CN102838480A - Preheating method for hydrogen gas in hydrogenation reactor - Google Patents
Preheating method for hydrogen gas in hydrogenation reactor Download PDFInfo
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- CN102838480A CN102838480A CN2011101655191A CN201110165519A CN102838480A CN 102838480 A CN102838480 A CN 102838480A CN 2011101655191 A CN2011101655191 A CN 2011101655191A CN 201110165519 A CN201110165519 A CN 201110165519A CN 102838480 A CN102838480 A CN 102838480A
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- hydrogen gas
- hydrogen
- preheater
- hydrogenation reactor
- preheating method
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Abstract
A preheating method for hydrogen gas in a hydrogenation reactor, belongs to the field of chemical production. A hydrogen gas tank is in connection with a hydrogen gas preheater through a gas pipeline, and the hydrogen gas preheater in connection with the reactor. The preheating method for the hydrogen gas in a hydrogenation reactor is advantageous in that: by no-longer using the conventional technology of mixing high-pressure steam with hydrogen gas, the influence of the pressure fluctuation of high-pressure steam or low pressure to the heating effect of hydrogen gas is eliminated; and the temperature of hydrogen gas is stable and the reaction is stable, by preheating the hydrogen gas directly using the preheater.
Description
Technical fieldThe present invention relates to hydrogenator hydrogen pre-heating mean, belong to chemical production field.
Background technologyPure terephthalic acid (PTA) is the important source material of polyester industrial, mainly adopts the production of p-Xylol (PX) air liquid phase oxidation.The PX oxidation obtains crude terephthalic acid (CTA), obtains the pure terephthalic acid through unifining again.Before hydrogenation process, carry out preheating to hydrogen, the preheating temperature that hydrogen will reach is: 250-270 ℃; The reason of making like this is: 1, by the temperature of reaction decision, if hydrogen temperature is low excessively, and the place that hydrogen arrives, reactant is prone to that caking is arranged, and can stop up bed; 2, if adopt the hydrogen of not heating directly to get in the reactor drum,, cause thermal stresses higher, damage pipe fitting at the mouth of pipe place that gets into reactor drum because the temperature difference is big.Traditional hydrogen pre-heating mean is: adopt hydrogen and the preheating of hot, high pressure steam; When the pressure surge of HP steam is perhaps low; Hydrogen can not be by effective heating, and the hydrogen temperature fluctuation is bigger, will cause the generation of above-mentioned two kinds of unfavorable phenomenons; Disturbance also can take place in bed in addition, makes product quality defective.
Summary of the inventionThe purpose of this invention is to provide a kind of hydrogenator hydrogen pre-heating mean.
For realizing above-mentioned purpose, the technical solution that the present invention adopted is: the hydrogen gas-holder is delivered to the hydrogen preheater through gas pipe line, and the thermal source of preheater is the self-produced 55bar flash steam of device, gets into reactor drum after the preheating of hydrogen process preheater.
Beneficial effect of the present invention: do not re-use HP steam and hydrogen blended traditional technology; Eliminated fluctuation or the pressure of high-pressure steam pressure when on the low side to the hydrogen heats; Utilize the hydrogen preheater that hydrogen is carried out preheating; Directly to the reactor drum hydrogen supply, hydrogen temperature is stable, stable reaction then.
Description of drawings
Fig. 1 is the structure diagram of hydrogenator hydrogen pre-heating system.
Fig. 1 Reference numeral is following: 1, hydrogen gas-holder, 2, gas pipe line, 3, the hydrogen preheater, 4, reactor drum.
Embodiment
In the synoptic diagram of hydrogenator hydrogen pre-heating system shown in Figure 1, its primary structure comprises: hydrogen gas-holder 1 connects hydrogen preheater 3 through gas pipe line 2, and hydrogen preheater 3 is through gas pipe line 2 ligation devices 4.
Principle of work of the present invention: utilize preheater that hydrogen is heated, thermal source is the self-produced 55bar flash steam of device, and this technology can make the hydrogen homogeneous heating, and temperature fluctuation is less, is beneficial to into reactor drum participation reaction, makes reaction more stable, guarantees quality product.
Claims (2)
1. hydrogenator hydrogen pre-heating mean is characterized in that: hydrogen gas-holder (1) connects hydrogen preheater (3) through gas pipe line (2), and hydrogen preheater (3) is through gas pipe line (2) ligation device (4).
2. hydrogenator hydrogen pre-heating mean according to claim 1 is characterized in that: utilize hydrogen preheater (3) that hydrogen is carried out preheating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101655191A CN102838480A (en) | 2011-06-20 | 2011-06-20 | Preheating method for hydrogen gas in hydrogenation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101655191A CN102838480A (en) | 2011-06-20 | 2011-06-20 | Preheating method for hydrogen gas in hydrogenation reactor |
Publications (1)
| Publication Number | Publication Date |
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| CN102838480A true CN102838480A (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011101655191A Pending CN102838480A (en) | 2011-06-20 | 2011-06-20 | Preheating method for hydrogen gas in hydrogenation reactor |
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| CN (1) | CN102838480A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104825A (en) * | 2007-07-27 | 2008-01-16 | 无锡永大天然气集团有限公司 | Method for producing liquefied natural gas of mine gas |
| CN101891718A (en) * | 2009-05-22 | 2010-11-24 | 山西侨友化工股份有限公司 | Continuous production process for preparing succinyl oxide by maleic anhydride hydrogenation |
| CN101962310A (en) * | 2010-09-19 | 2011-02-02 | 湖南松源化工有限公司 | Method for continuously producing pinane by pinene and device therefor |
| CN101962309A (en) * | 2010-09-19 | 2011-02-02 | 湖南松源化工有限公司 | Method and device for continuously producing p-menthane by utilizing bipentene |
-
2011
- 2011-06-20 CN CN2011101655191A patent/CN102838480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104825A (en) * | 2007-07-27 | 2008-01-16 | 无锡永大天然气集团有限公司 | Method for producing liquefied natural gas of mine gas |
| CN101891718A (en) * | 2009-05-22 | 2010-11-24 | 山西侨友化工股份有限公司 | Continuous production process for preparing succinyl oxide by maleic anhydride hydrogenation |
| CN101962310A (en) * | 2010-09-19 | 2011-02-02 | 湖南松源化工有限公司 | Method for continuously producing pinane by pinene and device therefor |
| CN101962309A (en) * | 2010-09-19 | 2011-02-02 | 湖南松源化工有限公司 | Method and device for continuously producing p-menthane by utilizing bipentene |
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Application publication date: 20121226 |