CN105036080B - The method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation - Google Patents
The method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation Download PDFInfo
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- CN105036080B CN105036080B CN201510450239.3A CN201510450239A CN105036080B CN 105036080 B CN105036080 B CN 105036080B CN 201510450239 A CN201510450239 A CN 201510450239A CN 105036080 B CN105036080 B CN 105036080B
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- hydrogen chloride
- hydrochloric acid
- high concentration
- monoxone
- water
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Abstract
The invention discloses a kind of method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation, hydrogen chloride condensed is first reclaimed low-boiling point material by the method, washed with watery hydrochloric acid again, sulfuric acid oxidation organic impurities, prepare the purified water of ratio resistance≤500,000 Ω .cm；Then absorption equipment is cleaned with purified water；Again by hydrogen chloride gas purified water in the corrosion resistant absorber solution absorption of three-level tape loop cooling function；The refined hydrochloric acid of high concentration of volumetric concentration 35%~38% can be obtained.Whole technological design of the invention is reasonable, equipment investment is small, and energy consumption is low, and production process is easy to control, the hydrochloric acid quality better for preparing, impurity is few, especially with the corrosion resistant absorber solution absorption of three-level tape loop cooling function, can prepare the refined hydrochloric acid of high concentration that volumetric concentration is 35~38%, value is high, turn waste into wealth, environmental pollution and the wasting of resources are reduced, with important application value.
Description
Technical field
The present invention relates to a kind of preparation method of chemical reagent, and in particular to a kind of steady quality, technique is controllable, using life
The method for producing the tail gas hydrogen chloride refined hydrochloric acid of preparation high concentration that monoxone is produced.
Technical background
Chlorine generates monoxone and hydrogen chloride gas with acetic acidreaction, generally uses water absorbing hydrogen chloride gas, due to production
The impurity contained in the tail gas hydrogen chloride that monoxone is produced is more, can only prepare general industry grade hydrochloric acid.Because is produced from downstream
The quality requirement of product is high, and the impurity in general industry grade hydrochloric acid will influence the quality of product downstream.Downstream product is to ensure product
Matter, it has to which, with the synthetic hydrochloric acid of high-quality, so as to increased the cost of product, and prior art hydrogen chloride water absorbs into
Hydrochloric acid, can release substantial amounts of heat of solution, raise absorbing liquid temperature.Reduce the solubility of hydrogen chloride gas, prior art, chlorination
Concentration of the hydrogen in hydrochloric acid is difficult to reabsorb up to 31% or so, prepares concentrated hydrochloric acid and is difficult, and hydrochloric acid is used in downstream product
During, spent acid wastewater flow rate is big, and raw material are dissolved in waste acid water, serious waste of resources.
The content of the invention
Goal of the invention：Deficiency the invention aims to solve prior art presence, there is provided a kind of technological design is closed
Reason, yield is high, and steady quality, energy consumption is low, and the tail gas hydrogen chloride that production monoxone can be made full use of to produce prepares highly concentrated
The method of the refined hydrochloric acid of degree.
Technical scheme：In order to realize the above object the technical scheme that the present invention takes is：
A kind of method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation, including following step
Suddenly：
(1) the condensed device recovery low-boiling point material of tail gas that production monoxone is produced, the low boilers that recovery is obtained are taken
Matter continues transported to reaction system and continues to react；
(2) step (1) condensed hydrogen chloride gas, are washed by watery hydrochloric acid, after decontamination, then by condensing unit,
Separate low boiling entrainment；
(3) hydrogen chloride gas after step (2) washing are taken, using sulfuric acid oxidation organic impurities therein, then through gas-liquid
Purer hydrogen chloride gas are obtained after separation；
(4) life running water is taken, pure quartz sand filtration is first passed through, then again by charcoal absorption, then zwitterion is used
Resins exchange after purification, is processed through reverse osmosis equipment, and the purified water of ratio resistance≤500,000 Ω .cm is obtained；
(5) purified water prepared with step (4) cleans the three-level corrosion resistant absorber of tape loop cooling function；Then
Three-level tape loop cooling work(of the purified water that hydrogen chloride gas step (4) after step (3) treatment is prepared in cleaning
Can corrosion resistant absorber interior circulation absorption；Wherein first order absorption circulating slot adds coil pipe, leads to less than 10 DEG C of low temperature water cooling, moves
Heat of solution is walked, absorbing liquid temperature is reduced；Two grades add coil pipe, usual warm water to take away heat of solution with three-level absorption cycle groove；Body is obtained
The refined hydrochloric acid of high concentration of product concentration 35%~38%.
Preferably, it is above-described to prepare high concentration purified salt using the tail gas hydrogen chloride for producing monoxone generation
The method of acid, the watery hydrochloric acid that step (2) washing is used is 10%~30% hydrochloric acid for volume is dense.
Preferably, it is above-described to prepare high concentration purified salt using the tail gas hydrogen chloride for producing monoxone generation
The method of acid, sulfuric acid is the concentrated sulfuric acid that volumetric concentration is 90~98% in step (3).
Preferably, it is above-described to prepare high concentration purified salt using the tail gas hydrogen chloride for producing monoxone generation
The method of acid, reverse osmosis equipment uses reverse osmosis membrane in step (4).
Preferably, it is above-described to prepare high concentration purified salt using the tail gas hydrogen chloride for producing monoxone generation
The method of acid, leads to 1~10 DEG C of cooling water and removes heat of solution in step (5).
Preferably, it is above-described to prepare high concentration purified salt using the tail gas hydrogen chloride for producing monoxone generation
The method of acid, (5) two grades of step and three-level absorption cycle groove add coil pipe, lead to 25 DEG C~30 DEG C water and take away heat of solution；Volume is obtained
The refined hydrochloric acid of the high concentration of concentration 35%~38%.
The method that the present invention is provided, can reduce or remove the impurity in tail gas hydrogen chloride, and can remove absorbing liquid water
Impurity, and clean absorption equipment with the clean water that the present invention is prepared；Make the system clean free from admixture such as equipment and pipeline.
Compared to the prior art, the present invention has the following advantages：
The present invention screens the utilization for obtaining and produces the tail gas hydrogen chloride preparation high concentration that monoxone is produced by many experiments
The method of refined hydrochloric acid, rationally, equipment investment is small, and energy consumption is low, and production process is easy to control, prepares for whole technological design
Hydrochloric acid quality better, impurity is few, especially with the three-level corrosion resistant absorber of tape loop cooling function, fully removes heat of solution,
The refined hydrochloric acid of high concentration that volumetric concentration is 35~38% can be prepared, value is high, can play reduction disposal of pollutants, improves
The value of accessory substance, the effect turned waste into wealth, with important application value.
Specific implementation method
With reference to specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are to various equivalences of the invention
The modification of form falls within the application appended claims limited range.
Embodiment 1
A kind of method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation, including following step
Suddenly：
(1) the condensed device recovery low-boiling point material of tail gas that production monoxone is produced, the low boilers that recovery is obtained are taken
Matter continues transported to reaction system and continues to react；
(2) step (1) condensed hydrogen chloride gas, by volume it is dense be 20% watery hydrochloric acid washing, after decontamination, then
By condensing unit, low boiling entrainment is separated；
(3) hydrogen chloride gas after step (2) washing are taken, uses volumetric concentration therein organic for 95% sulfuric acid oxidation
Impurity, then obtains purer hydrogen chloride gas after gas-liquid separation；
(4) life running water is taken, pure quartz sand filtration is first passed through, then again by charcoal absorption, then zwitterion is used
Resins exchange after purification, is processed through reverse osmosis membrane equipment, and the purified water of ratio resistance≤500,000 Ω .cm is obtained；
(5) purified water prepared with step (4) cleans the three-level corrosion resistant absorber of tape loop cooling function；Then
Three-level tape loop cooling work(of the purified water that hydrogen chloride gas step (4) after step (3) treatment is prepared in cleaning
Can corrosion resistant absorber interior circulation absorption；Wherein first order absorption circulating slot adds coil pipe, leads to 1~10 DEG C of low temperature water cooling, moves
Heat of solution is walked, absorbing liquid temperature is reduced；Two grades add coil pipe with three-level absorption cycle groove, lead to 25 DEG C of water and take away heat of solution；Body is obtained
The refined hydrochloric acid of high concentration of product concentration 36.5%.
Embodiment 2
A kind of method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation, including following step
Suddenly：
(1) the condensed device recovery low-boiling point material of tail gas that production monoxone is produced, the low boilers that recovery is obtained are taken
Matter continues transported to reaction system and continues to react；
(2) step (1) condensed hydrogen chloride gas, by volume it is dense be 30% watery hydrochloric acid washing, after decontamination, then
By condensing unit, low boiling entrainment is separated；
(3) hydrogen chloride gas after step (2) washing are taken, uses volumetric concentration therein organic for 90% sulfuric acid oxidation
Impurity, then obtains purer hydrogen chloride gas after gas-liquid separation；
(4) life running water is taken, pure quartz sand filtration is first passed through, then again by charcoal absorption, then zwitterion is used
Resins exchange after purification, is processed through reverse osmosis membrane equipment, and the purified water of ratio resistance≤500,000 Ω .cm is obtained；
(5) purified water prepared with step (4) cleans the three-level corrosion resistant absorber of tape loop cooling function；Then
Three-level tape loop cooling work(of the purified water that hydrogen chloride gas step (4) after step (3) treatment is prepared in cleaning
Can corrosion resistant absorber interior circulation absorption；Wherein first order absorption circulating slot adds coil pipe, leads to 1~10 DEG C of low temperature water cooling, moves
Heat of solution is walked, absorbing liquid temperature is reduced；Two grades add coil pipe with three-level absorption cycle groove, lead to 25 DEG C of water and take away heat of solution；Body is obtained
The refined hydrochloric acid of high concentration of product concentration 38%.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (1)
- It is 1. a kind of to prepare the method that high concentration refines hydrochloric acid using the tail gas hydrogen chloride for producing monoxone generation, it is characterised in that Comprise the following steps：(1) take the condensed device of tail gas that production monoxone produces and reclaim low-boiling point material, the low-boiling point material that recovery is obtained after The continuous reaction system that is transported to continues to react；(2) step (1) condensed hydrogen chloride gas, by the salt acid elution that volumetric concentration is 10%~30%, after decontamination, Again by condensing unit, low boiling entrainment is separated；(3) hydrogen chloride gas after step (2) washing are taken, uses volumetric concentration therein organic for 90~98% sulfuric acid oxidation Impurity, then obtains purer hydrogen chloride gas after gas-liquid separation；(4) life running water is taken, pure quartz sand filtration is first passed through, then again by charcoal absorption, then zwitterion resin is used Exchange after purification, processed through reverse osmosis equipment, the purified water of ratio resistance≤500,000 Ω .cm is obtained；(5) purified water prepared with step (4) cleans the three-level corrosion resistant absorber of tape loop cooling function；Then will step Suddenly the purified water that the hydrogen chloride gas step (4) after (3) treatment is prepared is resistance in the three-level tape loop cooling function of cleaning The absorber interior circulation of corrosion absorbs；Wherein first order absorption circulating slot adds coil pipe, leads to less than 10 DEG C of low temperature water cooling, removes molten It is antipyretic, reduce absorbing liquid temperature；Two grades add coil pipe, usual warm water to take away heat of solution with three-level absorption cycle groove；Volume is obtained dense The refined hydrochloric acid of the high concentration of degree 35%~38%；Reverse osmosis equipment uses reverse osmosis membrane in step (4)；Lead to 1~10 DEG C of cooling water in step (5) and remove heat of solution；(5) two grades of step and three-level absorption cycle groove add coil pipe, lead to 25 DEG C~30 DEG C water and take away heat of solution；Volumetric concentration is obtained The refined hydrochloric acid of 35%~38% high concentration.
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| CN201510450239.3A CN105036080B (en) | 2015-07-28 | 2015-07-28 | The method that the refined hydrochloric acid of high concentration is prepared using the tail gas hydrogen chloride for producing monoxone generation |
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| CN105036080B true CN105036080B (en) | 2017-06-16 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190396A (en) * | 2006-11-28 | 2008-06-04 | 张天德 | Chloroethanoic acid tail gas purifying and comprehensive utilization method |
| CN101219943A (en) * | 2007-01-08 | 2008-07-16 | 张天德 | Method for purifying and using chloroethanoic acid tail gas |
| CN104353345A (en) * | 2014-11-11 | 2015-02-18 | 许昌东方化工有限公司 | Tail gas treatment method in chloroacetic acid production process |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190396A (en) * | 2006-11-28 | 2008-06-04 | 张天德 | Chloroethanoic acid tail gas purifying and comprehensive utilization method |
| CN101219943A (en) * | 2007-01-08 | 2008-07-16 | 张天德 | Method for purifying and using chloroethanoic acid tail gas |
| CN104353345A (en) * | 2014-11-11 | 2015-02-18 | 许昌东方化工有限公司 | Tail gas treatment method in chloroacetic acid production process |
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