CN104803353A - Method using hydrogen and carbon monoxide separation cold box tail gas as converter fuel - Google Patents
Method using hydrogen and carbon monoxide separation cold box tail gas as converter fuel Download PDFInfo
- Publication number
- CN104803353A CN104803353A CN201410038124.9A CN201410038124A CN104803353A CN 104803353 A CN104803353 A CN 104803353A CN 201410038124 A CN201410038124 A CN 201410038124A CN 104803353 A CN104803353 A CN 104803353A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- converter
- ice chest
- pressure
- burning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007789 gas Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 22
- 229910002091 carbon monoxide Inorganic materials 0.000 title claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000000446 fuel Substances 0.000 title claims abstract description 18
- 239000001257 hydrogen Substances 0.000 title claims abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000000926 separation method Methods 0.000 title abstract description 3
- 238000004064 recycling Methods 0.000 claims description 22
- 238000000629 steam reforming Methods 0.000 claims description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 8
- 230000001276 controlling effect Effects 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to a method using hydrogen and carbon monoxide separation cold box tail gas as a converter fuel. Partial cold box tail gas is connected to a torch through a discharge pipeline, and combusts, and the residual cold ox tail gas is connected to a converter through a tail gas reuse pipeline, and is used as a converter fuel; and the discharge pipeline is provided with a regulating valve for regulating the flow amount and the pressure of the cold box tail gas entering the torch and combusting, and the tail gas reuse pipeline is provided with a regulating valve for regulating the flow amount and the pressure of the cold box tail gas entering the converter and combusting. The method concretely comprises the following steps: starting the converter to make the converter normally run; regulating the regulating valve on the discharge pipeline to regulate the pressure of the cold box tail gas entering the torch and combusting to 0.6-1bar; regulating the regulating valve on the tail gas reuse pipeline to regulate the pressure of the cold box tail gas entering the converter and combusting to 0.4-0.8bar; and controlling the flow amount of the cold box tail gas entering the converter and combusting to 30-120nm<3>/h. Compared with the prior art, the method has the advantages of cost saving, large economy value, environmental protection and cleanness.
Description
Technical field
The present invention relates to the method for a kind of tail gas recycling, especially relate to a kind of hydrogen that utilizes and be separated the method that ice chest tail gas does converter fuel with carbon monoxide.
Background technology
The process of industrial tail gas is generally carry out adsorbing and processing according to its physics, chemical property, needs to a great extent to drop into manpower and materials, and waste liquid after process and the recovery of waste residue.As sulfuric acid industry tail gas need ammoniacal liquor to adsorb, nitric acid industry tail gas needs to adsorb etc. with sodium hydroxide.Although this processing mode can reduce the pollution of tail gas to environment, lower to the useful matter utilization ratio in tail gas.
The mixture (Hydrogen+CO) of HyCO and hydrogen and carbon monoxide.The HyCO of narrow sense is the chemical process of simultaneously producing hydrogen and carbon monoxide.Because carbon monoxide is all produced with hydrogen under normal circumstances simultaneously, therefore in gas industry, with HyCO, people represent that main products is hydrogen and/or carbon monoxide and/or hydrogen, the chemical production device of carbon mono oxide mixture (synthetic gas, or Syngas) or production technique.
The production technique of HyCO comprises generation synthetic gas (Generation) and two stages of synthetic gas isolated or purified (Separation or Purification).Purification phase main method comprises sour gas and removes (AGR, Acid Gas Removal), membrane sepn (Membrane), ice chest (Coldbox), pressure-variable adsorption (PSA).
HyCO ice chest technique is specially: synthetic gas is through being stripped of H
2o, CO
2, H
2after the impurity such as S, be cooled to about-180 DEG C through cryogenic technology and hydrogen is separated with carbon monoxide, thus obtain pure carbon monoxide product.
HyCO ice chest is synthetic gas isolation of purified CO and H
2, mainly raw material is contained 54%CO and 45%H
2and the N of trace
2, CH
4, the gas such as Ar boiling point different from CO and H
2the purifying plant separated, the tail gas main component of ice chest is the N of trace
2, CO, H
2, Ar and other components rare gas.At present to the treatment process of ice chest tail gas for putting to torch burning.This mode causes the waste of tail gas, lacks the recycling to tail gas economic worth.
Summary of the invention
Object of the present invention is exactly provide to overcome defect that above-mentioned prior art exists that a kind of cost-saving, economic worth is large, the hydrogen that utilizes of environment-protecting clean is separated with carbon monoxide the method that ice chest tail gas does converter fuel.
Object of the present invention can be achieved through the following technical solutions:
Utilize hydrogen to be separated the method that ice chest tail gas does converter fuel with carbon monoxide, a part of ice chest tail gas is connected to torch burning by discharge tube, residue ice chest tail gas is connected to converter, as converter fuel by tail gas recycling pipeline; Described discharge tube is provided with to regulate and enters the ice chest exhaust flow of torch burning and the variable valve of pressure, and described tail gas recycling pipeline is provided with to regulate and enters the ice chest exhaust flow of converter burning and the variable valve of pressure.
The method specifically comprises the following steps:
(1) open converter, make its normal production run;
(2) regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 0.6 ~ 1bar;
(3) regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.4 ~ 0.8bar;
(4) flow controlling the ice chest tail gas entering converter burning is 30 ~ 120nm
3/ h.
Described converter is for carrying out the converter of methane steam reforming (SMR).
As preferably, regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 0.8bar; Regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.7bar; The flow controlling the ice chest tail gas entering converter burning is 90nm
3/ h.
Compared with prior art, the present invention has the following advantages:
(1) present method does not have poisonous gas due to tail gas content, may be used for any device fuel being had to demand.
(2) fuel saving Sweet natural gas that present method is covert, creates economic worth.
(3) present method decreases CO for environment
2discharge, has very large environmental protection.
(4) present method is because tail gas pressure is lower than lbarg, so this root pipeline safety, and can not impacting the pressure of SMR converter fuel system.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
A kind of hydrogen that utilizes is separated the method that ice chest tail gas does converter fuel with carbon monoxide, technical process as shown in Figure 1, in ice chest 1, a part for tail gas is connected to torch 2 by discharge tube 4 and burns, and remaining ice chest tail gas is connected to converter 3 as converter fuel by tail gas recycling pipeline 6; Discharge tube 4 is provided with to regulate and enters the ice chest exhaust flow of torch burning and the first variable valve 5 of pressure, tail gas recycling pipeline 6 is provided with to regulate and enters the ice chest exhaust flow of converter burning and the second variable valve 7 of pressure, and tail gas recycling pipeline 6 is also provided with the hand valve controlling pipe switch.Converter 3 is for carrying out the converter of methane steam reforming (SMR).
The method specifically comprises the following steps:
(1) open converter, make its normal production run;
(2) regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 0.8bar;
(3) regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.7bar;
(4) flow controlling the ice chest tail gas entering converter burning is 90nm
3/ h.
Because tail gas out passes through and air heat exchange from ice chest, be normal temperature state, therefore temperature does not participate in considering.The pressure of tail gas recycling pipeline is in normal process state.
Embodiment 2
A kind of method how ice chest tail gas being guided to SMR converter:
(1) SMR converter is driven, and normally produces;
(2) process settings, opens ice chest tail gas to all hand valves on the tail gas recycling pipeline of SMR converter.
(3) regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 0.6bar;
(4) regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.7bar;
(5) flow controlling the ice chest tail gas entering converter burning is 0nm
3/ h.
(6) second variable valve valve openings are that the 0%, first variable valve is opened, and now tail gas all goes emptying to burn.
Embodiment 3
A kind of method how ice chest tail gas being guided to SMR converter:
(1) SMR converter is driven, and normally produces;
(2) process settings, opens ice chest tail gas to all hand valves on the tail gas recycling pipeline of SMR converter.
(3) regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 0.8bar;
(4) regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.4bar;
(5) flow controlling the ice chest tail gas entering converter burning is 100nm
3/ h.
(6) first variable valve valve openings are that the 0%, second variable valve is opened, and now tail gas is all guided in SMR converter and burnt.
Embodiment 4
A kind of method how ice chest tail gas being guided to SMR converter:
(1) SMR converter is driven, and normally produces;
(2) process settings, opens ice chest tail gas to all hand valves on the tail gas recycling pipeline of SMR converter.
(3) regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 1bar;
(4) regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.8bar;
(5) flow controlling the ice chest tail gas entering converter burning is 120nm
3/ h.
(6) second variable valve valve openings are 35%, and now the pressure of tail gas recycling pipeline is in normal process state, but has impact for cold box system.
Claims (4)
1. one kind utilizes hydrogen to be separated the method that ice chest tail gas does converter fuel with carbon monoxide, it is characterized in that, a part of ice chest tail gas is connected to torch burning by discharge tube, residue ice chest tail gas is connected to converter, as converter fuel by tail gas recycling pipeline; Described discharge tube is provided with to regulate and enters the ice chest exhaust flow of torch burning and the variable valve of pressure, and described tail gas recycling pipeline is provided with to regulate and enters the ice chest exhaust flow of converter burning and the variable valve of pressure.
2. a kind of hydrogen that utilizes according to claim 1 is separated the method that ice chest tail gas does converter fuel with carbon monoxide, and it is characterized in that, the method specifically comprises the following steps:
(1) open converter, make its normal production run;
(2) regulate the variable valve on discharge tube, make the pressure of the ice chest tail gas entering torch burning be adjusted to 0.6 ~ 1bar;
(3) regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.4 ~ 0.8bar;
(4) flow controlling the ice chest tail gas entering converter burning is 30 ~ 120nm
3/ h.
3. a kind of hydrogen that utilizes according to claim 1 and 2 is separated the method that ice chest tail gas does converter fuel with carbon monoxide, and it is characterized in that, described converter is carry out methane steam reforming converter.
4. a kind of hydrogen that utilizes according to claim 2 is separated the method that ice chest tail gas does converter fuel with carbon monoxide, it is characterized in that, regulates the variable valve on discharge tube, makes the pressure of the ice chest tail gas entering torch burning be adjusted to 0.8bar; Regulate the variable valve on tail gas recycling pipeline, make the pressure of the ice chest tail gas entering converter burning be adjusted to 0.7bar; The flow controlling the ice chest tail gas entering converter burning is 90nm
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038124.9A CN104803353B (en) | 2014-01-26 | 2014-01-26 | Hydrogen is utilized to separate the method that ice chest tail gas does reburner fuel with carbon monoxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038124.9A CN104803353B (en) | 2014-01-26 | 2014-01-26 | Hydrogen is utilized to separate the method that ice chest tail gas does reburner fuel with carbon monoxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104803353A true CN104803353A (en) | 2015-07-29 |
| CN104803353B CN104803353B (en) | 2016-08-10 |
Family
ID=53688628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410038124.9A Expired - Fee Related CN104803353B (en) | 2014-01-26 | 2014-01-26 | Hydrogen is utilized to separate the method that ice chest tail gas does reburner fuel with carbon monoxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104803353B (en) |
-
2014
- 2014-01-26 CN CN201410038124.9A patent/CN104803353B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104803353B (en) | 2016-08-10 |
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|---|---|---|---|
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| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160810 Termination date: 20210126 |