CN103505898A - Corrosion-resistant methanol vaporizer kettle - Google Patents
Corrosion-resistant methanol vaporizer kettle Download PDFInfo
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- CN103505898A CN103505898A CN201310099534.XA CN201310099534A CN103505898A CN 103505898 A CN103505898 A CN 103505898A CN 201310099534 A CN201310099534 A CN 201310099534A CN 103505898 A CN103505898 A CN 103505898A
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- methyl alcohol
- alcohol vaporizing
- vaporizing tower
- tower
- dimethyl ether
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Abstract
The invention relates to the technical field of production manufacturing in chemical industry, and discloses a corrosion-resistant methanol vaporizer kettle which comprises a methanol vaporizer, a measuring pump and a dimethyl ether distillation tower, wherein the methanol vaporizer, measuring pump and dimethyl ether distillation tower are sequentially connected through pipelines; the methanol vaporizer is provided with an on-line pH detection device; a programmable controller is arranged between the measuring pump and the on-line pH detection device; and an alkali addition device is arranged between the dimethyl ether rectification tower and the methanol vaporizer. By matching the on-line pH detection device, measuring pump and alkali addition device, the kettle ensures that the kettle solution of methanol from the dimethyl ether rectification tower and water is weakly alkaline when entering the methanol vaporizer.
Description
Technical field
The present invention relates to Chemical Manufacture manufacturing technology field, relate in particular to a kind of anti-corrosion methyl alcohol vaporizing tower reactor.
Background technology
Dimethyl ether is a kind of rising chemical products.It is as industrial chemicals, except alternative CFC is used to reduce aerosol to the destruction of atmospheric ozone layer for aerosol industry as spray carrier, still produce the intermediate of synthetic gasoline and alkene, alternative traditional oil is produced the production line of gasoline and alkene.Dimethyl ether is a kind of desirable clean fuel especially, is the substitute of diesel fuel of a large amount of consumption, can be used as again the LPG that domestic fuel replaces large consumption.
The method of at present traditional industrial production dimethyl ether is that methyl alcohol dewaters under the effect of catalyst, prepares dimethyl ether.And in preparing dimethyl ether process, need methyl alcohol to carry out vaporization process, but owing to adopting methanol recovery device, when methyl alcohol out of dimethyl ether rectifying column and water circulation liquid enter methyl alcohol vaporizing tower with acidic materials, the tower reactor that causes vaporizing has obvious corrosion phenomenon, and a large amount of thinning phenomenons occur tower reactor wall thickness.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is how to guarantee to keep alkalescent when the still liquid of methyl alcohol out of dimethyl ether rectifying column and water enters methyl alcohol vaporizing tower.
(2) technical scheme
In order to address the above problem, the invention provides a kind of anti-corrosion methyl alcohol vaporizing tower reactor comprises: methyl alcohol vaporizing tower, measuring pump, dimethyl ether destilling tower, described methyl alcohol vaporizing tower, measuring pump, dimethyl ether destilling tower successively pipeline connect, described methyl alcohol vaporizing tower is equipped with online PH checkout gear, between described measuring pump and described online PH checkout gear, be provided with Programmable Logic Controller, in the middle of described dimethyl ether rectifying column and methyl alcohol vaporizing tower pipeline, be provided with adder-subtractor.
Wherein, described methyl alcohol vaporizing tower is made by stainless steel.
Wherein, described adder-subtractor adopts NaOH as neutralizer.
Wherein, in described adder-subtractor, agitating device is installed.
Wherein, described methyl alcohol vaporizing tower reactor also comprises: Dehydration of methanol device, described Dehydration of methanol device is connected with methyl alcohol vaporizing tower.
Wherein, described methyl alcohol vaporizing tower reactor also comprises: methyl alcohol storage tank, described methyl alcohol storage tank is connected with methyl alcohol vaporizing tower.
(3) beneficial effect
The present invention is by the cooperation of online PH checkout gear, measuring pump and adder-subtractor, guaranteed to be alkalescent when the still liquid of methyl alcohol out of dimethyl ether rectifying column and water enters methyl alcohol vaporizing tower.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the structural representation of one embodiment of the present invention, comprise: methyl alcohol vaporizing tower 5, measuring pump 7, dimethyl ether destilling tower 2, described methyl alcohol vaporizing tower 5, measuring pump 7, dimethyl ether destilling tower 2 successively pipeline connects, described methyl alcohol vaporizing tower fills 5 online PH checkout gear 4, between described measuring pump 7 and described online PH checkout gear 4, be provided with Programmable Logic Controller 9, described dimethyl ether rectifying column 2 and the middle adder-subtractor 3 that is provided with of methyl alcohol vaporizing tower pipeline 5, in dimethyl ether production wastewater, contain acidic materials and detect its PH at 4.5-6, there is to obvious corrosiveness methyl alcohol vaporizing tower middle and lower part, the online PH checkout gear 4 of the present invention, the cooperation of measuring pump 7 and adder-subtractor 3, guaranteed to be alkalescent when the still liquid of methyl alcohol out of dimethyl ether rectifying column 2 and water enters methyl alcohol vaporizing tower 5.
In order to strengthen described methyl alcohol vaporizing tower 5 anti-corrosion capabilities, preferably, described methyl alcohol vaporizing tower 5 is made by stainless steel.
Preferably, described adder-subtractor 3 adopts NaOH as neutralizer.
For the flaky sodium hydrate in adder-subtractor 3 is dissolved rapidly, preferably, agitating device 8 is installed in described adder-subtractor.
Described methyl alcohol vaporizing tower reactor also comprises: for the Dehydration of methanol device 6 of Methanol Recovery, described Dehydration of methanol device 6 is connected with methyl alcohol vaporizing tower 5.
Described methyl alcohol vaporizing tower reactor also comprises: store the methyl alcohol storage tank 1 of methanol feedstock, described methyl alcohol storage tank 1 is connected with methyl alcohol vaporizing tower 5.
Material benzenemethanol from methyl alcohol storage tank 1 enters methyl alcohol vaporizing tower 5, and the still liquid overflowing from dimethyl ether rectifying column 2 tower reactors (key component is methyl alcohol, water) also enters methyl alcohol vaporizing tower 5, methyl alcohol vaporizing tower 5 adopts the stronger stainless steel material of anti-corrosion capability, in acid solution, easily there is galvanic cell reaction in original carbon steel tower reactor, iron in carbon steel loses electronics as galvanic cell negative pole and becomes ion and enter still liquid, corrosion is accelerated in galvanic cell reaction, and liberation of hydrogen corrosion can reduce and accelerated corrosion speed with pH value.And at the middle adder-subtractor 3 that is provided with of dimethyl ether rectifying column 2 and methyl alcohol vaporizing tower 5 pipelines, this device adopts NaOH NAOH as neutralizer, agitating device is installed in adder-subtracter 3, can make flaky sodium hydrate dissolve rapidly.By being arranged on the online PH checkout gear 4 monitoring methyl alcohol vaporizing tower 5 tower reactor solution pH values of methyl alcohol vaporizing tower 5 tower reactors.Online PH checkout gear 4 carries analog signal to Programmable Logic Controller 9, Programmable Logic Controller 9 is controlled the measuring pump 7 on adder-subtractor 3 pipelines again, to guarantee keeping alkalescent when the still liquid of methyl alcohol out of dimethyl ether rectifying column 2 and water enters methyl alcohol vaporizing tower 5, pH value is between 7.5-8.5, to prevent the serious corrosion of methyl alcohol vaporizing tower 5 tower reactor.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (6)
1. an anti-corrosion methyl alcohol vaporizing tower reactor, it is characterized in that, described methyl alcohol vaporizing tower reactor comprises: methyl alcohol vaporizing tower, measuring pump, dimethyl ether destilling tower, described methyl alcohol vaporizing tower, measuring pump, dimethyl ether destilling tower successively pipeline connect, described methyl alcohol vaporizing tower is equipped with online PH checkout gear, between described measuring pump and described online PH checkout gear, be provided with Programmable Logic Controller, in the middle of described dimethyl ether rectifying column and methyl alcohol vaporizing tower pipeline, be provided with adder-subtractor.
2. methyl alcohol vaporizing tower reactor as claimed in claim 1, is characterized in that, described methyl alcohol vaporizing tower is made by stainless steel.
3. methyl alcohol vaporizing tower reactor as claimed in claim 1 or 2, is characterized in that, described adder-subtractor adopts NaOH as neutralizer.
4. methyl alcohol vaporizing tower reactor as claimed in claim 3, is characterized in that, in described adder-subtractor, agitating device is installed.
5. methyl alcohol vaporizing tower reactor as claimed in claim 1, is characterized in that, described methyl alcohol vaporizing tower reactor also comprises: Dehydration of methanol device, described Dehydration of methanol device is connected with methyl alcohol vaporizing tower.
6. methyl alcohol vaporizing tower reactor as claimed in claim 1, is characterized in that, described methyl alcohol vaporizing tower reactor also comprises: methyl alcohol storage tank, described methyl alcohol storage tank is connected with methyl alcohol vaporizing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310099534.XA CN103505898A (en) | 2013-03-26 | 2013-03-26 | Corrosion-resistant methanol vaporizer kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310099534.XA CN103505898A (en) | 2013-03-26 | 2013-03-26 | Corrosion-resistant methanol vaporizer kettle |
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| Publication Number | Publication Date |
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| CN103505898A true CN103505898A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310099534.XA Pending CN103505898A (en) | 2013-03-26 | 2013-03-26 | Corrosion-resistant methanol vaporizer kettle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735354A (en) * | 2021-09-08 | 2021-12-03 | 东华工程科技股份有限公司 | Method and device for treating alcohol-containing wastewater in coal-to-ethylene glycol technology |
| CN114130048A (en) * | 2021-10-22 | 2022-03-04 | 中盐安徽红四方股份有限公司 | Acid corrosion prevention device and method for rectifying methanol dehydration high-pressure tower of CTEG device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202277823U (en) * | 2011-10-28 | 2012-06-20 | 陕西长青能源化工有限公司 | Alkaline adding device for producing methanol from coal |
| CN202694170U (en) * | 2012-05-16 | 2013-01-23 | 湖南省电力公司科学研究院 | Cooling water purifying treatment device |
| CN203108246U (en) * | 2013-03-26 | 2013-08-07 | 新能(张家港)能源有限公司 | Methanol vaporization tower kettle |
-
2013
- 2013-03-26 CN CN201310099534.XA patent/CN103505898A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202277823U (en) * | 2011-10-28 | 2012-06-20 | 陕西长青能源化工有限公司 | Alkaline adding device for producing methanol from coal |
| CN202694170U (en) * | 2012-05-16 | 2013-01-23 | 湖南省电力公司科学研究院 | Cooling water purifying treatment device |
| CN203108246U (en) * | 2013-03-26 | 2013-08-07 | 新能(张家港)能源有限公司 | Methanol vaporization tower kettle |
Non-Patent Citations (1)
| Title |
|---|
| 葛志跃等: "甲醇气相法制备二甲醚常见问题及解决措施", 《大氮肥》, vol. 35, no. 1, 29 February 2012 (2012-02-29), pages 35 - 37 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735354A (en) * | 2021-09-08 | 2021-12-03 | 东华工程科技股份有限公司 | Method and device for treating alcohol-containing wastewater in coal-to-ethylene glycol technology |
| CN114130048A (en) * | 2021-10-22 | 2022-03-04 | 中盐安徽红四方股份有限公司 | Acid corrosion prevention device and method for rectifying methanol dehydration high-pressure tower of CTEG device |
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Application publication date: 20140115 |