CN1724369A - Process for producing synthetic ammonia or methanol by acetylene furnace tail gas - Google Patents
Process for producing synthetic ammonia or methanol by acetylene furnace tail gas Download PDFInfo
- Publication number
- CN1724369A CN1724369A CN 200510085638 CN200510085638A CN1724369A CN 1724369 A CN1724369 A CN 1724369A CN 200510085638 CN200510085638 CN 200510085638 CN 200510085638 A CN200510085638 A CN 200510085638A CN 1724369 A CN1724369 A CN 1724369A
- Authority
- CN
- China
- Prior art keywords
- methanol
- synthetic ammonia
- tail gas
- gas
- calcium carbide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Industrial Gases (AREA)
Abstract
A process for synthesizing ammonia or methanol from the tail gas of calcium carbide furnace includes such steps as washing said tail gas by water for removing dust, and synthesizing ammonia or methanol in the synthesizing system. Its advantages are low cost and environment protection.
Description
The technical field is as follows: the invention belongs to the field of inorganic chemical industry, and particularly relates to a process for producing synthetic ammonia or methanol by using calcium carbide furnace tail gas.
Background art: calcium carbide production is generally carried out in a calcium carbide furnace, high temperature is generated through electric arcs, and calcium oxide reacts with carbon to generate carbonized calcium (calcium carbide) and carbon monoxide. The tail gas of the closed calcium carbide furnace contains more than 50 percent of carbon monoxide, a large amount of dust, a small amount of nitrogen, hydrogen and the like.
The process for synthesizing ammonia is a well-established process, which generally uses charcoal (anthracite or coke), natural gas (methane) and oil (hydrocarbons) as raw materials, and produces carbon monoxide, hydrogen and nitrogen (from air) through coal gasification or cracking reaction, then converts carbon monoxide into hydrogen through conversion, and the hydrogen and nitrogen are synthesized in a synthesis tower to obtain synthetic ammonia.
Methanol synthesis is also a conventional process and is generally obtained by catalytic synthesis of carbon monoxide and hydrogen.
At present, the known tail gas of the calcium carbide furnace is generally subjected to dust removal treatment, some tail gas is directly discharged and some tail gas is used as fuel, and Chinese patent CN1048917 discloses a method for recovering furnace gas of a closed calcium carbide furnace, and the main contents of the method are waste heat recovery and dust removal. Chinese patent CN1461936 discloses a 'method for removing dust from furnace gas of calcium carbide furnace and utilizing the same', and the technical scheme only relates to the recovery of tail gas waste heat. Chinese patent CN2601124 discloses a 'closed calcium carbide furnace gas purification system', which mainly adopts a set of wet dust removal device to remove dust in tail gas, and how to dispose the dust-removed gas is not involved.
In fact, wet dedusting is also a well-established method, i.e. the dust in the tail gas is washed away by water.
The invention content is as follows: the invention aims to overcome the defects of the prior art, and provides a process for producing synthetic ammonia or methanol by using tail gas of a calcium carbide furnace as raw material gas.
The purpose of the invention is realized according to the following scheme:
the tail gas is led out from a closed calcium carbide furnace, washed with water and dedusted, and then enters a synthetic ammonia or methanol synthesis system to produce synthetic ammonia or methanol;
the gas after being washed and dedusted firstly enters a conversion section of synthetic ammonia to convert carbon monoxide into hydrogen, then a proper amount of nitrogen is added according to the hydrogen-nitrogen ratio of the synthetic ammonia, and then the gas enters a synthetic tower;
adding a proper amount of hydrogen into the gas after washing and dedusting according to the proportion of carbon monoxide and hydrogen synthesized by methanol, and feeding the gas into a methanol synthesis tower to synthesize methanol;
the gas after being washed and dedusted is converted into hydrogen suitable for methanol synthesis through partial carbon monoxide self-transformation according to the proportion of carbon monoxide and hydrogen synthesized by methanol, and then enters a methanol synthesis tower to synthesize methanol.
Compared with the prior art, the invention has the following characteristics:
1. the tail gas of the calcium carbide furnace is used as the raw material to produce the synthetic ammonia or the methanol, and a new raw material gas source for producing the products is developed.
2. The carbon monoxide in the tail gas of the calcium carbide furnace is fully utilized and converted into more valuable synthetic ammonia or methanol instead of being simply converted into a heat source.
3. The production cost of synthetic ammonia or methanol is reduced, the economic benefit of the product is improved, and meanwhile, the cost of the calcium carbide furnace tail gas pollution treatment can be indirectly reduced, which is beneficial to the establishment of the recycling economy circle in the field.
The specific implementation mode is as follows:
example 1: the closed calcium carbide furnace enters a wet dust removal system through a flue, dust in tail gas is washed away by water, the tail gas enters a conversion system for synthesizing ammonia after the components of the gas are measured, and the tail gas passes through a conversion reaction (A) ) Conversion of CO to H2Measuring the gas composition again, based on the measured H2And N2Amount according to the synthesis ammonia reaction ( )N2The demand of (2) is supplemented by N through an air separation system2And entering a synthesis tower for synthesis reaction to obtain synthetic ammonia.
Example 2: the closed calcium carbide furnace enters a wet dust removal system through a flue, dust in tail gas is washed away bywater, and the tail gas enters a methanol conversion system after the components of the gas are measured, and is subjected to conversion reaction (A) ) Partial conversion of CO to H2Measuring the gas composition again, based on the measured H2And CO amount according to the methanol synthesis reaction ( )H2The demand make-up section H2And entering a methanol synthesis tower for synthesis reaction to obtain methanol.
Example 3: the closed calcium carbide furnace enters a wet dust removal system through a flue, dust in tail gas is washed away by water, gas components are measured and then enter a methanol conversion system, reaction and measurement are carried out simultaneously, and the conversion reaction is controlled ( ) Conversion of CO to H2In an amount sufficient for the methanol synthesis reaction (c) )H2Then the obtained product enters a methanol synthesis tower for synthesis reaction to obtain methanol.
Claims (4)
1. The process for producing synthetic ammonia or methanol by using the tail gas of the calcium carbide furnace is characterized in that the tail gas is led out from the closed calcium carbide furnace, washed by water and dedusted, and then enters a synthetic ammonia or methanol synthesis system to produce synthetic ammonia or methanol.
2. The process for producing synthetic ammonia or methanol by using calcium carbide furnace tail gas as claimed in claim 1, wherein the gas after being washed with water anddedusted is firstly sent to a conversion section of synthetic ammonia to convert carbon monoxide into hydrogen, then is mixed with a proper amount of nitrogen according to the ratio of synthetic ammonia to hydrogen and nitrogen, and then is sent to a synthesis tower.
3. The process for producing synthetic ammonia or methanol by using calcium carbide furnace tail gas as claimed in claim 1, wherein a proper amount of hydrogen is supplemented to the gas after the dust removal by water washing according to the proportion of carbon monoxide and hydrogen synthesized by methanol, and the gas enters a methanol synthesis tower to synthesize methanol.
4. The process for producing synthetic ammonia or methanol by using calcium carbide furnace tail gas as claimed in claim 1, wherein the gas after being washed with water and dedusted is subjected to partial carbon monoxide self-conversion according to the proportion of carbon monoxide and hydrogen synthesized by methanol to generate hydrogen suitable for methanol synthesis, and then enters a methanol synthesis tower to synthesize methanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100856380A CN100400420C (en) | 2005-07-20 | 2005-07-20 | Process for producing synthetic ammonia or methanol by acetylene furnace tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100856380A CN100400420C (en) | 2005-07-20 | 2005-07-20 | Process for producing synthetic ammonia or methanol by acetylene furnace tail gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1724369A true CN1724369A (en) | 2006-01-25 |
| CN100400420C CN100400420C (en) | 2008-07-09 |
Family
ID=35924023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100856380A Expired - Fee Related CN100400420C (en) | 2005-07-20 | 2005-07-20 | Process for producing synthetic ammonia or methanol by acetylene furnace tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100400420C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427391C (en) * | 2006-09-30 | 2008-10-22 | 宁夏英力特电力集团股份有限公司 | Tail gas treatment and reutilization for calcium carbide stove |
| CN102050699A (en) * | 2010-11-04 | 2011-05-11 | 茌平信祥化工有限公司 | Process for co-producing methanol and ammonia by utilizing calcium carbide tail gas |
| CN102430316A (en) * | 2011-11-17 | 2012-05-02 | 四川天一科技股份有限公司 | Method of using methanol exhausted gas as regenerated gas and cold blowing air for temperature swing adsorption |
| CN103289768A (en) * | 2013-06-05 | 2013-09-11 | 太原理工大学 | Method for synthesizing natural gas from calcium carbide tail gas and coke oven gas |
| CN107619055A (en) * | 2016-07-17 | 2018-01-23 | 卓粤 | Tail gas recovery system of calcium carbide furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047798C (en) * | 1996-07-10 | 1999-12-29 | 山东鲁南化学工业集团公司 | Method for producing spongy iron and coproducing synthetic ammonia by reducing gas |
-
2005
- 2005-07-20 CN CNB2005100856380A patent/CN100400420C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427391C (en) * | 2006-09-30 | 2008-10-22 | 宁夏英力特电力集团股份有限公司 | Tail gas treatment and reutilization for calcium carbide stove |
| CN102050699A (en) * | 2010-11-04 | 2011-05-11 | 茌平信祥化工有限公司 | Process for co-producing methanol and ammonia by utilizing calcium carbide tail gas |
| CN102050699B (en) * | 2010-11-04 | 2013-07-24 | 茌平信祥化工有限公司 | Process for co-producing methanol and ammonia by utilizing calcium carbide tail gas |
| CN102430316A (en) * | 2011-11-17 | 2012-05-02 | 四川天一科技股份有限公司 | Method of using methanol exhausted gas as regenerated gas and cold blowing air for temperature swing adsorption |
| CN102430316B (en) * | 2011-11-17 | 2014-06-25 | 四川天一科技股份有限公司 | Method of using methanol exhausted gas as regenerated gas and cold blowing air for temperature swing adsorption |
| CN103289768A (en) * | 2013-06-05 | 2013-09-11 | 太原理工大学 | Method for synthesizing natural gas from calcium carbide tail gas and coke oven gas |
| CN103289768B (en) * | 2013-06-05 | 2014-07-02 | 太原理工大学 | Method for synthesizing natural gas from calcium carbide tail gas and coke oven gas |
| CN107619055A (en) * | 2016-07-17 | 2018-01-23 | 卓粤 | Tail gas recovery system of calcium carbide furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100400420C (en) | 2008-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101538483B (en) | Poly-generation technique for using coal gas and coke oven gas as raw materials | |
| CN100436393C (en) | Method for concurrently producing dimethyl ether, liquefied natural gas and urea | |
| CN103160294B (en) | Omnibearing coproduction system and method by utilizing coal grading | |
| CN104531186B (en) | Method for producing tar and hydrocarbon fuel products with coal | |
| AU2014361206B2 (en) | Method for generating synthesis gas in conjunction with a smelting works | |
| CN103242134A (en) | Pyrolysis gasification and purification method of household garbage | |
| CN1944363A (en) | Method for simultaneously producing methanol, urea and artificial gas | |
| CN1974732A (en) | Process of preparing synthesized gas with gasified gas and pyrolyzed gas | |
| CN102448874A (en) | Syngas production method | |
| CN104803819B (en) | A kind of method and system utilizing fine coal preparing ethylene | |
| CN102642810B (en) | Combined process for preparing Fischer-Tropsch synthetic oil raw material gas by utilizing coke-oven gas | |
| CN101284761A (en) | Process for combined preparing methylic alcohol, natural gas for automobile and synthesis ammonia form industrial end gas rich in carbon and hydrogen | |
| CN110049944B (en) | Method for producing pure hydrogen from synthesis gas originating from waste gasification and related plant | |
| CN103407963A (en) | Coke oven gas hydrogen generation process | |
| CN103694074A (en) | System and process for preparing olefin by taking coal and coke-oven gas as raw materials | |
| CN105883851B (en) | A kind of Novel gasification and pyrolysis coupling coal gas multi-production process | |
| CN1724369A (en) | Process for producing synthetic ammonia or methanol by acetylene furnace tail gas | |
| CN101239702A (en) | High temperature coke oven crude gas hydrogen generating system device and technique | |
| WO2012174968A1 (en) | Novel process for purifying and refining crude synthetic gas based on molten salt properties | |
| CN1156754A (en) | Method for continuously gasifying coal (coke) and purifying synthesized gas | |
| CN103484181B (en) | System and process for manufacturing substitute natural gas by utilizing coal | |
| CN1644661A (en) | Oven gas generation of plasma gasified coke oven | |
| CN111171848B (en) | System and method for producing high-purity steel and hydrogen | |
| CN101020854A (en) | Coupling method between making hydrogen and desulfurizing petroleum coking gas | |
| CN114074919A (en) | Method for producing hydrogen by converting municipal refuse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20140720 |
|
| EXPY | Termination of patent right or utility model |