CN85105317A - From gas, the method for eccysis phosphuret-(t)ed hydrogen from acetylene gas particularly - Google Patents
From gas, the method for eccysis phosphuret-(t)ed hydrogen from acetylene gas particularly Download PDFInfo
- Publication number
- CN85105317A CN85105317A CN198585105317A CN85105317A CN85105317A CN 85105317 A CN85105317 A CN 85105317A CN 198585105317 A CN198585105317 A CN 198585105317A CN 85105317 A CN85105317 A CN 85105317A CN 85105317 A CN85105317 A CN 85105317A
- Authority
- CN
- China
- Prior art keywords
- acid
- washing
- gas
- carry out
- acetylene gas
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
Abstract
A kind of from gas the method for eccysis phosphuret-(t)ed hydrogen or other alkaline impurities (for example ammonia), especially from acetylene gas, carry out the method for this type of processing with non-oxidizing mineral acid, wherein specially refer to phosphoric acid and carry out this processing, when handling with phosphoric acid, washing acid after the use can generate by oxidation, need a kind of solution of preparation in this method, can avoid those shortcomings in the old method with this solution, particularly can handle moist gas and can give up and add the vitriolic method with this solution.More than these requirements can be by adding 5%～80% acid, especially add 70% phosphoric acid and reach.
Description
Content of the present invention is the method about eccysis phosphuret-(t)ed hydrogen from gas or other alkaline impurities (for example ammonia), especially from acetylene gas, carry out the method that this class is handled with non-oxidizing mineral acid, wherein specially refer to about carry out the method for this kind processing with phosphoric acid, at this moment, the washing acid after the use can be regenerated by oxidation.
Method with vitriol oil eccysis phosphuret-(t)ed hydrogen from the acetylene gas that produces is well-known.But those old methods have many shortcomings.For example must make the acetylene forced drying, otherwise the moisture in the gas will make vitriolic concentration descend rapidly.And in this diluting reaction very strong heat effect can to cause the polymerization of acetylene gas also be the shortcoming of old method.Also having a shortcoming is that the vitriolic reduction causes forming sulfurous gas, thereby must wash with sodium hydroxide.Remove this and also have the problem of workpiece material, because the scope of sulfuric acid concentration is very wide, in so wide concentration range, the erosion resistance of many workpiece materials is not enough.Above-mentioned heat effect and acid catalysis finally cause the seriously impure of acid, make the later acid of washing owing to pollute and possibly can't exercise usefulness again.Such pollution itself causes scavenging process repeatedly.Need the sort of device again with very long time of repose for this reason.
In order partly to avoid above-mentioned shortcoming, in No. 715678, the Deutsches Reichs-Patent method that the non-oxidizing mineral acid of a kind of usefulness washs has been proposed, promptly wash with 80% to 100% sulfuric acid phosphoric acid or their mixture, yet 80% to 100% the phosphoric acid that is write out in patent specification of this formal printing is not to be suitable for method described in this patent fully, because the sour viscosity that concentration is high like this is very big, the problem of sputter and sprinkling will appear.
In old method, one drying process of also necessary arrangement, make dew point move on to-20 ℃ by silica gel in this procedure, in this old method, be only to relate to vitriolic, and also always has the foregoing shortcoming that for example produces sulfurous gas in the method, sulfurous gas then must be with sodium hydroxide eccysis in addition, and for these reasons, the packing tower in the old law also just must often purify.
Another shortcoming in the old method is, requires sulfuric acid to be transported in the container on washing tower top with the pressurized air of mammoth pump in the vitriolic regenerative process, make phosphuret-(t)ed hydrogen oxidation in this container simultaneously, thereby sulfuric acid polluted by phosphoric acid promptly.
The objective of the invention is to prepare a kind of solution that can avoid above-mentioned shortcoming, especially they can be handled moist gas and can give up and add the vitriolic method.
According to the present invention, described method was solved by following technology when above-mentioned requirements can be begun by this specification sheets, promptly adopted 5% to 80% acid, and especially 70% phosphoric acid is as washings.
The major advantage of the inventive method is that it is suitable for by the saturated gas of water vapor, thereby drying step will be unnecessary.Like this, the concentration of washings can be too not high, thereby in fact just do not have the acid catalyzed polymerisation process yet.In addition, owing to the heat effect that produces of dilution and owing to overheated and polyreaction that finally cause has also all reduced.An even more important advantage of the present invention is that the necessity of installing washing tower seldom or does not at all have this necessity, pollutes and in fact no longer exist, and has guaranteed that in other words related device has long life cycle.
According to the present invention, made the not too dense phosphoric acid of adding become possibility, the corrosive problem is alleviated.
Do such arrangement among the present invention, promptly in the regenerative process of washing acid, fed pure oxygen.At this moment, needed amount of oxygen is seldom, thereby considers from economic angle, makes the enforcement of present method become possibility.
In the present invention, seeing, if the part in the regenerated washing acid is incorporated in the working cycle, so in the washing acid contaminated and comprise that of ammonium phosphate partly can be through further being processed into fertilizer.
For the processing of acetylene gas, further arrangement is also arranged among the present invention, promptly, the acetylene gas in the washing acid is isolated and it is burnt make washing acid carry out regenerated simultaneously by oxygenant.
Another characteristics of the present invention are, at first do not make to carry out a milk of lime through predrying and pre-cooled moist acetylene gas and wash, and and then lead to and carry out in the isolating washing composition of phosphuret-(t)ed hydrogen.Because generally speaking, temperature in the carbide-feed generator is very high, the loss of acetylene has only by quick refrigerative way remains in certain scope it, if adopt the milk of lime washing during acetylene gas that the processing producer produces, then can be with the cooling effect that acquires a certain degree simultaneously, this point is very useful.
The present invention according to the representative of back the figure of main flow process make an explanation, the device described in this figure is still some of the present invention.
Arrow 1 expression unstripped gas is at the inlet of being implemented on one of the inventive method device, and unstripped gas enters into washing tower 2, according to the given direction of arrow 3 from then on scavenging tower come out and leave this device.The phosphoric acid of feeding 70% is as washing acid in washing tower 2, and the circulation of washing acid is to be undertaken by the direction shown in the garden shape arrow 4.Washing acid is led in the regenerator column 5 after leaving washing tower 2, leaves regenerator column 5 at 6 places, enters into fore-lying device 7, and wherein a part of then tributary is taken away by pump 8, is reintroduced in the washing tower 2 through over-heat-exchanger 9.
For washing acid is regenerated in regenerator column 5, press arrow 10 finger direction of giving and in regenerator column 5, feed pure oxygen.Oxygen is at first led in the safety dehydration device 11, enters then in the regenerator column, is passed into again in the safety dehydration device 12 earlier when coming out as the gas of emitting, and leaves this device with arrow 13 directions.
Represent the residue phosphoric acid of discharging with arrow 14 at last.This part phosphoric acid can be prepared into the product of fertilizer one class by further processing.
Certainly, aforesaid method can be done many changes under the prerequisite that does not depart from essence spirit of the present invention.In case of necessity, particularly this method can be divided into multiple operation or the like.
Claims (7)
1, the method for eccysis phosphuret-(t)ed hydrogen or other impurity (for example ammonia) from gas, particularly from acetylene gas, carry out the method for this kind processing with non-oxidizing mineral acid, wherein, relate in particular to carry out the method for this processing with phosphoric acid, at this moment, the washing acid after the use can be regenerated by oxidation, being characterized as of this method, the acid of adding 5% to 80%, particularly 70% phosphoric acid is as washing acid.
2, according to claim 1 desired method, it is characterized by, the regeneration of above-mentioned washing acid is to carry out through feeding pure oxygen.
3, according to claim 2 desired methods, it is characterized by, water the some of washing in the acid after the regeneration and drawn and get back in the round-robin process.
4, according to aforementioned desired method in any one, it is characterized by, washing is in a venturi washing tower with droplet separator of using do aftertreatment.
5, according to the aforementioned method of desired processing acetylene gas in any one, it is characterized by,, from washing acid, isolate the acetylene gas that is dissolved in wherein, and it is burnt make the washing acid regenerated simultaneously with oxygenant.
6, according to claim 5 desired methods, it is characterized by, at first do not make not acetylene gas carry out a milk of lime washing, along with they being led in the washing tower that separates phosphuret-(t)ed hydrogen through the humidity of super-dry and precooling.
7, according to the desired method of aforementioned any one claim, it is characterized by, in the washing acid contaminated and comprise ammonium phosphate that partly can and make fertilizer through further processing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843439368 DE3439368A1 (en) | 1984-10-27 | 1984-10-27 | Process for scrubbing out phosphorus hydrides, in particular from acetylene |
| DEP3439368.4 | 1984-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85105317A true CN85105317A (en) | 1986-04-10 |
Family
ID=6248893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585105317A Pending CN85105317A (en) | 1984-10-27 | 1985-07-11 | From gas, the method for eccysis phosphuret-(t)ed hydrogen from acetylene gas particularly |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN85105317A (en) |
| DE (1) | DE3439368A1 (en) |
| ES (1) | ES8604427A1 (en) |
| ZA (1) | ZA856020B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626195A (en) * | 2017-10-19 | 2018-01-26 | 云南江磷集团股份有限公司 | The tail gas treatment process of red phosphorus purification |
-
1984
- 1984-10-27 DE DE19843439368 patent/DE3439368A1/en not_active Withdrawn
-
1985
- 1985-06-28 ES ES544686A patent/ES8604427A1/en not_active Expired
- 1985-07-11 CN CN198585105317A patent/CN85105317A/en active Pending
- 1985-08-09 ZA ZA856020A patent/ZA856020B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA856020B (en) | 1986-04-30 |
| ES8604427A1 (en) | 1986-02-01 |
| ES544686A0 (en) | 1986-02-01 |
| DE3439368A1 (en) | 1986-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |