CN202390347U - Recycling system for methanol system separation water - Google Patents
Recycling system for methanol system separation water Download PDFInfo
- Publication number
- CN202390347U CN202390347U CN2011205224797U CN201120522479U CN202390347U CN 202390347 U CN202390347 U CN 202390347U CN 2011205224797 U CN2011205224797 U CN 2011205224797U CN 201120522479 U CN201120522479 U CN 201120522479U CN 202390347 U CN202390347 U CN 202390347U
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- water
- methyl alcohol
- methanol
- tower
- stripping tower
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a recycling system for methanol system separation water, which comprises a conversion process water cooler of a methanol system and a rectifying process atmospheric tower, wherein a stripping tower is arranged in the methanol system, and separation water of the conversion process water cooler and methanol raffinate of the rectifying process atmospheric tower enter the stripping tower. According to the system, wastewater discharge is reduced, supplement of circulating water is saved, the quality of the circulating water is improved, corrosion of metal pipelines and equipment is reduced, and the problems of difficult wastewater treatment, low utilization efficiency of water resource, equipment corrosion and the like in the industry for producing methanol with coke oven gas are effectively solved.
Description
Technical field
The utility model belongs to Coal Chemical Industry energy-conserving and environment-protective technical field, and especially a kind of methyl alcohol system separates the recycling system of water.
Background technology
Methyl alcohol is a kind of important basic Organic Chemicals, and it has a wide range of applications in Chemicals.Methyl alcohol consumption market, the world today enlarges rapidly.The good macroeconomic environment of China and the rapid growth rate of downstream demand made the methyl alcohol industry of China continue keeping stable growing trend fast in recent years.Though the development of China methyl alcohol industry rapidly, also has many problems, for example production efficiency is low, expense is high, of poor benefits etc.In the coming years, the world will have more methyl alcohol production capacity to go into operation, and the methyl alcohol industry will face intense market competition when the time comes.It is unbeaten that domestic methanol production enterprise wants in competition, to keep, and just must see clearly the internal and external environment and self strengths and weaknesses of competition, formulates rational development strategy, solves FAQs in the methanol production, minimizes cost raising input-output rate.
In coke-oven gas system methanol industry, the methyl alcohol system mainly divides the dried up two kinds of sources that have, and a kind of is that branch behind the conversion procedure water cooler is dried up; This water has generally directly been incorporated circulating water system into, but it contains soluble inflammable gas, compositions such as organism, carbonic acid gas; Circulating water quality is done a lot of damage, be easy to make circulating water PH value to reduce, carbon acid ion concentration is high; Destroy the recirculated water acid, the heat exchanging device causes corrosion.Another kind of branch is dried up to be the methyl alcohol raffinate (bottom product) that the rectification working process atmospheric tower is discharged, and staple is water and a spot of methyl alcohol, and this part water is delivered directly to the biochemical treatment operation; Crossing biochemical treatment effluxes; Increase biochemical load, also cause the waste of water, methyl alcohol wherein also can't reclaim.
Wherein ammonia nitrogen is the most serious to the destruction of water quality, and major cause is that ammonia nitrogen generates nitrite anions and hydrogen ion under the effect of nitrite bacteria, and the acquisition significant amount of energy is used for breeding; The hydrogen ion that produces causes pH of system and basicity to reduce rapidly, the accelerating system corrosion of metal; The nitrite anions that produces generates nitrate radical under the effect of nitrobacteria, and obtains more energy and be used for breeding; The a large amount of oxidizing bactericides of nitrosation reaction consumption reduce sterilizing rate; A large amount of bacterial reproductions can cause the system fault, when bacterial count 104/when ml was above, the foundry loam fault took place easily; The nitrate radical that nitration reaction produces becomes the nutrition source of algae again, and plant mainly absorbs the nitrogen in the acid group, causes algae to grow; Ammonia nitrogen and copper reaction generate water-soluble ammoniacal copper complex ion, quicken the corrosion of copper material.
The utility model content
The technical problem that the utility model will solve provides recycling system that a kind of methyl alcohol system separates water to solve the wastewater treatment difficulty that exists in the coke-oven gas system methanol industry, and water resource utilization efficiency is not high, problems such as corrosion of equipment.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is: it comprises the conversion procedure water cooler and the rectification working process atmospheric tower of methyl alcohol system, is provided with stripping tower in the described methyl alcohol system; The branch of conversion procedure water cooler is dried up and the methyl alcohol raffinate of rectification working process atmospheric tower gets into stripping tower.
The cat head component of the said stripping tower of the utility model adds the preceding coke-oven gas of preheating oven of methyl alcohol system.
The dried up circulating water system of incorporating the methyl alcohol system into of branch after the said stripping Tata of the utility model still improves.
The described stripping tower of the utility model adopts the MP steam heating.
Adopt the beneficial effect that technique scheme produced to be: the utility model can reduce discharge of wastewater, the moisturizing of economized cycle water; Improve circulating water quality, reduce metallic conduit, equipment corrosion.It is difficult that the utility model has effectively solved the wastewater treatment that exists in the coke-oven gas system methanol industry, and water resource utilization efficiency is not high, problems such as corrosion of equipment.
The methyl alcohol raffinate that the branch of the utility model after with the conversion procedure water cooler is dried up and the rectification working process atmospheric tower is discharged merges the back and gets into stripping tower; The feeding MP steam is heated; Organic impurity in the water is taken out of; With coke-oven gas before the cat head component adding preheating oven, the dried up water quality of branch after the tower still improves is incorporated recirculated water into, recycle.So not only reclaim organic composition and methyl alcohol in two strands of water, also improved the water quality of recirculated water.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the system architecture synoptic diagram of the utility model.
Embodiment
The methanol synthesizing process flow process is: raw coke oven gas and water vapor and oxygen and water vapour get into conversion procedure, with fuel gas are to transform energy is provided, and the synthetic gas after the conversion gets into the refrigerated separation device, simultaneously from this conversion procedure output stack gas.The refrigerated separation device is exported synthetic gas after through circulating water treatment.Rectification working process produces refined methanol and waste liquid after with thick methanol treatment.
Recycling system addition in the methyl alcohol system that this methyl alcohol system separates water has stripping tower, and conversion procedure water cooler and rectification working process atmospheric tower are communicated with stripping tower; Described stripping tower adopts the MP steam heating.The branch of conversion procedure water cooler is dried up and the methyl alcohol raffinate of rectification working process atmospheric tower is delivered to stripping tower; Branch dried up (tower still component) and the cat head component that contains organic components after that stripping tower will divide will be dried up, methyl alcohol raffinate and MP steam improve after handling; The dried up recirculated water operation of incorporating the methyl alcohol system into of branch after wherein improving, cat head component and coke-oven gas get into conversion procedure.
Claims (2)
1. a methyl alcohol system separates the recycling system of water, and conversion procedure water cooler and rectification working process atmospheric tower that it comprises the methyl alcohol system is characterized in that: be provided with stripping tower in the described methyl alcohol system; Conversion procedure water cooler and rectification working process atmospheric tower are communicated with stripping tower, and the branch of conversion procedure water cooler is dried up and the methyl alcohol raffinate of rectification working process atmospheric tower gets into stripping tower.
2. methyl alcohol according to claim 1 system separates the recycling system of water, and it is characterized in that: described stripping tower links to each other with MP steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205224797U CN202390347U (en) | 2011-12-14 | 2011-12-14 | Recycling system for methanol system separation water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205224797U CN202390347U (en) | 2011-12-14 | 2011-12-14 | Recycling system for methanol system separation water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202390347U true CN202390347U (en) | 2012-08-22 |
Family
ID=46665285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205224797U Expired - Lifetime CN202390347U (en) | 2011-12-14 | 2011-12-14 | Recycling system for methanol system separation water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202390347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226572A (en) * | 2017-06-26 | 2017-10-03 | 内蒙古睿达鑫科技有限责任公司 | Mercury-containing waste water advanced treating zero-emission system and method |
-
2011
- 2011-12-14 CN CN2011205224797U patent/CN202390347U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226572A (en) * | 2017-06-26 | 2017-10-03 | 内蒙古睿达鑫科技有限责任公司 | Mercury-containing waste water advanced treating zero-emission system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |