift converter one, comprise top catalyst protection bed, upper beds one and lower beds one, the synthetic gas that goes out shift converter one enters the top of shift converter two through humidifying cooling, in shift converter two, comprise beds two and lower beds two, between shift converter one and shift converter two, be provided with humidifier group, for going out the synthetic gas humidifying cooling of beds, go out the conversion gas of shift converter two bottoms, through cooling, enter conversion gas water trap, the gas that goes out conversion gas water trap enters depickling gas workshop section, liquid after filtration, after stripping and preheating, do the make up water of humidifier, the utlity model has facility investment few, catalyzer long service life, the feature that feedwater and steam consumption are few.
Description
Technical field
The utility model belongs to clean coal technical field of power generation, particularly a kind of synthetic gas sulfur-resisting transformation system of economy.
Background technology
Global Environmental Problems taking climate change as core is day by day serious, has become one of principal element threatening human kind sustainable development, and cutting down greenhouse gas emission becomes with mitigation of climate change the focus that current international community is paid close attention to.IPCC the Fourth Assessment Report is thought, the burning of 50 years fossil oils is mainly come from in the rising of greenhouse gases.Wherein, coal fired power generation is obviously a large discharger of greenhouse gases.Therefore, optimize coal generating system technical process, improve the utilising efficiency of coal, the micro-discharge that reaches carbonic acid gas will become a quantum jump of coal power generation technology.
The sulfur-resisting transformation of synthetic gas, is converted into synthetic gas taking carbonic acid gas, hydrogen as main conversion gas, reclaims the heat in conversion process.Conversion gas, through separating, after desulfurization and decarburization, obtains Liquid carbon dioxide, liquid hydrogen, and sulphur removes with the form of solid sulfur.So both solved environmental problem, improved again generating efficiency, for coal fired power generation brings the light attracting people's attention.
The technique of sulfur-resisting transformation mainly contains two kinds at present: the first, the sulfur-resisting transformation of Shell synthesis gas from coal gasification, divide four sections of beds, there is no catalyst protection layer, cause one section of transformationreation impellent larger, cause reaction to be difficult to control, once one section of map function deterioration, also by the transformationreation directly having influence on below; The second, the sulfur-resisting transformation of high pressure (about 8.0MPa) and high steam-to-gas ratio (approximately 1.4), complex process, energy consumption is large.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of synthetic gas sulfur-resisting transformation system of economy, have that facility investment is few, low in the pollution of the environment, energy utilization fully, the feature of catalyzer long service life, resource and energy saving.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of synthetic gas sulfur-resisting transformation system of economy, comprise the low temperature buffer strainer 8 that connects outer piping lane synthetic gas, the outlet of low temperature buffer strainer 8 be connected with the entrance of high-temperature filter 7 and connecting pipeline on be provided with heat exchanger 12, the steam water trap 6 of well heater 13 and supplementary steam, the outlet of high-temperature filter 7 connects the top inlet mouth of shift converter 1, in shift converter 1, comprise top catalyst protection bed a, upper beds one b and lower beds one c, go out the top entrance of the synthetic gas access shift converter 22 of shift converter 1, in shift converter 22, comprise beds two d and lower beds two e, between shift converter 1 and shift converter 22, be provided with humidifier group, the air outlet, bottom of shift converter 22 connects conversion gas water trap 11, the air outlet of conversion gas water trap 11 meets depickling gas workshop section, water outlet connects humidifier group.
Described humidifier group comprises humidifier 1, humidifier 24 and humidifier 35, the synthetic gas that goes out upper beds one b enters lower beds one c after humidifier 1, the synthetic gas that goes out lower beds one c enters upper beds two d after humidifier 24, and the synthetic gas that goes out upper beds two d enters lower beds two e after humidifier 35.
On the fluid pipeline of described conversion gas water trap 11, be provided with water of condensation strainer 10, soul water stripper 9, feedwater buffering filling 18, feedwater force (forcing) pump 14 and feed water preheater 17, go out the process liquid of conversion gas water trap 11, fill with 18, feed water after force (forcing) pump 14 and feed water preheater 17 through water of condensation strainer 10, soul water stripper 9, feedwater buffering successively, as humidifier group make up water, be sent to humidifier group.
Compared with prior art, the beneficial effects of the utility model are:
1. be the raw material humidifying cooling into every section of bed with steam water trap, can avoid, with interchanger cooling, reducing facility investment.
2. conversion top protection section absorption dust, impurity, protect one section of catalyzer, and carry out certain transformationreation, alleviates the load of primary reformer.
3. by fully recovering after unreacted process condensate depickling gas, save feedwater consumption.
4. low grade residual heat is used for heating the regeneration of MDEA rich solution, steam saving consumption.
5. optimize conversion heat exchange process, reduce middle pressure steam consumption.
Brief description of the drawings
Fig. 1 is the utility model system architecture schematic diagram.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of synthetic gas sulfur-resisting transformation system of economy, comprise the low temperature buffer strainer 8 that connects outer piping lane synthetic gas, the outlet of low temperature buffer strainer 8 be connected with the entrance of high-temperature filter 7 and connecting pipeline on be provided with heat exchanger 12 and well heater 13, the outlet of high-temperature filter 7 connects the top inlet mouth of shift converter 1, in shift converter 1, comprise top catalyst protection bed a, upper beds one b and lower beds one c, go out the top entrance of the synthetic gas access shift converter 22 of shift converter 1, in shift converter 22, comprise beds two d and lower beds two e, between shift converter 1 and shift converter 22, be provided with by humidifier 1, the humidifier group of humidifier 24 and humidifier 35 compositions, the synthetic gas that goes out upper beds one b enters lower beds one c after humidifier 1, the synthetic gas that goes out lower beds one c enters upper beds two d after humidifier 24, the synthetic gas that goes out upper beds two d enters lower beds two e after humidifier 35.The air outlet, bottom of shift converter 22 connects conversion gas water trap 11, on the outlet pipeline of conversion gas water trap 11, be disposed with water of condensation strainer 10, soul water stripper 9, feedwater buffering filling 18 and feedwater force (forcing) pump 14, on the air outlet, bottom of shift converter 22 and conversion gas water trap 11 connecting pipelines, be provided with feed water preheater 17, rich solution well heater 16 and water recirculator 15, humidifier 1, humidifier 24 and humidifier 35 are sent in the water outlet of feedwater force (forcing) pump 14 after feed water preheater 17 simultaneously.
Based on said system, the technological process of the utility model synthesis gas from coal gasification sulfur-resisting transformation system is as follows:
From the synthetic gas of outer piping lane, first enter low temperature buffer strainer 8, to remove particulate matter and the water smoke carried secretly in gas, then enter heat exchanger 12, heated by the pyroreaction gas from second-stage reaction gas.For improving the water to steam ratio in unstripped gas, the middle pressure saturation steam coming from outer piping lane joins the unstripped gas after preheating after point water and Flow-rate adjustment, enters successively shift converter 1 and shift converter 22 after high-temperature filter 7 is removed water smoke.In shift converter 1 and shift converter 22, process is:
First pass through the top catalyst protection bed a of shift converter 1, absorption dust impurity, protects one section of catalyzer, and carries out certain transformationreation, alleviates the load of a section, finally obtains one section of reaction gas; Then one section of reaction gas enters beds one b, by after carry out humidification through humidifier 1, then enter lower beds one c, by after obtain second-stage reaction gas; Second-stage reaction pneumatic transmission enters heat exchanger 12 and carries out recovery of heat, then by humidifier 24 humidifications, is sent to beds two d, by after obtain three sections of reaction gases; Three sections of reaction gases carry out humidification by humidifier 35, are then sent to lower beds two e, by after obtain four sections of reaction gases.
In four sections of reaction gases, CO concentration is less than 1%, and after feed water preheater 17, rich solution well heater 16, water recirculator 15 and conversion gas water trap 11, isolated gas send MDEA depickling gas workshop section successively; The isolated sour water of conversion gas water trap 11 enters feedwater surge tank 18 after soul water stripper 9, send each humidifier with the hydration of outer tinkering a pan stove and through stage pump supercharging preheating.
H in the raw materials used gas of this technique
2more than S content reaches 1000ppm, simultaneously for reducing energy consumption, improving CO transformation efficiency, design adopts the cobalt molybdenum total lts of resistance to sulphur technique, and the catalyzer in upper beds one b, lower beds one c, upper beds two d and lower beds two e is the como shift catalyst of resistance to sulphur.The cobalt-molybdenum catalyst adopting has organosulfur hydrocon version functionality simultaneously, has saved independent organosulfur treatment unit.The same with other most catalyzer, cobalt-molybdenum catalyst also needs oxidized catalyst to activate before use:
CoO+H
2s=CoS+H
2o heat release
MoO+H
2s=MoS+H
2o heat release
Sulphur source adopts CS conventionally
2filling into fresh synthesis gas obtains:
CS
2+ 4H
2=CH4+2H
2s heat absorption
Also have and adopt solid hydrogen sulfide generator.
For ensureing the reduction degree of depth and the generation of avoiding side reaction, the H in reducing gas
2s concentration must maintain in higher level, in other words along with reaction is carried out, must constantly fill into sub-fraction fresh synthesis gas and sulphur source, discharges the gas of equivalent simultaneously.Because discharge wherein contains very high hydrogen sulfide (15～20g/nm
3), thereby need to be processed rear discharge, usual method is with passing through torch emptying.Most of reducing gas is by recycle compressor at system internal recycle in addition, and catalyzer reduction in about 3～5 years once.
Claims (3)
1. an economic synthetic gas sulfur-resisting transformation system, it is characterized in that, comprise the low temperature buffer strainer (8) that connects outer piping lane synthetic gas, the outlet of low temperature buffer strainer (8) be connected with the entrance of high-temperature filter (7) and connecting pipeline on be provided with heat exchanger (12), the steam water trap (6) of well heater (13) and supplementary steam, the outlet of high-temperature filter (7) connects the top inlet mouth of shift converter one (1), in shift converter one (1), comprise top catalyst protection bed (a), upper beds one (b) and lower beds one (c), go out the top entrance of the synthetic gas access shift converter two (2) of shift converter one (1), in shift converter two (2), comprise beds two (d) and lower beds two (e), between shift converter one (1) and shift converter two (2), be provided with humidifier group, the air outlet, bottom of shift converter two (2) connects conversion gas water trap (11), the air outlet of conversion gas water trap (11) meets depickling gas workshop section, water outlet connects humidifier group.
2. the synthetic gas sulfur-resisting transformation system of economy according to claim 1, it is characterized in that, described humidifier group comprises humidifier one (3), humidifier two (4) and humidifier three (5), the synthetic gas that goes out upper beds one (b) enters lower beds one (c) after humidifier one (3), the synthetic gas that goes out lower beds one (c) enters upper beds two (d) after humidifier two (4), the synthetic gas that goes out upper beds two (d) enters lower beds two (e) after humidifier three (5).
3. the synthetic gas sulfur-resisting transformation system of economy according to claim 2, it is characterized in that, on the fluid pipeline of described conversion gas water trap (11), be provided with water of condensation strainer (10), soul water stripper (9), feedwater buffering is filled with (18), feedwater force (forcing) pump (14) and feed water preheater (17), go out the process liquid of conversion gas water trap (11), pass through successively water of condensation strainer (10), soul water stripper (9), feedwater buffering is filled with (18), after feedwater force (forcing) pump (14) and feed water preheater (17), as humidifier group make up water, be sent to humidifier group.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085854A (en) * | 2014-07-01 | 2014-10-08 | 中国华能集团清洁能源技术研究院有限公司 | Economic synthesis gas sulfur-resisting transformation process and system |
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2014
- 2014-07-01 CN CN201420360516.2U patent/CN203998942U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085854A (en) * | 2014-07-01 | 2014-10-08 | 中国华能集团清洁能源技术研究院有限公司 | Economic synthesis gas sulfur-resisting transformation process and system |
| CN104085854B (en) * | 2014-07-01 | 2015-12-30 | 中国华能集团清洁能源技术研究院有限公司 | A kind of synthetic gas sulfur resistant conversion process of economy and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20160602 Address after: 100031 Beijing, Xicheng District, the door of the revitalization of the main street, No. 6 Patentee after: Huaneng Power International, Inc. Patentee after: China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. Address before: 102209 Beijing City, Beiqijia Town, the future of science and Technology City Huaneng innovation base experimental building, A floor, Patentee before: China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. |