CN102718186A - Hydrogen chloride and ammonia co-generation method - Google Patents
Hydrogen chloride and ammonia co-generation method Download PDFInfo
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- CN102718186A CN102718186A CN201210176046XA CN201210176046A CN102718186A CN 102718186 A CN102718186 A CN 102718186A CN 201210176046X A CN201210176046X A CN 201210176046XA CN 201210176046 A CN201210176046 A CN 201210176046A CN 102718186 A CN102718186 A CN 102718186A
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Abstract
The invention discloses a hydrogen chloride and ammonia co-generation method which comprises the following steps: 1) taking a full reaction between magnesium chloride and water to discharge hydrogen chloride gas; and 2) adding ammonium chloride in the system of step 1) to take a full reaction with water to discharge ammonia. The co-generation method has the characteristics of fast reaction speed, high reaction efficiency and high conversion rate of reactants.
Description
Technical field
The present invention relates to a kind of method of producing hydrogenchloride and ammonia of uniting.
Background technology
Soda ash is one of important chemical material, is widely used in the production of multiple industry such as glass industry, Iron And Steel Industry, chemical industry, medicine industry, enamel, weaving, printing and dyeing, papermaking, food.Along with the fast development of economy, soda ash output also sharply increases in recent years.At present; Domestic main alkali-making process has ammonia alkali and joins two kinds of methods of alkali, and the ammonia recovery is that ammonium chloride and calcium hydroxide are reacted generation ammonia and calcium chloride in the solvay soda process, and ammonia has obtained recovery like this; But also generate a large amount of calcium chloride waste residues simultaneously; Making a large amount of cl ionss run off, so not only be a kind of loss economically, and the loss of cl ions also pollutes the environment.In soda and sociation center, though, can be used as chemical fertilizer as a kind of product, uses ammonium chloride, and in recent years along with industrial expansion, ammonium chloride is increasing, because its aqueous solution is acid, makes soil compaction easily, and ammonium chloride is restricted in the chemical fertilizer application facet.For above-mentioned reasons; The processing of ammonium chloride has become the bottleneck problem of soda industry; If ammonium chloride is resolved into hydrogen chloride gas and ammonia, ammonia can recycle, and hydrogenchloride also can be applied at the chemical industry numerous areas; Above the problems of two kinds of system alkali methods also just be readily solved, therefore novel soda ash production technique is a soda industry development in future direction.
And in the prior art, utilize ammonium chloride to prepare hydrogenchloride and ammonia, and its purity is not high, and perhaps reactive system is too complicated.
Summary of the invention
The purpose of this invention is to provide a kind of method of producing hydrogenchloride and ammonia of uniting.
The technical scheme that the present invention taked is:
A kind of method of producing hydrogenchloride and ammonia of uniting may further comprise the steps:
1) magnesium chloride and water are fully reacted, reaction system discharges hydrogen chloride gas;
2) adding ammonium chloride and water fully react in the system of step 1), and reaction system discharges ammonia.
In the step 1), the mol ratio of magnesium chloride and water is (1～3): 1.
The mol ratio of magnesium chloride and ammonium chloride is (1～3): 1.
Step 2) in, the mass ratio of water and ammonium chloride is (1～4): 1.
The reaction times of step 1) is 2-4h.
The temperature of reaction of step 1) is 220-410 ℃.
Step 2) reaction times is 1-2h.
Step 2) temperature of reaction is 105～136 ℃.
In the step 1), water is liquid water or water vapour.
Step 2) in, the order number of ammonium chloride is the 40-80 order.
The invention has the beneficial effects as follows: speed of response of the present invention is fast, and reaction efficiency is high, and the transformation efficiency of reactant is high.
Embodiment
A kind of method of producing hydrogenchloride and ammonia of uniting is characterized in that: may further comprise the steps:
1) magnesium chloride is added in the reaction vessel, divide two to four batches to add liquid water or water vapour again, fully react, reaction system discharges hydrogen chloride gas; Wherein, the ratio of the total amount of the amount of magnesium chloride and the added water of each batch is (1～3): 1 (mol ratio), the temperature of reaction in this step are 220-410 ℃, and preferred temperature of reaction is 275-350 ℃, and the reaction times is 2-4h;
2) in the system of step 1), add 40-80 purpose ammonium chloride and water, fully react, reaction system discharges ammonia; The water that adds in this step and the mass ratio of ammonium chloride are (1～4): 1, and the mol ratio of used ammonium chloride was (1～3) during used magnesium chloride went on foot therewith in the step 1): 1, the temperature of reaction in this step is 105～136 ℃.
In the step 1), the reaction equation that relates to comprises:
Step 2) in, the reaction equation that relates to comprises:
Below in conjunction with specific embodiment the present invention is done further explanation:
Embodiment 1:
1) the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Be warming up to 275 ℃, feed water vapour at twice, the feeding amount of each water vapour is 10ml; The transformation efficiency of reaction 2h post chlorization magnesium reaches 80.5%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 40 purpose ammonium chloride 0.15mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 90%.
Embodiment 2:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Be warming up to 275 ℃; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml, and the transformation efficiency of reaction 4h post chlorization magnesium reaches 85%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 80 purpose ammonium chloride 0.15mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 91.5%.
Embodiment 3:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Be warming up to 350 ℃; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml, and the transformation efficiency of reaction 2h post chlorization magnesium reaches 88%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 40 purpose ammonium chloride 0.15mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 91.3%.
Embodiment 4:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml; Be warming up to 350 ℃, the transformation efficiency of reaction 2h post chlorization magnesium reaches 88%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 80 purpose ammonium chloride 0.15mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 93.5%.
Embodiment 5:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Be warming up to 350 ℃; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml, and the transformation efficiency of reaction 4h post chlorization magnesium reaches 90.5%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 80 purpose ammonium chloride 0.2mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 93.8%.
Embodiment 6:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml; Be warming up to 350 ℃, the transformation efficiency of reaction 4h post chlorization magnesium reaches 90.5%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 80 purpose ammonium chloride 0.3mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 88.5%.
Embodiment 7:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml; Be warming up to 350 ℃, the transformation efficiency of reaction 4h post chlorization magnesium reaches 90.5%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 80 purpose ammonium chloride 0.1mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 95%.
Embodiment 8:
1) at first the 0.2mol magnesium chloride is joined in the reaction kettle that has whisking appliance and condensation reflux unit; Divide and feed water vapour three times; The feeding amount of each water vapour is 10ml; Be warming up to 350 ℃, the transformation efficiency of reaction 4h post chlorization magnesium reaches 90.5%, and the hydrogen chloride gas water of generation absorbs and makes hydrochloric acid;
2) in reaction kettle, add the water of 80 purpose ammonium chloride 0.15mol and 15ml again, maintain the temperature at 115～130 ℃ of system ammonias, react 2h after, the transformation efficiency of ammonium chloride can reach 95%.
Claims (10)
1. unite the method for producing hydrogenchloride and ammonia for one kind, it is characterized in that: may further comprise the steps:
1) magnesium chloride and water are fully reacted, reaction system discharges hydrogen chloride gas;
2) adding ammonium chloride and water fully react in the system of step 1), and reaction system discharges ammonia.
2. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: in the step 1), the mol ratio of magnesium chloride and water is (1～3): 1.
3. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: the mol ratio of magnesium chloride and ammonium chloride is (1～3): 1.
4. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: step 2) in, the mass ratio of water and ammonium chloride is (1～4): 1.
5. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1, it is characterized in that: the reaction times of step 1) is 2-4h.
6. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1, it is characterized in that: the temperature of reaction of step 1) is 220-410 ℃.
7. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: step 2) reaction times be 1-2h.
8. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: step 2) temperature of reaction be 105～136 ℃.
9. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: in the step 1), water is liquid water or water vapour.
10. a kind of method of producing hydrogenchloride and ammonia of uniting according to claim 1 is characterized in that: step 2) in, the order number of ammonium chloride is the 40-80 order.
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| CN201210176046XA CN102718186A (en) | 2012-05-31 | 2012-05-31 | Hydrogen chloride and ammonia co-generation method |
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| CN201210176046XA CN102718186A (en) | 2012-05-31 | 2012-05-31 | Hydrogen chloride and ammonia co-generation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111924804A (en) * | 2019-05-13 | 2020-11-13 | 四川宝马河科技有限公司 | Novel method for preparing hydrochloric acid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087062A (en) * | 1992-11-20 | 1994-05-25 | 张智新 | Decomposition process for ammonium chloride |
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- 2012-05-31 CN CN201210176046XA patent/CN102718186A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087062A (en) * | 1992-11-20 | 1994-05-25 | 张智新 | Decomposition process for ammonium chloride |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111924804A (en) * | 2019-05-13 | 2020-11-13 | 四川宝马河科技有限公司 | Novel method for preparing hydrochloric acid |
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Application publication date: 20121010 |