CN210419228U - Conversion system for preparing ammonia by gasifying coal water slurry to prepare hydrogen - Google Patents
Conversion system for preparing ammonia by gasifying coal water slurry to prepare hydrogen Download PDFInfo
- Publication number
- CN210419228U CN210419228U CN201921429794.8U CN201921429794U CN210419228U CN 210419228 U CN210419228 U CN 210419228U CN 201921429794 U CN201921429794 U CN 201921429794U CN 210419228 U CN210419228 U CN 210419228U
- Authority
- CN
- China
- Prior art keywords
- shift converter
- shift
- inlet
- outlet
- shell
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Industrial Gases (AREA)
Abstract
The utility model belongs to the technical field of coal chemical industry, a transform system of coal slurry gasification hydrogen manufacturing ammonia is related to, its characterized in that: comprises a separator, a first shift converter, a waste boiler, a second shift converter and a steam drum; the top outlet of the separator is connected with the shell-side inlet of the first shift converter; the tube side inlet of the first shift converter is connected with the shell side outlet of the waste boiler; the shell pass outlet of the first shift converter is respectively connected with the tube pass inlet of the waste boiler and the shell pass inlet of the second shift converter; the shell side inlet of the waste boiler is connected with a boiler water pipe; the tube side outlet of the waste boiler is connected with the shell side inlet of the second shift converter; the tube pass inlet of the second shift converter is connected with the tube pass outlet of the steam drum; the tube pass outlet of the second shift converter is connected with the tube pass inlet of the steam drum; the shell side inlet of the drum is connected to boiler water tubes from the system. The utility model discloses simple process, input cost are few, and catalyst activity is good, longe-lived, and equipment structure is reliable.
Description
Technical Field
The utility model belongs to the technical field of coal chemical industry, a transform system for producing hydrogen and ammonia by coal water slurry gasification is related to.
Background
Coal gasification is an important component of clean coal technology, converts cheap coal into clean coal gas, and can be used for producing chemical products such as synthetic ammonia and the like. The coal water slurry gasification technology is a technology which has long application time in China and can be further developed through research and development work, and has the characteristics of simple gasifier structure, wide coal type adaptation, easy control and safety of coal water slurry feeding, large single-furnace production capacity and the like. When the coal water slurry is gasified to produce ammonia gas, the excessive CO in the raw gas is converted into H2And the raw gas is used as the raw material gas and then enters an ammonia synthesis process to synthesize ammonia gas, so that the raw gas in the coal water slurry gasification needs to be transformed.
The general shift process mainly comprises the following steps according to different gasification processes: the normal pressure gas making is matched with the conversion, the step-by-step intermediate cooling and the humidification are carried out, and the stable operation of the conversion is controlled. In the process of preparing ammonia by gasifying coal water slurry, when the steam gas of raw coal gas is high and the gas pressure is high, the existing conversion process has the following problems: the conversion process is complex, the conversion furnace is mainly subjected to axial adiabatic or axial radial adiabatic conversion, the high-position heat utilization of the conversion furnace is poor, the conversion efficiency is not high, the service cycle of the catalyst is 2-4 years, and the service life is short.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems of complex transformation process, low transformation efficiency and short service life of the catalyst in the prior art, the utility model provides a transformation system for producing hydrogen and ammonia by gasifying coal water slurry, which has the advantages of simple process, low investment cost, good catalyst activity, long service life and reliable equipment structure.
In order to realize the purpose, the utility model discloses a technical scheme is:
a conversion system for preparing ammonia by gasifying coal water slurry, which is characterized in that: the conversion system for producing hydrogen and ammonia by gasifying coal water slurry comprises a separator, a first conversion furnace, a waste boiler, a second conversion furnace and a steam drum;
the separator is provided with an inlet, a top outlet and a bottom outlet; the first shift converter, the waste boiler, the second shift converter and the steam drum are all provided with a tube pass inlet, a tube pass outlet, a shell pass inlet and a shell pass outlet;
the top outlet of the separator is connected with the shell-side inlet of the first shift converter; the tube side inlet of the first conversion furnace is connected with the shell side outlet of the waste boiler; the shell pass outlet of the first shift converter is respectively connected with the tube pass inlet of the waste boiler and the shell pass inlet of the second shift converter; the shell side inlet of the waste boiler is connected with a boiler water pipe; the tube side outlet of the waste boiler is connected with the shell side inlet of the second shift converter; the tube side inlet of the second shift converter is connected with the tube side outlet of the steam drum; the tube side outlet of the second shift converter is connected with the tube side inlet of the steam drum; and a shell side inlet of the steam drum is connected with a boiler water pipe.
Furthermore, the conversion system for preparing the ammonia by gasifying the coal water slurry and preparing the hydrogen also comprises a heat exchanger; the top outlet of the separator is connected with the shell pass inlet of the first shift converter after passing through the heat exchanger; and the shell pass outlet of the first conversion furnace is connected with the shell pass inlet of the second conversion furnace after passing through the heat exchanger.
Furthermore, the first shift converter and the second shift converter are both spiral tube shift converters.
Further, catalyst beds are arranged in the first conversion furnace and the second conversion furnace.
Further limiting, catalyst beds are arranged in the shell side of the first shift converter and the shell side of the second shift converter.
Further limiting, the catalyst bed layer is divided into an upper layer and a lower layer which are arranged in the shell side of the first shift converter and the shell side of the second shift converter.
Further defined, the catalyst bed is a sulfur tolerant shift catalyst bed.
The utility model has the advantages that:
1. the utility model discloses in, the coal slurry gasification's coarse coal gas carries out the secondary transform back through first transform stove and second transform stove, and the process gas can get into transform back-end system and carry out subsequent hydrogen manufacturing ammonia. The utility model discloses a transform system, flow easy operation, the input fund is few, and is with low costs, and transform effectually.
2. In the utility model, the tube pass inlet of the first shift converter is connected with the waste boiler shell pass outlet; and a tube pass inlet of the second shift converter is connected with a tube pass outlet of the steam drum, and a tube pass outlet of the second shift converter is connected with a tube pass inlet of the steam drum. The heat generated by the whole conversion system is respectively removed from the first conversion furnace and the second conversion furnace through the waste boiler and the steam drum, so that the first conversion furnace and the second conversion furnace are ensured to be in a low-temperature state, the operating temperature of a catalyst bed layer is reduced, the conversion reaction is accelerated, and the service life of the catalyst is prolonged.
3. The utility model discloses first shift converter and second shift converter all adopt spiral tubular shift converter, and the shift converter is the axial formula, and the structure is reliable.
4. The utility model discloses a catalyst bed be sulfur-tolerant shift catalyst bed, and the catalyst bed has fine sulfur toxicity resistance ability, is applicable to the CO transform of raw coal gas under the high vapour-gas ratio, and transform efficiently.
Drawings
FIG. 1 is a conversion system for producing ammonia by gasifying coal water slurry;
wherein:
1-a separator; 2-a heat exchanger; 3, a first shift converter; 4-waste pot; 5, a second conversion furnace; 6-steam pocket.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Example 1
Referring to fig. 1, the utility model provides a coal slurry gasification hydrogen manufacturing ammonia conversion system includes separator, heat exchanger, first shift converter, waste boiler, second shift converter and steam pocket.
The inlet of the separator 1 is connected with the gas phase of the coarse coal from the gasification of the coal water slurry and the water gas separation is carried out in the separator 1; an outlet at the bottom of the separator 1 is sent to a system waste liquid pipe network, and an outlet at the top of the separator 1 is connected with a shell pass inlet at the top of the first shift converter 3 through a heat exchanger 2; a tube pass inlet at the top of the first shift converter 3 is connected with a shell pass outlet of the waste boiler 4; the shell pass outlet at the bottom of the first shift converter 3 comprises two branches, one branch is that the shell pass outlet at the bottom of the first shift converter 3 is directly connected with the tube pass inlet of the waste boiler 4, and the other branch is that the shell pass outlet at the bottom of the first shift converter 3 is connected with the shell pass inlet at the top of the second shift converter 5 through the heat exchanger 2; a pipe pass outlet at the bottom of the first shift converter 3 is communicated with a system steam pipe network, and the steam discharged is superheated steam of 2.5 MPa; the shell side inlet of the waste boiler 4 is connected with a boiler water pipe from the system; a tube side outlet of the waste boiler 4 is connected with a shell side inlet at the top of the second shift converter 5; a tube side inlet at the top of the second shift converter 5 is connected with a tube side outlet of the steam drum 6; a pipe pass outlet at the bottom of the second shift converter 5 is connected with a pipe pass inlet of the steam drum 6; a shell pass outlet at the bottom of the second shift converter 5 is communicated with a post-shift system for hydrogen production or ammonia production; the shell side inlet of the steam drum 6 is connected with a boiler water pipeline from the system; and a shell pass outlet of the steam drum 6 is connected to a system waste liquid pipe network.
The utility model provides an among the transform system, the gasified coarse coal gas of coal slurry gets into the system to take place shift reaction CO + H in first shift converter 3 and second shift converter 52O＝CO2+H2+ Q, because the shift reaction is an exothermic reaction, a large amount of heat is generated, and if the heat cannot be removed from the two shift furnaces in time, the temperature of the catalyst bed in the shell pass of the two shift furnaces will rise, affecting the activity of the catalyst and its catalyst life. During specific implementation, a tube pass inlet at the top of the first shift converter 3 is connected with a shell pass outlet of the waste boiler 4, 2.5MPa superheated steam from the tube pass outlet at the bottom of the first shift converter 3 is delivered to a steam pipe network, a shell pass inlet of the waste boiler 4 is connected with a boiler water pipe, cold water is added into the tube pass of the first shift converter 3 through the waste boiler 4 for heat transfer, and the 2.5MPa superheated steam from the tube pass outlet at the bottom of the first shift converter 3 is finally delivered to the steam pipe network for heat reutilization; and the tube side inlet at the top of the second shift converter 5 and the tube side outlet of the steam drum 6And the tube side outlet at the bottom of the second shift converter 5 is connected with the tube side inlet of the steam drum 6, the shell side inlet of the steam drum 6 is connected with boiler water from the system, the shell side outlet of the steam drum 6 is connected to a system pipe network, and heat generated by the shift reaction in the second shift converter 5 is transferred through the steam drum 6. Therefore, the service life of the catalyst is prolonged within the operation range of the temperature catalyst of the catalyst bed layers in the first shift converter 3 and the second shift converter 5, the activity of the catalyst is not influenced, and the efficiency of the shift reaction is improved.
Example 2
The utility model discloses a first transform stove 3 and second transform stove 5, its structure is spiral pipe heat transfer formula transform stove, and this kind of transform stove is axial formula reaction tower, and the response equipment structure is simple relatively, reliable.
Catalyst beds are arranged in the upper layer and the lower layer in the shell pass of the first shift converter 3 and the shell pass of the second shift converter 5, the catalyst beds are sulfur-resistant shift catalyst beds, in the implementation process, catalysts are filled in the catalyst beds, the catalysts can be common B302Q, B303Q or EB-6 catalysts in the market, and the catalysts are spherical particles. The operation temperature of the catalyst is low, and is generally 180-330 ℃; the carbon monoxide is lower after transformation, and the sulfur toxicity resistance of the catalyst is stronger.
Examples 3 to 5 specific modifications of the present invention
Example 3
The raw coal gas gasified by the coal water slurry has the steam-gas ratio of 1.0 and the pressure of 4.2MPa, and the content of CO in the raw coal gas is 45 percent and the content of H2 is 38 percent.
By adopting the conversion system for preparing the ammonia by gasifying the coal water slurry, the impurities are discharged to a system pipe network from the bottom of the separator after the crude coal gas is separated by the water gas of the separator; the separated crude gas enters the first conversion furnace from a shell pass inlet at the bottom of the first conversion furnace after heat exchange through a heat exchanger to carry out primary conversion reaction, under the action of a B302Q catalyst, the temperature of the shift reaction is 185 ℃, after the process gas after primary shift is discharged from the shell side at the bottom of the first shift furnace, one part of the waste heat is exchanged with heat, the other part of the waste heat is exchanged with heat by a heat exchanger, two gas flows enter a shell pass inlet at the top of a second shift converter and carry out secondary shift reaction, the second shift converter is arranged in the second shift converter, under the action of B302Q catalyst, the temperature of shift reaction is controlled at 170 ℃, the CO content in the process gas after secondary shift is 0.35 percent, therefore, the secondary conversion process gas discharged from the shell pass outlet at the bottom of the second conversion furnace enters a subsequent conversion system after being cooled, washed and separated, and the secondary conversion process gas discharged from the conversion system is used as raw material gas for hydrogen production and enters a hydrogen production system.
Example 4
The difference from example 3 is: the gas-gas ratio of the raw gas is 1.2, the pressure is 6.2MPa, the content of CO in the raw gas is 40 percent, the content of H2 is 40 percent, when the conversion is carried out by adopting the utility model, the catalysts filled in the first conversion furnace and the second conversion furnace are B303Q, the operating temperature of the first conversion furnace is controlled at 265 ℃, the operating temperature of the second conversion furnace is controlled at 280 ℃, and the content of CO in the process gas after the secondary conversion is 0.15 percent; and the secondary conversion process gas discharged from a shell pass outlet at the bottom of the second conversion furnace is used as a raw material gas for hydrogen production and enters a subsequent hydrogen production system. The whole system has high conversion efficiency, simple operation, good catalyst activity and prolonged service life.
Example 5
The difference from example 3 is: the gas-gas ratio of the raw gas is 1.4, the pressure is 5.5MPa, the CO content in the raw gas is 35 percent, and the H2 content is 44 percent; when the utility model is adopted for conversion, the catalysts loaded in the first conversion furnace and the second conversion furnace are EB-6, the operating temperature of the first conversion furnace is controlled at 230 ℃, the operating temperature of the second conversion furnace is controlled at 230 ℃, and the content of CO in the process gas after secondary conversion is 0.2%; and the secondary conversion process gas which is discharged from a shell pass outlet at the bottom of the second conversion furnace is used as raw material gas to enter a subsequent ammonia preparation system and is used for synthesizing ammonia with nitrogen.
Claims (7)
1. A conversion system for preparing ammonia by gasifying coal water slurry, which is characterized in that: the conversion system for producing hydrogen and ammonia by gasifying coal water slurry comprises a separator (1), a first conversion furnace (3), a waste boiler (4), a second conversion furnace (5) and a steam drum (6);
the separator (1) is provided with an inlet, a top outlet and a bottom outlet; the first shift converter (3), the waste boiler (4), the second shift converter (5) and the steam drum (6) are respectively provided with a tube pass inlet, a tube pass outlet, a shell pass inlet and a shell pass outlet;
the top outlet of the separator (1) is connected with the shell-side inlet of the first shift converter (3); the tube side inlet of the first shift converter (3) is connected with the shell side outlet of the waste boiler (4); the shell pass outlet of the first shift converter (3) is respectively connected with the tube pass inlet of the waste boiler (4) and the shell pass inlet of the second shift converter (5); the shell side inlet of the waste boiler (4) is connected with a boiler water pipe; the tube side outlet of the waste boiler (4) is connected with the shell side inlet of the second shift converter (5); the tube side inlet of the second shift converter (5) is connected with the tube side outlet of the steam drum (6); the tube side outlet of the second shift converter (5) is connected with the tube side inlet of the steam drum (6); and a shell side inlet of the steam drum (6) is connected with a boiler water pipe.
2. The shift system for producing ammonia by gasifying water-coal-slurry according to claim 1, characterized in that: the conversion system for preparing ammonia by gasifying and preparing hydrogen from coal water slurry also comprises a heat exchanger (2); the top outlet of the separator (1) is connected with the shell pass inlet of the first shift converter (3) after passing through the heat exchanger (2); and a shell pass outlet of the first shift converter (3) is connected with a shell pass inlet of the second shift converter (5) after passing through the heat exchanger (2).
3. The shift system for producing ammonia by gasifying water-coal-slurry according to claim 1 or 2, characterized in that: the first shift converter (3) and the second shift converter (5) are both spiral tube type shift converters.
4. The shift system for producing ammonia by gasifying water-coal-slurry according to claim 3, characterized in that: catalyst bed layers are arranged in the first shift converter (3) and the second shift converter (5).
5. The shift system for producing ammonia by gasifying water-coal-slurry according to claim 4, characterized in that: catalyst beds are arranged in the shell side of the first shift converter (3) and the shell side of the second shift converter (5).
6. The shift system for producing ammonia by gasifying water-coal-slurry according to claim 4, characterized in that: the catalyst bed layer is divided into an upper layer and a lower layer which are arranged in the shell side of the first shift converter (3) and the shell side of the second shift converter (5).
7. The shift system for producing ammonia by gasifying water-coal-slurry according to claim 6, characterized in that: the catalyst bed layer is a sulfur-tolerant shift catalyst bed layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429794.8U CN210419228U (en) | 2019-08-29 | 2019-08-29 | Conversion system for preparing ammonia by gasifying coal water slurry to prepare hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429794.8U CN210419228U (en) | 2019-08-29 | 2019-08-29 | Conversion system for preparing ammonia by gasifying coal water slurry to prepare hydrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210419228U true CN210419228U (en) | 2020-04-28 |
Family
ID=70365250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921429794.8U Active CN210419228U (en) | 2019-08-29 | 2019-08-29 | Conversion system for preparing ammonia by gasifying coal water slurry to prepare hydrogen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210419228U (en) |
-
2019
- 2019-08-29 CN CN201921429794.8U patent/CN210419228U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101704513B (en) | Shunting-type isothermal sulfur-tolerant conversion process and equipment thereof | |
| CN101817716B (en) | Method and device for catalyzing methanation of synthesis gas | |
| EP2213367A1 (en) | A composite reaction apparatus and the chemical production method using the same | |
| CN109179320B (en) | Natural gas on-site hydrogen production device and method | |
| CN203096014U (en) | Device for producing natural gas from factory waste gas | |
| KR20200000749A (en) | Integrated CO-Shift Reactor with Multi-Stage Temperature Control Device | |
| CN113461027B (en) | Low-pressure synthetic ammonia tower and renewable energy source low-pressure synthetic ammonia system | |
| CN105733717B (en) | A kind of natural gas from coal conversion process system | |
| CN111646430A (en) | Carbon monoxide conversion system and method for device for preparing methanol by gasifying coal water slurry | |
| CN104445064A (en) | Syngas CO combined conversion method and apparatus | |
| CN211169844U (en) | Full shift system for coal gasification | |
| CN207227004U (en) | A kind of combustion gas hydrogen manufacturing integrated reaction device suitable for small Miniature domestic | |
| CN210419228U (en) | Conversion system for preparing ammonia by gasifying coal water slurry to prepare hydrogen | |
| CN210419229U (en) | Conversion system for preparing methanol by gasifying coal water slurry | |
| CN101745350B (en) | Device for by-product steam catalytic reaction | |
| CN109294627B (en) | Isothermal conversion device and synthesis gas complete conversion reaction system comprising same | |
| CN111718760B (en) | Sulfur-tolerant methanation system and method for coal-based natural gas | |
| CN107460013B (en) | Process for preparing natural gas through methanation of synthesis gas fluidized bed based on interstage dehydration | |
| CN210419230U (en) | Conversion system for preparing methanol by coal gasification | |
| CN201436064U (en) | A catalysis reaction device with steam byproduct | |
| CN210528461U (en) | Jinhua furnace/space furnace coal gasification hydrogen production and ammonia production conversion system | |
| CN109810739B (en) | Sulfur-tolerant methane synthesis process and device | |
| CN201358217Y (en) | Reactor for producing dimethyl ether from methanol through vapor-phase dehydration under pressurization | |
| CN103911196A (en) | Method and apparatus for utilizing plant waste gas to prepare natural gas | |
| CN203568842U (en) | Combined conversion device for synthesized gas CO |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |