CN105001930A - Methane purification deoxidization system and methane purification deoxidization method - Google Patents
Methane purification deoxidization system and methane purification deoxidization method Download PDFInfo
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- CN105001930A CN105001930A CN201510493838.3A CN201510493838A CN105001930A CN 105001930 A CN105001930 A CN 105001930A CN 201510493838 A CN201510493838 A CN 201510493838A CN 105001930 A CN105001930 A CN 105001930A
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- methane purification
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- deaerating type
- deoxidization
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Abstract
The invention relates to a methane purification deoxidization system and a methane purification deoxidization method. The methane purification deoxidization system comprises a deoxidization reactor, wherein the deoxidization reactor comprises an outer cylinder, an inner cylinder arranged inside the outer cylinder, a heating device mounted inside the inner cylinder, an air inlet formed in the upper part of the inner cylinder and used for allowing methane and hydrogen to be introduced into, a through hole formed in the lower part and/or the bottom part of the inner cylinder and used for allowing air to pass through, an air outlet formed in the outer cylinder and used for allowing gas subjected to deoxidization to be exhausted, an accommodation space formed between the inner cylinder and the outer cylinder and used for accommodating a granular or cylindrical palladium catalyst, and a discharge opening formed in the lower part of the outer cylinder and used for discharging. According to the invention, an external heating structure is eliminated, energy is saved, the contact area between hydrogen and the catalyst and the contact area between oxygen and the catalyst are enlarged, the deoxidization efficiency is high, the replacement of the catalyst is convenient, the control is precise, and the oxygen removal depth can meet the using requirements of CNG and LNG; the methane purification deoxidization system can be manufactured into an integrated skid-mounted device, the mounting and operation are convenient and fast, and the automation degree is high.
Description
Technical field
the present invention relates to a kind of methane purification deaerating type of cycles and methane purification deoxidation method.
Background technology
biogas is as a kind of biomass energy, and in today of energy scarcity, tool is of great significance and wide development potentiality.Biogas can also be purified further as compressed natural gas (CNG) and natural gas liquids (LNG).The composition of biogas is relevant with operating method with the raw material of anaerobically fermenting, mainly consists of methane (CH
4
, 40% ~ 75%), carbonic acid gas (CO
2
, 15% ~ 60%), also have a small amount of water, hydrogen sulfide, organosulfur, siloxanes, halohydrocarbon, ammonia, oxygen, carbon monoxide and nitrogen etc.If the biogas that garbage loading embeading place produces, then composition is more complicated, and may containing more oxygen (0 ~ 5%).
methane purification is that compressed natural gas uses, and according to the regulation of GB18047-2000 " compressed natural gas used as vehicle fuel ", the calorific value of biogas and component must meet certain requirement, and wherein, oxygen content requires to be less than 0.5%.The requirement of natural gas liquids to oxygen content is higher, if oxygen content is greater than above standard, can produce explosion hazard, serious harm lives and properties.So in methane purification process, oxygen content being reduced to below permissible value is necessary unit.
but in actual use procedure, most methane purifications and purification process all pay close attention to dewater, desulfurization and carbon dioxide removal, seldom pay close attention to removing of oxygen.As the methane purification technology that patent CN201210009074 describes, through filtration, drying, desulfurization and absorption, make biogas concentration reach 98%, there is no deoxygenation unit.A kind of methane purification purification process that patent CN201410350212 describes, by washing, dry mode, removes carbonic acid gas, hydrogen sulfide and water wherein, does not have deoxygenation unit equally.In fact, by this technique, oxygen is not removed, and oxygen content can go up not down.Patent of invention CN201310166484 describes a kind of methane purification system and technique, by pretreatment system, then by core processing unit-film separating system, and purifying biogas, same, in pretreatment unit, there is no deoxygenation unit.
disclose a kind of method of Recovery Purifying methane from refuse embedded gas, its deoxygenation step is: by the rough purification gas obtained from pressure swing adsorption system, heater via is preheated to 30 ~ 80 DEG C, palladium catalyst deoxidation reactor is entered from the inlet pipe of deoxidation reactor after mixing with outer confession hydrogen, under the effect of palladium catalyst in the reactor, the oxygen contained in rough purification gas and hydrogen reaction generate water, to remove the oxygen in rough purification gas, obtain the methane gas containing moisture.Described palladium catalyst deoxidation reactor comprises one with the urceolus of inner chamber, the two ends of urceolus are connected to upper and lower blind flange by bolt and nut, described blind flange is connected with inlet pipe, escape pipe respectively, inner core rod is arranged with in the inner chamber of described urceolus, form microchannel between described inner core rod and urceolus, the internal surface of described urceolus and the outer surface of inner core rod have palladium catalyst coating.Therefore, in this device, the contact area of catalyzer is less, makes oxygen removal efficiency lower, and changes inconvenience after catalyst failure.
Summary of the invention
technical problem to be solved by this invention is to provide the high methane purification deaerating type of cycles of a kind of oxygen removal efficiency and methane purification deoxidation method.
for solving above technical problem, the present invention takes following technical scheme:
a kind of methane purification deaerating type of cycles, comprise for remove oxygen in biogas except oxygen reactor, the described oxygen reactor that removes comprises the urceolus with inner volume, there is inner volume and be arranged on the inner core in described urceolus, be arranged on the heating unit in described inner core, be formed in the top of described inner core and supply the inlet mouth that described biogas and hydrogen pass into, be formed in the bottom of described inner core and/or bottom and the through hole that passes through of supplied gas, be formed in the air outlet of discharging on described urceolus and for the gas removed after oxygen, be formed in the accommodation space for loaded particles shape or columniform palladium catalyst between described inner core and described urceolus, be formed in the discharge opening of bottom for discharging of described urceolus.
particularly, described methane purification deaerating type of cycles also comprise to be connected with described inlet mouth for described except pass in oxygen reactor described biogas the first inlet pipe, to be connected with described inlet mouth or the first described inlet pipe for described remove pass into described hydrogen in oxygen reactor the second inlet pipe, be arranged in the second described inlet pipe for regulating the variable valve group of the hydrogen flowing quantity passed into, being arranged in the second described inlet pipe for measuring the under meter of the hydrogen flowing quantity passed into.
more specifically, described variable valve group is between described under meter and the inlet mouth of the second described inlet pipe.
more specifically, described variable valve group comprises the first manual valve, self-acting valve, the second manual valve that are successively set in the second described inlet pipe, and described methane purification deaerating type of cycles also comprises the bypass pipe be arranged in the second described inlet pipe, the by-pass valve be arranged on described bypass pipe.
particularly, described methane purification deaerating type of cycles also comprises the water cooler with import, outlet, entrance of cooling water, cooling water outlet and condensation-water drain, the exit being arranged on described water cooler, for monitoring the on-line monitoring instrument of remnant oxygen content, is arranged on the condensed water elimination valve at the condensation-water drain place of described water cooler; The import of described water cooler is connected with the described air outlet except oxygen reactor.
more specifically, described water cooler is shell and tube cooler.
particularly, described heating unit comprises at least one electrically heated rod.
particularly, described methane purification deaerating type of cycles also comprises that control point is arranged on the first temperature controller of the inside of described inner core, control point is arranged on the second temperature controller between described urceolus and described inner core.
a kind of methane purification deoxidation method, passes into described methane purification deaerating type of cycles by biogas and hydrogen, removes the oxygen in described biogas.
particularly, the temperature except oxygen reactor described in control is 70 DEG C ~ 150 DEG C.
due to the enforcement of above technical scheme, the present invention compared with prior art tool has the following advantages:
heating unit except oxygen reactor of the present invention is arranged on inner core, save external heat structure, save the energy, in addition, palladium catalyst of the present invention is seated in accommodation space, the contact area of hydrogen and oxygen and catalyzer is increased, oxygen removal efficiency is improved, further, catalyst change of the present invention is convenient.The present invention controls accurately, and oxygen removes the service requirements that the degree of depth can meet CNG and LNG, and the present invention can make integrated skid-mounted device, and install and simple operation, level of automation is high.
Accompanying drawing explanation
accompanying drawing 1 is system construction drawing of the present invention;
accompanying drawing 2 is the structural representation except oxygen reactor;
wherein: 1, except oxygen reactor; 2, palladium catalyst; 3, the first inlet pipe; 4, the second inlet pipe; 5, variable valve group; 6, under meter; 7, water cooler; 8, on-line monitoring instrument; 9, condensed water elimination valve; 11, urceolus; 12, inner core; 13, heating unit; 14, inlet mouth; 15, air outlet; 16, accommodation space; 17, discharge opening; 18, the first temperature controller; 19, the second temperature controller; 51, the first manual valve; 52, self-acting valve; 53, the second manual valve; 54, bypass pipe; 55, by-pass valve; 71, import; 72, export; 73, entrance of cooling water; 74, cooling water outlet; 75, condensation-water drain.
Embodiment
below in conjunction with specific embodiment, the present invention will be further described in detail, but the invention is not restricted to following examples.
as shown in figure 1 and 2, a kind of methane purification deaerating type of cycles, comprise for remove oxygen in biogas except oxygen reactor 1, except oxygen reactor 1 comprises the urceolus 11 with inner volume, there is inner volume and be arranged on the inner core 12 in urceolus 11, be arranged on the heating unit 13 in inner core 12, be formed in the top of inner core 12 and supply the inlet mouth 14 that biogas and hydrogen pass into, be formed in the bottom of inner core 12 and/or bottom and the through hole that passes through of supplied gas, be formed in the air outlet 15 of discharging on urceolus 11 and for the gas removed after oxygen, be formed in the accommodation space 16 for loaded particles shape or columniform palladium catalyst 2 between inner core 12 and urceolus 11, be formed in the discharge opening 17 of bottom for discharging of urceolus 11.
heating unit 13 comprises at least one electrically heated rod, the temperature that methane purification deaerating type of cycles also comprises that control point is arranged on the first temperature controller 18 of the inside of inner core 12, control point is arranged on the second temperature controller 19, first temperature controller 18 between urceolus 11 and inner core 12 and the second temperature controller 19 can control except oxygen reactor 1 is 70 DEG C ~ 150 DEG C.
methane purification deaerating type of cycles also comprise to be connected with inlet mouth 14 for pass in oxygen reactor 1 biogas the first inlet pipe 3, to be connected with inlet mouth 14 or the first inlet pipe 3 for remove pass into hydrogen in oxygen reactor 1 the second inlet pipe 4, be arranged in the second inlet pipe 4 for regulating the variable valve group 5 of the hydrogen flowing quantity passed into, being arranged in the second inlet pipe 4 for measuring the under meter 6 of the hydrogen flowing quantity passed into.
variable valve group 5 is between under meter 6 and the inlet mouth 14 of the second inlet pipe 4.Variable valve group 5 comprises the first manual valve 51 be successively set in the second inlet pipe 4, self-acting valve 52, second manual valve 53, and methane purification deaerating type of cycles also comprises the bypass pipe 54 be arranged in the second inlet pipe 4, the by-pass valve 55 be arranged on bypass pipe 54.Therefore, hydrogen can be passed through self-acting valve 52 adjust flux; Also after can closing the first manual valve 51 and the second manual valve 53, manually reconcile the flow that by-pass valve 55 regulates hydrogen, thus realize manually automatically regulating integration.
methane purification deaerating type of cycles also comprises the water cooler 7 with import 71, outlet 72, entrance of cooling water 73, cooling water outlet 74 and condensation-water drain 75, outlet 72 place being arranged on water cooler 7, for monitoring the on-line monitoring instrument 8 of remnant oxygen content, is arranged on the condensed water elimination valve 9 at condensation-water drain 75 place of water cooler 7; The import 71 of water cooler 7 is connected with the air outlet 15 except oxygen reactor 1, and water cooler 7 is shell and tube cooler 7.On-line monitoring instrument 8 can export residual oxygen in the biogas at 72 places by Real-Time Monitoring water cooler 7, automatically calculated by PID or PLC, then automatic or manual regulates the aperture of variable valve group 5, adjusts the hydrogen flowing quantity passed into, thus controls the remnant oxygen content in biogas.
this methane purification deaerating type of cycles is integrated stand-alone system, can be used as the correct position that a separate unit is placed on methane purification technology, does not affect the normal operation of whole system.
the biogas (generally need dewater and desulfurization) come from upper level pass into methane purification deaerating type of cycles except in oxygen reactor 1, palladium catalyst 2 is filled with except in oxygen reactor 1, simultaneously, hydrogen is through variable valve group 5 adjust flux, and by after under meter 6 metered flow, also pass into methane purification deaerating type of cycles except in oxygen reactor 1, except the heating unit 13 in oxygen reactor 1 will except oxygen reactor 1(is particularly by beds) heating temperatures to 70 ~ 150 DEG C (being regulated as required by the first temperature controller 18 and the second temperature controller 19), oxygen in biogas and the hydrogen passed into start water generation reaction under the effect of palladium catalyst 2, thus the oxygen removed in biogas, water vapor flows out along with biogas, then cooled by water cooler 7, water vapor in biogas is cooled to water of condensation, then discharged by condensed water elimination valve 9 automatic or manual, biogas can enter next stage treatment system.
above to invention has been detailed description; its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; the equivalence change that all spirit according to the present invention are done or modification, all should be encompassed in protection scope of the present invention.
Claims (10)
1. a methane purification deaerating type of cycles, comprise for remove oxygen in biogas except oxygen reactor (1), it is characterized in that: the described oxygen reactor (1) that removes comprises the urceolus (11) with inner volume, there is inner volume and be arranged on the inner core (12) in described urceolus (11), be arranged on the heating unit (13) in described inner core (12), be formed in the top of described inner core (12) and supply the inlet mouth (14) that described biogas and hydrogen pass into, be formed in the bottom of described inner core (12) and/or bottom and the through hole that passes through of supplied gas, be formed in the air outlet (15) that described urceolus (11) above and for the gas removed after oxygen is discharged, be formed in the accommodation space (16) for loaded particles shape or columniform palladium catalyst (2) between described inner core (12) and described urceolus (11), the bottom being formed in described urceolus (11) is used for the discharge opening (17) of discharging.
2. methane purification deaerating type of cycles according to claim 1, it is characterized in that: described methane purification deaerating type of cycles also comprise to be connected with described inlet mouth (14) for described except the first inlet pipe (3) passing into described biogas in oxygen reactor (1), be connected for removing to described the second inlet pipe (4) passing into described hydrogen in oxygen reactor (1) with described inlet mouth (14) or described the first inlet pipe (3), be arranged in described the second inlet pipe (4) for regulating the variable valve group (5) of the hydrogen flowing quantity passed into, be arranged in described the second inlet pipe (4) for measuring the under meter (6) of the hydrogen flowing quantity passed into.
3. methane purification deaerating type of cycles according to claim 2, is characterized in that: described variable valve group (5) is positioned between the inlet mouth (14) of described under meter (6) and described the second inlet pipe (4).
4. methane purification deaerating type of cycles according to claim 2, it is characterized in that: described variable valve group (5) comprises the first manual valve (51), self-acting valve (52), the second manual valve (53) that are successively set in described the second inlet pipe (4), described methane purification deaerating type of cycles also comprises the bypass pipe (54) be arranged in described the second inlet pipe (4), the by-pass valve (55) be arranged on described bypass pipe (54).
5. methane purification deaerating type of cycles according to claim 1, it is characterized in that: described methane purification deaerating type of cycles also comprises the water cooler (7) with import (71), outlet (72), entrance of cooling water (73), cooling water outlet (74) and condensation-water drain (75), outlet (72) place being arranged on described water cooler (7), for monitoring the on-line monitoring instrument (8) of remnant oxygen content, is arranged on the condensed water elimination valve (9) at condensation-water drain (75) place of described water cooler (7); The import (71) of described water cooler (7) is connected with the described air outlet (15) except oxygen reactor (1).
6. methane purification deaerating type of cycles according to claim 5, is characterized in that: described water cooler (7) is shell and tube cooler (7).
7. methane purification deaerating type of cycles according to claim 1, is characterized in that: described heating unit (13) comprises at least one electrically heated rod.
8. methane purification deaerating type of cycles according to claim 1, is characterized in that: described methane purification deaerating type of cycles also comprises that control point is arranged on first temperature controller (18) of the inside of described inner core (12), control point is arranged on the second temperature controller (19) between described urceolus (11) and described inner core (12).
9. a methane purification deoxidation method, is characterized in that: biogas and hydrogen are passed into the methane purification deaerating type of cycles according to any one of claim 1 to 8, remove the oxygen in described biogas.
10. methane purification deoxidation method according to claim 9, is characterized in that: the temperature except oxygen reactor (1) described in control is 70 DEG C ~ 150 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493838.3A CN105001930B (en) | 2015-08-12 | 2015-08-12 | Methane purification deoxidization system and methane purification deoxidization method |
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|---|---|---|---|
| CN201510493838.3A CN105001930B (en) | 2015-08-12 | 2015-08-12 | Methane purification deoxidization system and methane purification deoxidization method |
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| CN105001930A true CN105001930A (en) | 2015-10-28 |
| CN105001930B CN105001930B (en) | 2017-05-10 |
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|---|---|---|---|
| CN201510493838.3A Active CN105001930B (en) | 2015-08-12 | 2015-08-12 | Methane purification deoxidization system and methane purification deoxidization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008140A (en) * | 2017-05-25 | 2017-08-04 | 华能国际电力股份有限公司 | A kind of closed cycle deaerating plant |
| CN114832510A (en) * | 2022-06-08 | 2022-08-02 | 阳光氢能科技有限公司 | Gas-liquid separator and water electrolysis hydrogen production system |
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| US3098712A (en) * | 1959-03-31 | 1963-07-23 | Engelhard Ind Inc | Method for selective removal of oxygen from gaseous mixtures of oxygen and nitric oxide |
| CN102321494A (en) * | 2011-05-24 | 2012-01-18 | 北京惟泰安全设备有限公司 | Coal bed gas separating system and process |
| WO2014154250A1 (en) * | 2013-03-26 | 2014-10-02 | Outotec (Finland) Oy | Method and plant for the production of methane |
| CN204981796U (en) * | 2015-08-12 | 2016-01-20 | 苏州苏净保护气氛有限公司 | Marsh gas purification deoxidization system |
-
2015
- 2015-08-12 CN CN201510493838.3A patent/CN105001930B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3098712A (en) * | 1959-03-31 | 1963-07-23 | Engelhard Ind Inc | Method for selective removal of oxygen from gaseous mixtures of oxygen and nitric oxide |
| CN102321494A (en) * | 2011-05-24 | 2012-01-18 | 北京惟泰安全设备有限公司 | Coal bed gas separating system and process |
| WO2014154250A1 (en) * | 2013-03-26 | 2014-10-02 | Outotec (Finland) Oy | Method and plant for the production of methane |
| CN204981796U (en) * | 2015-08-12 | 2016-01-20 | 苏州苏净保护气氛有限公司 | Marsh gas purification deoxidization system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008140A (en) * | 2017-05-25 | 2017-08-04 | 华能国际电力股份有限公司 | A kind of closed cycle deaerating plant |
| CN107008140B (en) * | 2017-05-25 | 2023-09-01 | 华能国际电力股份有限公司 | Closed circulation deoxidization device |
| CN114832510A (en) * | 2022-06-08 | 2022-08-02 | 阳光氢能科技有限公司 | Gas-liquid separator and water electrolysis hydrogen production system |
| CN114832510B (en) * | 2022-06-08 | 2024-05-14 | 阳光氢能科技有限公司 | Gas-liquid separator and electrolytic water hydrogen production system |
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| CN105001930B (en) | 2017-05-10 |
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