CN205127735U - Gaseous phase demercuration device based on chemisorption - Google Patents
Gaseous phase demercuration device based on chemisorption Download PDFInfo
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- CN205127735U CN205127735U CN201520938325.4U CN201520938325U CN205127735U CN 205127735 U CN205127735 U CN 205127735U CN 201520938325 U CN201520938325 U CN 201520938325U CN 205127735 U CN205127735 U CN 205127735U
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Abstract
(B, ) the utility model relates to a chemisorption technology and technical field are gaseous phase demercuration device based on chemisorption, and it includes heat recovery ware, air cooler, branch fluid reservoir, drier -filter, adsorption tower, fixed mounting is gone up in the thermal medium import of heat recovery ware has the feed gas pipeline, and fixed mounting has air cooler feed pipeline between the thermal medium export of heat recovery ware and the import of air cooler. (B, ) (b) the internal and external network physical isolation data exchange device is reasonable and compact in structure, it has effectively solved high temperature, low pressure, a high moisture gaseous phase demercuration difficult problem, especially, ethylene glycol regeneration top of the tower noncondensable gas high temperature, low pressure, a high moisture demercuration difficult problem, the novel heliostat of the utility model has excellent adaptability, and operation cost is low, the characteristics that the reliability is high, gas field manufacturing cost has greatly been reduced, energy is saved, for it provides technical support to have built ethylene glycol regenerating unit gaseous phase demercuration at home, it lays a good foundation in the application of mercurous gas field to take off hydrocarbon technology for low temperature separation method from now on. (B, )
Description
Technical field
the utility model relates to chemisorption and device technique field thereof, is a kind of gas phase mercury removal device based on chemisorbed.
Background technology
the discharge of mercury vapour will cause the pollution of atmospheric environment, it can also be accumulated in vivo, and along food chain enrichment, possesses the feature that long range propagation pollutes, because of but the whole world problem of showing great attention to, heavy metal has non-degradable, once discharge, its pollution has chronicity, " heavy metal pollution integrated control 12 planning " of the establishment of national environmental protection portion is by arsenic, plumbous, mercury, chromium, the heavy metals such as cadmium list High risk population in, country current standard " discharge standard of air pollutants " GB16297-1996 clear stipulaties, mercury and mercuric compounds maximal emission requires to be less than 12 μ g/m
3
.
gas gathering and transportation, processing system contains wide, relate to gas dehydration and take off hydrocarbon, condensate fractionation stabilization, the regeneration of ethylene glycol concentrate and production waste discharge etc., ethylene glycol is as hyrate inhibitor, at gas dehydration, de-hydrocarbon low temperature separating process is used widely, the collection of natural gas, process and transmission & distribution are complicated Systematical control engineerings, along with the prolongation of Development life, extraction natural gas in part gas field starts to occur mercury, for mercurous gas field, part mercury can with natural gas extraction in the lump, mercurous natural gas is when the field, station of the hydrocarbon removal process that dewaters adopts low temperature processing to carry out cryogenic separation, a large amount of mercury will be condensed, enter into liquid hydrocarbon, ethylene glycol water system, ethylene glycol rich solution after water suction needs thermal regeneration concentrate when recycling, during concentrate, the mercury of more than 90% will be discharged with fixed gas, cause tower top discharge bicycle pump content severe overweight, all take to improve the unstripped gas demercuration degree of depth to reduce glycol system mercury content at present.Chemiadsorption is all better than other method in economy, demercuration effect and environmental protection etc., at home and abroad be used widely in gas phase mercury removal device, demercuration adsorbent conventional both at home and abroad has sulfur loading active carbon, load type metal sulfide and metal oxide, performance of the adsorbent is very responsive to free water, drop, and glycol recycling tower top fixed gas low pressure, high temperature, supersaturation are moisture, absorption method is thus directly adopted to be difficult to meet the demands.Another for the mercurous gas field of high pressure, existing low temperature separating process is difficult to solve glycol system regeneration fixed gas height containing mercury removal problem, having to, selection investment is high, operating cost is high, other dehydration hydrocarbon removal process of complicated operation, gas field self-energy is not fully utilized, and reduces gas field development economic benefit.
Summary of the invention
the utility model provides a kind of gas phase mercury removal device based on chemisorbed, overcome the deficiency of above-mentioned prior art, it effectively can solve low pressure, high temperature, the moisture gas phase of supersaturation, and there is performance of the adsorbent when adopting chemiadsorption to carry out demercuration very responsive and cause the problem being difficult to remove mercury to free water, drop.
the technical solution of the utility model is realized by following measures: a kind of gas phase mercury removal device based on chemisorbed, comprises thermal energy recoverer, air cooler, point flow container, device for drying and filtering, adsorption tower, the thermal medium inlet of thermal energy recoverer is installed with unstripped gas pipeline, air cooler feeding line is installed with between the thermal medium outlet of thermal energy recoverer and the import of air cooler, a point flow container feeding line is installed with between the charging aperture of air cooler and point flow container, the bottom of flow container is divided to be installed with sewage discharge pipeline, divide between the top of flow container and the charging aperture of device for drying and filtering and be installed with mercurous gas pipeline, dry mercurous gas pipeline is installed with between the discharging opening of device for drying and filtering and the cold medium entrance of thermal energy recoverer, mercurous fixed gas pipeline is installed with between the cold media outlet of thermal energy recoverer and the charging aperture of adsorption tower, the top of adsorption tower is installed with demercuration fixed gas pipeline.
here is the further optimization and/or improvements to above-mentioned utility model technical scheme:
said apparatus also comprises adsorption tower for subsequent use, is installed with adsorption tower feeding line for subsequent use between mercurous fixed gas pipeline and adsorption tower for subsequent use, is installed with adsorption tower discharging pipeline for subsequent use between adsorption tower for subsequent use and demercuration fixed gas pipeline.
above-mentioned mercurous fixed gas pipeline between adsorption tower feeding line for subsequent use and adsorption tower is provided with valve, demercuration fixed gas pipeline between adsorption tower and adsorption tower discharging pipeline for subsequent use is provided with valve, adsorption tower feeding line for subsequent use and adsorption tower discharging pipeline for subsequent use are respectively arranged with valve.
above-mentionedly on the mercurous gas pipeline of drying, be installed with blower fan.
silica gel or molecular sieve or activated alumina is filled with in above-mentioned device for drying and filtering.
the above-mentioned exit at adsorption tower is provided with sample tap, and adsorption tower is provided with differential pressure measuring device, and point flow container is provided with differential pressure measuring device, liquid level detection device and fluid level control device.
above-mentionedly also comprise skid base thermal energy recoverer, air cooler, point flow container, device for drying and filtering, adsorption tower, adsorption tower for subsequent use and a blower fan be all arranged on skid base.
the utility model reasonable and compact in structure, it efficiently solves high temperature, low pressure, a High water cut gas phase demercuration difficult problem, especially glycol recycling tower top fixed gas high temperature, low pressure, a High water cut demercuration difficult problem, there is stronger adaptability, operating cost is low, reliability is high feature, greatly reduce gas field production cost, save energy consumption, for domestic built ethylene glycol regenerating device gas phase demercuration provides technical support, for the hydrocarbon removal process of low temperature processing dehydration is from now on laid a good foundation in the application of mercurous gas field.
Accompanying drawing explanation
accompanying drawing 1 is the process structure schematic diagram of the utility model most preferred embodiment.
coding in accompanying drawing is respectively: 1 is thermal energy recoverer, and 2 is air cooler, and 3 is a point flow container, 4 is device for drying and filtering, and 5 is adsorption tower, and 6 is unstripped gas pipeline, 7 is air cooler feeding line, and 8 is a point flow container feeding line, and 9 is sewage discharge pipeline, 10 is mercurous gas pipeline, and 11 is dry mercurous gas pipeline, and 12 is mercurous fixed gas pipeline, 13 is demercuration fixed gas pipeline, and 14 is adsorption tower for subsequent use, and 15 is adsorption tower feeding line for subsequent use, 16 is adsorption tower discharging pipeline for subsequent use, and 17 is valve, and 18 is blower fan.
Detailed description of the invention
the utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, based on the gas phase mercury removal device of chemisorbed, thermal energy recoverer 1, air cooler 2, point flow container 3, device for drying and filtering 4, adsorption tower 5 should be comprised, the thermal medium inlet of thermal energy recoverer 1 is installed with unstripped gas pipeline 6, air cooler feeding line 7 is installed with between the thermal medium outlet of thermal energy recoverer 1 and the import of air cooler 2, a point flow container feeding line 8 is installed with between the charging aperture of air cooler 2 and point flow container 3, the bottom of flow container 3 is divided to be installed with sewage discharge pipeline 9, divide between the top of flow container 3 and the charging aperture of device for drying and filtering 4 and be installed with mercurous gas pipeline 10, dry mercurous gas pipeline 11 is installed with between the discharging opening of device for drying and filtering 4 and the cold medium entrance of thermal energy recoverer 1, mercurous fixed gas pipeline 12 is installed with between the cold media outlet of thermal energy recoverer 1 and the charging aperture of adsorption tower 5, the top of adsorption tower 5 is installed with demercuration fixed gas pipeline 13.
gas phase demercuration should be carried out in the steps below: unstripped gas first carries out being cooled to 35 degrees Celsius to 55 degrees Celsius via entering air cooler 2 after thermal energy recoverer 1 based on the gas phase mercury removal device of chemisorbed, then cooled unstripped gas enters point flow container and carries out gas-liquid separation and obtain containing Mercury sewage with containing mercury vapour respectively, mercurous pneumatic transmission is carried out dry filter in mercurous gas pipeline 10 to device for drying and filtering 4, delivering to when mercurous atmospheric pressure is greater than 30 kPas after thermal energy recoverer 1 is heated to 45 degrees Celsius to 60 degrees Celsius containing mercury vapour after dry filter obtains mercurous fixed gas, last just mercurous fixed gas is sent in adsorption tower 5, adsorbent in mercurous fixed gas and adsorption tower 5 reacts and mercury removal is obtained demercuration fixed gas.The utility model still adopts chemiadsorption demercuration, and in conjunction with the condensing characteristic of mercury, take first to cool, being separated, then heat, the combined gas hydrargyrum-removing technology of last chemisorbed, guarantee to reach discharge standard containing mercury vapour, be less than 12 microgram every cube finally by by the mercury content in demercuration fixed gas out in adsorption tower 5.The utility model method is applicable to process the next fixed gas of glycol recycling tower top, specific practice is: glycol recycling tower top carrys out high temperature, low pressure, High water cut fixed gas enter into point flow container 3 after air cooling, the mercuryvapour of about 80% is condensed, isolated containing the mercury vapour free drop of dry removing after filtration, then adsorption tower 5 is entered into, by mercury removal after reacting with the adsorbent in adsorption tower 5 after promoting temperature; The mercury vapour that contains after dry filter enters adsorption tower through being heated to 45 degrees Celsius again to 60 degrees Celsius, make to separate out containing mercury vapour evaporated condensation water, guarantee adsorption effect and the service life of adsorption tower 5, adsorption tower bed is flowed through from bottom to top and with bed adsorption agent generation chemical reaction by mercury removal containing mercury vapour, demercuration fixed gas goes to burn or discharge, and what device was discharged enter into station field sewage storage tank containing Mercury sewage focuses on.
in the process, because the temperature of unstripped gas is usually higher, belong to High Temperature Gas, and the gas of being come by the mercurous gas pipeline of drying 11 is lower through the process typical temperature of air cooler 2, lower than the temperature of unstripped gas, the unstripped gas therefore entering thermal energy recoverer 1 can carry out heat exchange with the mercury vapour that contains entering thermal energy recoverer 1, like this, can heat utilization rate be improved, reach energy-saving and cost-reducing object.
according to actual needs, the above-mentioned gas phase mercury removal device based on chemisorbed can be made further optimization and/or improvements:
as shown in Figure 1, adsorption tower 14 for subsequent use should be also comprised based on the gas phase mercury removal device of chemisorbed, be installed with adsorption tower feeding line 15 for subsequent use between mercurous fixed gas pipeline 12 and adsorption tower for subsequent use 14, between adsorption tower 14 for subsequent use and demercuration fixed gas pipeline 13, be installed with adsorption tower discharging pipeline 16 for subsequent use.When the tolerance of unstripped gas is larger, adsorption tower 5 can be opened and adsorption tower for subsequent use 14 carries out work, needs of finishing the work simultaneously, also can when an adsorption tower carries out overhauling or changing adsorbent, another carries out work, can ensure like this to produce continuously, increases work efficiency.
according to actual needs, mercurous fixed gas pipeline 12 between adsorption tower feeding line 15 for subsequent use and adsorption tower 5 is provided with valve 17, demercuration fixed gas pipeline 13 between adsorption tower 5 and adsorption tower discharging pipeline 16 for subsequent use is provided with valve 17, adsorption tower feeding line 15 for subsequent use and adsorption tower discharging pipeline 16 for subsequent use are respectively arranged with valve 17.When the tolerance of unstripped gas is larger, two adsorption towers can be opened simultaneously and carry out work, to finish the work needs, when needs are to when wherein an adsorption tower overhauls or changes adsorbent, control to make that adsorption tower stops production by valve 17, another carries out work, can ensure like this to produce continuously, increase work efficiency.
as shown in Figure 1, the mercurous gas pipeline 11 of drying is installed with blower fan 18.When the pressure of unstripped gas is less than or equal to 30 kPas, blower fan 18 is set between device for drying and filtering 4 and thermal energy recoverer 1, the pressure containing mercury vapour can be improved, when the pressure of unstripped gas is less than or equal to 30 kPas, mercurous atmospheric pressure is carried to more than 30 kPas.
according to actual needs, silica gel or molecular sieve or activated alumina is filled with in device for drying and filtering 4.
according to actual needs, the exit of adsorption tower 5 is provided with sample tap, adsorption tower 5 is provided with differential pressure measuring device, point flow container 3 is provided with differential pressure measuring device, liquid level detection device and fluid level control device.Regularly adsorption tower 1 import and export bicycle pump content is detected in production process, adsorbent regularly replaces, divide on flow container 3 and be provided with differential pressure measuring device, liquid level detection device, fluid level control device, can judge that the coalescent silk screen of filter core of point flow container 3 is the need of cleaning, grasps separator ruuning situation according to differential pressure conditions; Adsorption tower 5 is provided with differential pressure measuring device, and along with the prolongation of adsorption time, pressure drop progressively increases, and can judge the absorption situation of adsorbent according to pressure drop, all signals upload control room Centralized Monitoring, implement device unmanned.
according to actual needs, thermal energy recoverer 1, air cooler 2, point flow container 3, device for drying and filtering 4, adsorption tower 5, adsorption tower for subsequent use 14 and a blower fan 15 are all arranged on skid base.Thermal energy recoverer 1, air cooler 2, point flow container 3, device for drying and filtering 4, adsorption tower 5, adsorption tower for subsequent use 14 and a blower fan 18 are all arranged on skid base, realize skid integration, carrying and installation is removed convenient, both after having needed simply to connect head after roping to scene, just adjustable uses, and be equipped with reliable automatic instrument(s), all signals upload control room Centralized Monitoring, on-the-spot unmanned
the utility model efficiently solves high temperature, low pressure, a High water cut gas phase demercuration difficult problem, especially glycol recycling tower top fixed gas high temperature, low pressure, a High water cut demercuration difficult problem, there is stronger adaptability, operating cost is low, the feature that reliability is high, instead of and take the raising unstripped gas demercuration degree of depth to contain to reduce glycol system mercury, greatly reduce gas field production cost, and to the change of gas phase mercury content, there is stronger adaptability, and make full use of the heat of present treatment technical process, save energy consumption, unstripped gas high temperature is utilized to heat containing the carrying out of mercury vapour afterwards refrigerated separation drying, reduce air cooler 2 load, improve and enter adsorption tower temperature containing mercury vapour, guarantee adsorption effect, for domestic built ethylene glycol regenerating device gas phase demercuration provides technical support, for the hydrocarbon removal process of low temperature processing dehydration is from now on laid a good foundation in the application of mercurous gas field.
the gas phase demercuration that mercurous tail gas, mercurous condensate and sewage adopt the occasions such as stripping gas treatment process is discharged in tail gas, thermal power plant after the utility model can also be used for the emission of mercurous Gas Exploitation TEG Dehydration Processing, the burning of mercurous petroleum and natural gas, and for low pressure, high temperature, High water cut gas phase realizes low cost demercuration provides solution.
above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1., based on a gas phase mercury removal device for chemisorbed, it is characterized in that comprising thermal energy recoverer, air cooler, point flow container, device for drying and filtering, adsorption tower, the thermal medium inlet of thermal energy recoverer is installed with unstripped gas pipeline, air cooler feeding line is installed with between the thermal medium outlet of thermal energy recoverer and the import of air cooler, a point flow container feeding line is installed with between the charging aperture of air cooler and point flow container, the bottom of flow container is divided to be installed with sewage discharge pipeline, divide between the top of flow container and the charging aperture of device for drying and filtering and be installed with mercurous gas pipeline, dry mercurous gas pipeline is installed with between the discharging opening of device for drying and filtering and the cold medium entrance of thermal energy recoverer, mercurous fixed gas pipeline is installed with between the cold media outlet of thermal energy recoverer and the charging aperture of adsorption tower, the top of adsorption tower is installed with demercuration fixed gas pipeline.
2. the gas phase mercury removal device based on chemisorbed according to claim 1, characterized by further comprising adsorption tower for subsequent use, be installed with adsorption tower feeding line for subsequent use between mercurous fixed gas pipeline and adsorption tower for subsequent use, between adsorption tower for subsequent use and demercuration fixed gas pipeline, be installed with adsorption tower discharging pipeline for subsequent use.
3. the gas phase mercury removal device based on chemisorbed according to claim 2, it is characterized in that the mercurous fixed gas pipeline between adsorption tower feeding line for subsequent use and adsorption tower is provided with valve, demercuration fixed gas pipeline between adsorption tower and adsorption tower discharging pipeline for subsequent use is provided with valve, adsorption tower feeding line for subsequent use and adsorption tower discharging pipeline for subsequent use are respectively arranged with valve.
4. the gas phase mercury removal device based on chemisorbed according to claim 1 or 2 or 3, is characterized in that being installed with blower fan on the mercurous gas pipeline of drying.
5. the gas phase mercury removal device based on chemisorbed according to claim 1 or 2 or 3, is characterized in that being filled with in device for drying and filtering silica gel or molecular sieve or activated alumina.
6. the gas phase mercury removal device based on chemisorbed according to claim 4, is characterized in that being filled with in device for drying and filtering silica gel or molecular sieve or activated alumina.
7. the gas phase mercury removal device based on chemisorbed according to claim 1 or 2 or 3 or 6, is characterized in that the exit of adsorption tower is provided with sample tap; Or/and, adsorption tower is provided with differential pressure measuring device; Or/and, point flow container is provided with liquid level detection device and fluid level control device.
8. the gas phase mercury removal device based on chemisorbed according to claim 4, is characterized in that the exit of adsorption tower is provided with sample tap; Or/and, adsorption tower is provided with differential pressure measuring device; Or/and, point flow container is provided with liquid level detection device and fluid level control device.
9. the gas phase mercury removal device based on chemisorbed according to claim 5, is characterized in that the exit of adsorption tower is provided with sample tap; Or/and, adsorption tower is provided with differential pressure measuring device; Or/and, point flow container is provided with liquid level detection device and fluid level control device.
10. the gas phase mercury removal device based on chemisorbed according to Claims 2 or 3, characterized by further comprising skid base, thermal energy recoverer, air cooler, point flow container, device for drying and filtering, adsorption tower, adsorption tower for subsequent use and a blower fan are all arranged on skid base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520938325.4U CN205127735U (en) | 2015-11-23 | 2015-11-23 | Gaseous phase demercuration device based on chemisorption |
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| CN201520938325.4U CN205127735U (en) | 2015-11-23 | 2015-11-23 | Gaseous phase demercuration device based on chemisorption |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289270A (en) * | 2015-11-23 | 2016-02-03 | 新疆石油工程设计有限公司 | Chemical adsorption-based gas phase mercury removal method and special-purpose apparatus |
| CN109486541A (en) * | 2018-11-30 | 2019-03-19 | 东南大学 | Removing means, method and the application of mercury in a kind of gas dehydration alcohols solvent |
| CN110218589A (en) * | 2019-07-12 | 2019-09-10 | 陕西聚能新创煤化科技有限公司 | A kind of high mercurous coal-cleaning utilization and the device and method for recycling mercury metal |
-
2015
- 2015-11-23 CN CN201520938325.4U patent/CN205127735U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289270A (en) * | 2015-11-23 | 2016-02-03 | 新疆石油工程设计有限公司 | Chemical adsorption-based gas phase mercury removal method and special-purpose apparatus |
| CN109486541A (en) * | 2018-11-30 | 2019-03-19 | 东南大学 | Removing means, method and the application of mercury in a kind of gas dehydration alcohols solvent |
| CN110218589A (en) * | 2019-07-12 | 2019-09-10 | 陕西聚能新创煤化科技有限公司 | A kind of high mercurous coal-cleaning utilization and the device and method for recycling mercury metal |
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Address after: Room 302, block C, 115 Youyi Road, Karamay District, Xinjiang Uygur Autonomous Region 834000 Patentee after: CNPC (XINJIANG) PETROLEUM ENGINEERING Co.,Ltd. Address before: Room 302, block C, 115 Youyi Road, Karamay, Xinjiang Uygur Autonomous Region 834000 Patentee before: XINJIANG PETROLEUM ENGINEERING DESIGN Co.,Ltd. |
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Effective date of registration: 20210223 Address after: 100120 No.6 liupukang street, Xicheng District, Beijing Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC (XINJIANG) PETROLEUM ENGINEERING Co.,Ltd. Address before: Room 302, block C, 115 Youyi Road, Karamay District, Xinjiang Uygur Autonomous Region 834000 Patentee before: CNPC (XINJIANG) PETROLEUM ENGINEERING Co.,Ltd. |