CN209383400U - A kind of ammonia synthesis system of flushable cool exchanger - Google Patents
A kind of ammonia synthesis system of flushable cool exchanger Download PDFInfo
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- CN209383400U CN209383400U CN201822174705.1U CN201822174705U CN209383400U CN 209383400 U CN209383400 U CN 209383400U CN 201822174705 U CN201822174705 U CN 201822174705U CN 209383400 U CN209383400 U CN 209383400U
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- ammonia
- cooler
- cool exchanger
- shell
- synthesis
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Abstract
The utility model discloses a kind of ammonia synthesis systems of flushable cool exchanger, including soft water heater, synthesize water cooler A, synthesize water cooler B, cool exchanger, level-one ammonia cooler, second level ammonia cooler, ammonia separator, synthesize circulator, the cool exchanger is equipped with hot gas inlet, heat outlet, cold air inlet, cold air outlet, the soft water heater, synthesize water cooler A, synthesis water cooler B is sequentially connected, and synthesis water cooler B is connect with hot gas inlet, the heat outlet is sequentially connected level-one ammonia cooler, second level ammonia cooler, ammonia separator, and ammonia separator is connect with cold air inlet.The utility model puts ammonia valve by closing ammonia point, liquefied ammonia is trapped in ammonia separator, and liquefied ammonia is brought into cold exchange using air-flow, by the carbon ammonia crystallization in heat transfer tube wall, it is dissolved in liquefied ammonia, then liquefied ammonia is drained, make unobstructed inside cool exchanger, reduce the pressure difference that cool exchanger two goes out into two, it is ensured that the safe operation of cool exchanger long period.
Description
Technical field
The utility model belongs to ammonia synthesis unit field more particularly to a kind of ammonia synthesis system of flushable cool exchanger.
Background technique
Ammonia enterprise domestic at present frequently with " two into two go out " synthesis ammonia system, such as application No. is
The Chinese patent of 201510820309.X discloses a kind of method and apparatus for synthesizing ammonia synthesis system Optimal improvements, which changes
Into device, including synthetic tower, waste heat boiler, heat exchanger, soft water heater, water cooler, cool exchanger, ammonia separator, ammonia
The capital equipments such as condenser and recycle compressor, but use the set equipment in the actual production process, cool exchanger operation one
After the section time, changing cold efficiency will decline, and two into two, which go out pressure difference, is gradually increased, the reason is that containing about 6ppm in unstripped gas
CO2 reacts in cool exchanger with gas ammonia, generates the crystallization of carbon ammonia, is attached on tube wall, keeps cool exchanger top cold-exchange tube side logical
Road reduces, and two into two, which go out pressure difference, is gradually increased, and increases the power consumption of compressor, while reducing and changing cold efficiency, therefore every 2~3
The moon needs to shut down, and cleans to cool exchanger, influences production efficiency.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of ammonia synthesis system of flushable cool exchanger, it can
Decline is easy to solve the problems, such as that prior art cool exchanger changes cold efficiency.
The utility model is achieved by the following technical programs.
A kind of ammonia synthesis system of flushable cool exchanger provided by the utility model, including soft water heater, synthetic water
Cooler A, synthesis water cooler B, cool exchanger, level-one ammonia cooler, second level ammonia cooler, ammonia separator, synthesis circulator, the cold friendship
Parallel operation is equipped with hot gas inlet, heat outlet, cold air inlet, cold air outlet, the soft water heater, synthesis water cooler A, synthesis
Water cooler B is sequentially connected, and is synthesized water cooler B and connect with hot gas inlet, and the heat outlet is sequentially connected level-one ammonia cooler, two
Grade ammonia cooler, ammonia separator, and ammonia separator is connect with cold air inlet, the cold air outlet is connect with synthesis circulator.
The cool exchanger includes shell, collector box, the top and the bottom of the collector box installation inside the housing, collector box it
Between by the connection of more heat exchanger tubes, hot gas inlet is connect with shell upper, and heat outlet is connect with outer casing underpart, cold air inlet from
Outer casing underpart protrudes into shell, and connect with lower part collector box, and cold air outlet protrudes into shell from shell upper, and and upper-part centralized
The connection of gas box, the shell are exported equipped with liquefied ammonia, and the liquefied ammonia outlet is connect with outer casing bottom.
It further include liquid ammonia tube, the liquid ammonia tube and liquefied ammonia outlet connect, and put ammonia valve by ammonia point and connect with ammonia separator.
It further include raw material tracheae, the raw material tracheae is connected by the entrance of tonifying Qi oil eliminator and ammonia separator.
The entrance of the ammonia separator is equipped with pressure gauge A.
Pressure gauge B and thermometer are equipped between the cold air outlet and synthesis circulator.
The utility model has the beneficial effects that: putting ammonia valve by closing ammonia point, liquefied ammonia is trapped in ammonia separator, and
Liquefied ammonia is brought into cold exchange using air-flow, the carbon ammonia in heat transfer tube wall is crystallized, is dissolved in liquefied ammonia, then liquefied ammonia is arranged
It walks, keeps cool exchanger inside unobstructed, reduce the pressure difference that cool exchanger two goes out into two, it is ensured that cool exchanger long period is transported safely
Row.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is cool exchanger schematic diagram；
In figure: 1- soft water heater, 2- synthesis water cooler A, 3- synthesis water cooler B, 4- cool exchanger, 5- level-one ammonia are cold
Device, 6- second level ammonia cooler, 7- ammonia separator, 8- tonifying Qi oil eliminator, 9- synthesize circulator, 10- liquid ammonia tube, and 11- ammonia point puts ammonia
Valve, 12- raw material tracheae, 13- pressure gauge A, 14- pressure gauge B, 401- hot gas inlet, 402- heat outlet, 403- cold air inlet,
404- cold air outlet, 405- shell, 406- collector box, 407- heat exchanger tube, the outlet of 408- liquefied ammonia.
Specific embodiment
Be described further below the technical solution of the utility model, but claimed range be not limited to it is described.
As shown in Figure 1 and Figure 2, a kind of ammonia synthesis system of flushable cool exchanger, including soft water heater 1, synthesis water cooling
Device A2, synthesis water cooler B3, cool exchanger 4, level-one ammonia cooler 5, second level ammonia cooler 6, ammonia separator 7, synthesis circulator 9, institute
Cool exchanger 4 is stated equipped with hot gas inlet 401, heat outlet 402, cold air inlet 403, cold air outlet 404, the soft water heating
Device 1, synthesis water cooler A2, synthesis water cooler B3 are sequentially connected, and are synthesized water cooler B3 and connect with hot gas inlet 401, the heat
Gas outlet 402 is sequentially connected level-one ammonia cooler 5, second level ammonia cooler 6, ammonia separator 7, and ammonia separator 7 and cold air inlet 403 connect
It connects, the cold air outlet 404 is connect with synthesis circulator 9.
When system works, the synthesis gas come out from synthetic tower passes sequentially through soft water heater 1, synthesis water cooler A2, closes
It at water cooler B3, exchanges heat to hot gas, reduces its temperature, then entered on cool exchanger 4 by hot gas inlet 401, with
The lower unstripped gas of temperature exchanges heat, and after cool exchanger 4, synthesis gas is cooled to 20 DEG C to 25 DEG C, makes in synthesis gas
70%~85% ammonia condenses herein, and falls on 4 lower part of cool exchanger under gravity, is collected by liquid ammonia tube 10,
Synthesis gas continues to flow through level-one ammonia cooler 5 and second level ammonia cooler 6 after the heat exchange of cool exchanger 4, make temperature in synthesis gas into
One step reduces, and is then separated liquefied ammonia from synthesis gas by ammonia separator 7, puts ammonia valve 11 by ammonia point after Ammonia separation
Flow into liquid ammonia tube 10, the unstripped gas that is newly added with enter cool exchanger 4 together after exchanged heat or, by synthesis circulator 9
It is sent into synthetic tower, is reacted, so circulation is produced, due to containing the CO2 of about 6ppm in unstripped gas, in cool exchanger
It is reacted in 4 with gas ammonia, generates the crystallization of carbon ammonia, be attached on the inner wall of heat exchanger tube 407, influence to produce, it is therefore desirable to be cleared up, phase
It clears up with traditional shutdown, this system can dissolve the crystallization of carbon ammonia by liquefied ammonia, and by cleaning speed, operation is first to close
Ammonia point puts ammonia valve 11, improves the liquid level of liquefied ammonia in ammonia separator 7, and under the drive of gas, liquefied ammonia enters cold from cold air inlet 403
Exchanger 4, after liquefied ammonia fills collector box 406 and heat exchanger tube 407, liquefied ammonia can dissolve the carbon ammonia crystallization in heat exchanger tube 407, thus
So that cool exchanger 4 is kept clear, after the completion of dissolution, opens ammonia point and put ammonia valve 11, liquefied ammonia is discharged into liquid ammonia tube 10, complete clear
It washes, entire cleaning process time-consuming is short, without dismantling equipment, greatly improves working efficiency.
As shown in Fig. 2, the cool exchanger 4 includes shell 405, collector box 406, the collector box 406 is mounted on shell
Top and the bottom inside 405 are connected by more heat exchanger tubes 407 between collector box 406, and hot gas inlet 401 and 405 top of shell connect
It connects, heat outlet 402 is connect with 405 lower part of shell, and cold air inlet 403 protrudes into shell 405 from 405 lower part of shell, and under
Portion's collector box 406 connects, and cold air outlet 404 protrudes into shell 405 from 405 top of shell, and connect with upper part gas collection box 406,
The shell 405 is equipped with liquefied ammonia outlet 408, and the liquefied ammonia outlet 408 connect with 405 bottom of shell, flows out from synthetic tower
The higher synthesis gas of temperature exchanges heat outside heat exchanger tube 407 with the lower unstripped gas of temperature, thus at a temperature of making synthesis gas
Drop, makes ammonia condensing liquid, since synthesis gas is outside heat exchanger tube 407, can fall on 405 lower part of shell after condensation, convenient for receiving
Collect liquefied ammonia, and is flowed out outside shell 405 by liquefied ammonia outlet 408.
It further include liquid ammonia tube 10, the liquid ammonia tube 10 is connect with liquefied ammonia outlet 408, and puts ammonia valve 11 and ammonia point by ammonia point
It is connected from device 7, the liquefied ammonia in cool exchanger 4 and ammonia separator 7 is collected by liquid ammonia tube 10 and is stored in medial launder.
It further include raw material tracheae 12, the raw material tracheae 12 is connected by the entrance of tonifying Qi oil eliminator 8 and ammonia separator 7
It connects, nitrogen and hydrogen is supplemented by raw material tracheae 12, and synthesized by synthetic tower.
The entrance of the ammonia separator 7 is equipped with pressure gauge A13, passes through the difference of pressure gauge A13 and pressure gauge B14, work
People can quickly judge whether to need to clean cleaning cool exchanger 4, in actual production, when difference is greater than 0.3MPa
When, then it needs to clean cleaning cool exchanger 4.
It is equipped with pressure gauge B14 and thermometer 15 between the cold air outlet 404 and synthesis circulator 9, due to the temperature of liquefied ammonia
Spend it is lower than the temperature of unstripped gas, when clean cool exchanger 4, when the liquid level of liquefied ammonia is close to thermometer 15, the reading of thermometer 15
After decline, the liquid level of liquefied ammonia is judged convenient for worker, prevent liquefied ammonia be inhaled into synthesis circulator 9 in, influence the operation of equipment.
Claims (6)
1. a kind of ammonia synthesis system of flushable cool exchanger, it is characterised in that: including soft water heater (1), synthesis water cooler A
(2), water cooler B (3) are synthesized, cool exchanger (4), level-one ammonia cooler (5), second level ammonia cooler (6), ammonia separator (7), synthesizes and follows
Ring machine (9), the cool exchanger (4) go out equipped with hot gas inlet (401), heat outlet (402), cold air inlet (403), cold air
Mouth (404)；The soft water heater (1), synthesis water cooler A (2), synthesis water cooler B (3) are sequentially connected, and synthesize water cooler B
(3) it is connect with hot gas inlet (401)；The heat outlet (402) be sequentially connected level-one ammonia cooler (5), second level ammonia cooler (6),
Ammonia separator (7), and ammonia separator (7) is connect with cold air inlet (403)；The cold air outlet (404) and synthesis circulator (9)
Connection.
2. a kind of ammonia synthesis system of flushable cool exchanger as described in claim 1, it is characterised in that: the cool exchanger
It (4) include shell (405), collector box (406), the collector box (406) is mounted on the internal top and the bottom of shell (405), gas collection
By more heat exchanger tube (407) connections between box (406), hot gas inlet (401) is connect with shell (405) top, heat outlet
(402) it is connect with shell (405) lower part, cold air inlet (403) protrudes into shell (405) from shell (405) lower part, and and lower part
Collector box (406) connection, cold air outlet (404) protrude into shell (405) from shell (405) top, and with upper part gas collection box
(406) it connects, the shell (405) is equipped with liquefied ammonia outlet (408), and the liquefied ammonia outlet (408) and shell (405) bottom connect
It connects.
3. a kind of ammonia synthesis system of flushable cool exchanger as described in claim 1, it is characterised in that: further include liquid ammonia tube
(10), the liquid ammonia tube (10) connect with liquefied ammonia outlet (408), and puts ammonia valve (11) by ammonia point and connect with ammonia separator (7).
4. a kind of ammonia synthesis system of flushable cool exchanger as described in claim 1, it is characterised in that: further include unstripped gas
It manages (12), the raw material tracheae (12) is connect by tonifying Qi oil eliminator (8) with the entrance of ammonia separator (7).
5. a kind of ammonia synthesis system of flushable cool exchanger as described in claim 1, it is characterised in that: the ammonia separator
(7) entrance is equipped with pressure gauge A (13).
6. a kind of ammonia synthesis system of flushable cool exchanger as described in claim 1, it is characterised in that: the cold air outlet
(404) pressure gauge B (14) and thermometer (15) are equipped between synthesis circulator (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174705.1U CN209383400U (en) | 2018-12-24 | 2018-12-24 | A kind of ammonia synthesis system of flushable cool exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174705.1U CN209383400U (en) | 2018-12-24 | 2018-12-24 | A kind of ammonia synthesis system of flushable cool exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN209383400U true CN209383400U (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822174705.1U Expired - Fee Related CN209383400U (en) | 2018-12-24 | 2018-12-24 | A kind of ammonia synthesis system of flushable cool exchanger |
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| Country | Link |
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| CN (1) | CN209383400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747185A (en) * | 2020-12-10 | 2021-05-04 | 安徽金禾实业股份有限公司 | Material conveying pipe heat tracing device and material conveying heat tracing method for alkylation section |
-
2018
- 2018-12-24 CN CN201822174705.1U patent/CN209383400U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747185A (en) * | 2020-12-10 | 2021-05-04 | 安徽金禾实业股份有限公司 | Material conveying pipe heat tracing device and material conveying heat tracing method for alkylation section |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190913 Termination date: 20201224 |