CN212178538U - Roots blower website for degassing system and degassing system applying Roots blower website - Google Patents
Roots blower website for degassing system and degassing system applying Roots blower website Download PDFInfo
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- CN212178538U CN212178538U CN202020460704.8U CN202020460704U CN212178538U CN 212178538 U CN212178538 U CN 212178538U CN 202020460704 U CN202020460704 U CN 202020460704U CN 212178538 U CN212178538 U CN 212178538U
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Abstract
The utility model discloses a degassing system is with roots's fan website and use its degassing system, this roots's fan website includes: the system comprises a plurality of parallel roots blower subsystems and a gas main pipe connected with the plurality of parallel roots blower subsystems, wherein the gas main pipe is connected with a degassing system; the gas main pipe is provided with at least one pressure adjusting unit; each Roots blower subsystem comprises: a Roots blower and at least one emptying regulating valve, a one-way valve, a heat exchanger and a manual butterfly valve which are arranged on an outlet pipeline of the Roots blower. The Roots blower website of the utility model improves the system stability, ensures the safe operation of the system, reduces the energy consumption and lowers the investment cost on the premise of meeting the requirement of material degassing; the burden of a subsequent tail gas treatment system is reduced, and the investment cost of subsequent equipment is saved; the total occupied area of the equipment is small, the quantity of the equipment is greatly reduced compared with that of the common design scheme, and the daily maintenance and repair workload of users is greatly reduced.
Description
Technical Field
The utility model relates to a chemical production field, concretely relates to degassing system is with roots's fan website and use its degassing system.
Background
In the production process of EVA/LDPE, after the processes of polymerization and granulation, a large amount of monomer volatile compounds (VOC) such as ethylene, vinyl acetate and the like are still left in EVA/LDPE particles and are continuously precipitated, and the accumulation and residue of the volatile compounds can cause the safety problem in the production process, so that a set of degassing system is needed to be arranged, the degassing system has the function of carrying out back flushing on granular materials in a degassing bin through a large amount of air in a certain time, the volatile compounds are removed and are brought into a downstream RTO system for harmless treatment, and the granules after full degassing can be subjected to subsequent treatments such as conveying, packaging, transportation and the like.
Disclosure of Invention
The utility model aims at providing a degassing system that roots blower website and use it for degassing system exactly in order to solve above-mentioned problem, improved system stability, guarantee the safe operation of system, the energy consumption reduces, and investment cost is lower.
The purpose of the utility model is realized like this:
the utility model discloses a roots blower website for degasification system includes:
the system comprises a plurality of parallel roots blower subsystems and a gas main pipe connected with the plurality of parallel roots blower subsystems, wherein the gas main pipe is connected with a degassing system;
the gas main pipe is provided with at least one pressure adjusting unit;
each Roots blower subsystem comprises: a Roots blower and at least one emptying regulating valve, a one-way valve, a heat exchanger and a manual butterfly valve which are arranged on an outlet pipeline of the Roots blower.
The gas main pipe in the Roots blower website for the degassing system is also provided with a temperature transmitter and a first flow transmitter.
The outlet pipeline of the Roots blower in the Roots blower website for the degassing system is also provided with a first pressure transmitter and a pneumatic butterfly valve.
The degassing system is characterized in that an emptying regulating valve, a one-way valve, a heat exchanger, a first pressure transmitter, a pneumatic butterfly valve and a manual butterfly valve are sequentially arranged on an outlet pipeline of the Roots blower in the Roots blower website along the airflow direction.
The degassing system is characterized in that an emptying regulating valve, a one-way valve, a heat exchanger and a manual butterfly valve are sequentially arranged on an outlet pipeline of the Roots blower in the Roots blower website along the airflow direction.
The pressure regulating unit in the Roots blower website for the degassing system at least comprises a pressure regulating valve and a second pressure transmitter interlocked with the pressure regulating valve.
The utility model also provides an use degasification system of roots blower website for degasification system, this degasification system is connected with the gas manifold, and it includes:
a plurality of parallel degasification subsystems, each degasification subsystem includes a plurality of parallel degasification feed bin systems, which at least includes the following components installed along the airflow direction:
a second flow transmitter;
each degassing pipeline is provided with a degassing butterfly valve and a tile pulling pipe; and
a degassing bin; a plurality of degassing pipelines are connected with the bottom of the degassing bin.
The top of the degassing bin in the degassing system is connected with a tail gas treatment pipeline.
The roots blower subsystem in the degassing system comprises five paths, the degassing subsystem comprises two paths, and each path of degassing subsystem comprises five degassing bin systems connected in parallel. The number of degassing pipes is three.
The Roots blower website of the utility model improves the system stability, ensures the safe operation of the system, reduces the energy consumption and lowers the investment cost on the premise of meeting the requirement of material degassing; the burden of a subsequent tail gas treatment system is reduced, and the investment cost of subsequent equipment is saved; the total occupied area of the equipment is small, the quantity of the equipment is greatly reduced compared with that of the common design scheme, and the daily maintenance and repair workload of users is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a degassing system using a Roots blower website for a degassing system according to the present invention;
FIG. 2 is a schematic structural view of a Roots blower subsystem of the present invention;
fig. 3 is a schematic structural diagram of the pressure regulating unit of the present invention;
FIG. 4 is a schematic structural diagram of a degassing subsystem of the present invention;
fig. 5 is a schematic diagram of a degassing bin system according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 5, an embodiment of a degassing system of a roots blower website for a degassing system is shown, which includes:
the system comprises five parallel roots blower subsystems 100 and a gas main pipe 200 connected with the five parallel roots blower subsystems, wherein the gas main pipe 200 is connected with a degassing system 300, a pressure regulating unit 201, a temperature transmitter 202 and a first flow transmitter 203 are sequentially arranged on the gas main pipe 200, and the pressure regulating unit 201 comprises a pressure regulating valve 201a and a second pressure transmitter 201b interlocked with the pressure regulating valve 201 a;
each Roots blower subsystem 100 includes: a Roots blower 101 and an outlet pipeline arranged on the Roots blower 101 are sequentially provided with an emptying regulating valve 102, a one-way valve 103, a heat exchanger 104, a first pressure transmitter 105, a pneumatic butterfly valve 106 and a manual butterfly valve 107;
referring to fig. 2, the exhaust system 300 is shown in a state where the roots blower website of the above embodiment is connected to the exhaust system 300, and the exhaust system 300 includes:
two-way parallel degassing subsystem 301, each degassing subsystem 301 comprising five parallel degassing silo systems 302, which are installed in the direction of gas flow:
a second flow transmitter 303;
three degassing pipelines 304, wherein each degassing pipeline 304 is provided with a degassing butterfly valve 305 and a tile pulling pipe 306;
a degassing bin 307; three degassing pipelines 304 are connected with the bottom of a degassing bin 307, and the top of the degassing bin 307 is connected with a tail gas treatment pipeline 308.
The utility model discloses an use:
firstly, chilled water is introduced into a heat exchanger 104 at the outlet of a Roots blower 101, a manual butterfly valve 107 at the outlet of the heat exchanger is opened, and the guarantee work before the system is started is manually done.
Secondly, the degassing butterfly valve 305 on the degassing pipeline 304 of the degassing stock bin 307 is completely opened, the pneumatic butterfly valve 106 at the outlet of the heat exchanger 104 and the emptying regulating valve 102 at the outlet of the Roots blower 101 are simultaneously opened, and then the regulating valve of the pressure balancing unit 201 is opened, so that all pipelines of the Roots blower website are opened before starting, and the pressure holding of the Roots blower 101 is avoided.
Thirdly, starting the four roots fans 101, wherein the rest roots fans are used as standby machines and do not need to be started, and after the running is stable, the pressure of the roots fan website is basically zero; slowly closing the vent regulator valve 102 at the outlet of the Roots blower 101 and eventually closing completely, the pressure at the web site gradually rises, and the final pressure will approach the pressure required for the entire degassing system 300;
finally, the pressure of the website is made to reach the required operating pressure through the interlocking action of the pressure regulating valve 201a of the pressure regulating unit 201 and the second pressure transmitter 201b, so that the pressure of the website is ensured to be constant; in order to ensure the capacity of the regulating unit 201, the regulating flow of the pressure regulating valve 201a is 20% more than that of a single Roots blower 101; since the lava pipe 306 is provided on each degassing pipe 304, it is also ensured that the degassing air volume supplied to each degassing silo 307 is constant.
The utility model discloses roots's fan website sets up heat exchanger 104 and temperature transmitter 202, the high-temperature gas after its purpose cooling compression to reach required degasification temperature, avoid because the high temperature effect causes 307 in the storehouse of degasification material bonding, softening, and finally influence entire system's stable operation and safety.
If one or more degassing storage bins 307 need to be overhauled, only the degassing butterfly valve 305 in front of the tile pulling pipe 306 needs to be closed, and online overhauling or shutdown of the degassing storage bin 307 can be achieved. Because the total gas amount required by the degassing bin 307 is reduced at this time, the pressure of the website will rise, and the opening degree of the pressure regulating valve 201a will increase under the action of the pressure regulating unit 201 until the operating pressure of the website is reduced to the required pressure; if the pressure regulating valve 201a is completely opened, the pressure of the website is still continuously increased, which indicates that the flow of the gas to be exhausted is larger than the flow of one roots blower 101, at this time, one running roots blower 101 can be stopped, the pressure of the website is gradually regulated to a normal state through the pressure regulating unit 201, and meanwhile, the operation energy consumption of the system is also saved.
And starting and stopping the Roots blower 101 on line. When the roots blower 101 needs to be started on line, the vent regulating valve 102 at the outlet of the roots blower 101 is opened firstly, the roots blower 101 is started, after normal operation, the pneumatic butterfly valve 106 is opened, then the vent regulating valve 102 is closed slowly, under the action of pressure, the check valve 103 at the outlet of the roots blower 101 is opened slowly until being opened completely, and finally the vent regulating valve 102 is closed completely, so that gas supply to a website is realized. When the roots blower 101 needs to be stopped online, the roots blower 101 can be directly stopped online due to the protection effect of the one-way valve 103, and the pneumatic butterfly valve 106 at the outlet of the roots blower 101 is closed. The design scheme overcomes the defect that the Roots blower 101 cannot be started and stopped with load, and realizes the functions of on-line starting and stopping.
The second flow transmitter 303 is arranged on a connecting pipeline between the gas main pipe 200 of the website and each degassing bin 307, so that not only can the total air volume provided by the website be detected, but also the degassing air volume of a single degassing bin 307 can be detected, when the degassing air volume is lower than the required air volume, the second flow transmitter 303 can send out an alarm or interlocking signal to start a protective measure, and the situation that the system is in a dangerous operation state due to the fact that a large amount of volatile gas is accumulated in the degassing bin 307 is avoided.
Taking a website configured with five roots blowers 101 as an example in this embodiment, the five roots blowers 101 are mutually standby, and there is no dedicated standby machine. According to the total air quantity of the degassing system 300 and the specification conditions of the Roots blower 101, the following requirements are met during model selection: when the four Roots blowers 101 run simultaneously, the maximum required air volume of the degassing system 300 is met; when the three Roots blowers 101 operate simultaneously, the required air volume of the degassing system 300 under the normal working condition is met. According to requirements, five roots blowers 101 are finally configured in the embodiment, the five roots blowers 101 are mutually standby, and a special standby machine does not exist, so that the service life of the standby machine is prevented from being influenced due to frequent starting of the standby machine. In the starting procedure of the roots blower 101, the roots blower 101 which is set to run first is stopped first, so that the running time and the starting and stopping times of each roots blower 101 are basically the same, the condition that the starting and stopping times are uneven is avoided, and the mutual standby functions are realized.
The outlet of each Roots blower 101 is provided with the emptying regulating valve 102, the one-way valve 103 and the pneumatic butterfly valve 106, the Roots blower 101 is controlled by the control system to be started and stopped on line, namely, when one Roots blower 101 is required to be started and operated, other Roots blowers 101 are still in an operating state, and the normal work of the whole system is not influenced. When the roots blower 101 needs to be started on line, the vent regulating valve 102 is opened first, the roots blower 101 is started, after normal operation, the pneumatic butterfly valve 106 is opened, then the vent regulating valve 102 is closed slowly, the check valve 103 is opened slowly until the check valve is opened completely under the action of pressure, and finally the vent regulating valve 102 is also closed completely, so that gas supply to the degassing system 300 is realized. The design scheme overcomes the defect that the Roots blower 101 cannot be started with load, and realizes the function of on-line starting.
All set up on the degasification pipeline 304 of every storage bin 307 that outgases and draw tile pipe 306, as long as draw the pressure before tile pipe 306 invariable, no matter how change of pressure behind the pipe, the gas flow through drawing tile pipe 306 is invariable, just also guarantees that the degasification amount of wind that every storage bin 307 that outgases obtains is invariable, and this also chooses for use the utility model discloses a roots blower website's prerequisite.
When a degassing bin 307 stops degassing, redundant air quantity exists in the degassing system 300, meanwhile, the redundant air quantity is not enough to stop one roots blower 101, at this time, if the redundant air quantity is not discharged, the pressure of the whole system is raised until the pressure exceeds the rated pressure of the roots blower 101, and a stopping accident of a blower website is caused, in order to avoid the accident, the pressure of a pipe network of the degassing system 300 is kept stable, so that the air quantity distributed to each degassing point is stable and equal, and therefore, the pressure regulating unit 201 is arranged in the roots blower website.
The Roots blowers 101 of the Roots blower website of the utility model are mutually standby, and the system stability is improved on the premise of meeting the degassing requirement of materials, thereby ensuring the safe operation of the system;
taking a set of 100KTA device as an example, sixteen degassing bins 307 are arranged, and compared with the one-to-one configuration of the common Roots blower 101 and the degassing bins 307, the energy consumption is reduced by 15% in normal operation; the investment cost is reduced by about 15-20%;
by adopting the degassing system 300 of the utility model to optimize the total degassing air quantity, the air quantity is minimized under the condition of meeting the degassing requirement, thus the burden of the subsequent tail gas treatment system is reduced, and the investment cost of the subsequent equipment is saved;
the total occupied area of the equipment is small, the quantity of the equipment is greatly reduced compared with that of the common design scheme, and the daily maintenance and repair workload of users is greatly reduced.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (10)
1. A Roots blower website for degasification system, which is characterized in that it comprises:
the system comprises a plurality of parallel roots blower subsystems and a gas main pipe connected with the plurality of parallel roots blower subsystems, wherein the gas main pipe is connected with a degassing system;
the gas main pipe is provided with at least one pressure adjusting unit;
each path of the Roots blower subsystem comprises: a Roots blower and at least one emptying regulating valve, a one-way valve, a heat exchanger and a manual butterfly valve which are arranged on an outlet pipeline of the Roots blower.
2. A roots blower website for a degassing system as in claim 1 wherein the gas manifold further mounts a temperature transmitter and a first flow transmitter.
3. A roots blower website for a degassing system as claimed in claim 1 wherein the outlet line of the roots blower is further provided with a first pressure transducer and a pneumatic butterfly valve.
4. A roots blower website for a degassing system as set forth in claim 3 wherein the outlet line of the roots blower is sequentially fitted with the vent regulating valve, the check valve, the heat exchanger, the first pressure transmitter, the pneumatic butterfly valve and the manual butterfly valve in a gas flow direction.
5. A roots blower website for a degassing system as set forth in claim 1 wherein said roots blower outlet line is provided with said vent control valve, said check valve, said heat exchanger and said manual butterfly valve in the order of gas flow.
6. A roots blower website for a degassing system as set forth in claim 1 wherein said pressure regulating unit comprises at least one pressure regulating valve and a second pressure transducer interlocked with the pressure regulating valve.
7. A degassing system using a roots blower website for a degassing system as claimed in claim 1 wherein the degassing system is connected to said gas manifold and comprises:
a plurality of parallel degasification subsystems, each degasification subsystem includes a plurality of parallel degasification feed bin systems, which at least includes the following components installed along the airflow direction:
a second flow transmitter;
each degassing pipeline is provided with a degassing butterfly valve and a tile pulling pipe; and
a degassing bin; and the plurality of degassing pipelines are connected with the bottom of the degassing bin.
8. The degassing system of claim 7, wherein a top portion of the degassing bin is connected to a tail gas treatment line.
9. The degassing system of claim 7, wherein the roots blower subsystem comprises five passes, and the degassing subsystem comprises two passes, each pass comprising five degassing bin systems connected in parallel.
10. The degassing system of claim 7 wherein the number of degassing conduits is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020460704.8U CN212178538U (en) | 2020-04-01 | 2020-04-01 | Roots blower website for degassing system and degassing system applying Roots blower website |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020460704.8U CN212178538U (en) | 2020-04-01 | 2020-04-01 | Roots blower website for degassing system and degassing system applying Roots blower website |
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| CN212178538U true CN212178538U (en) | 2020-12-18 |
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| CN202020460704.8U Active CN212178538U (en) | 2020-04-01 | 2020-04-01 | Roots blower website for degassing system and degassing system applying Roots blower website |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280260A (en) * | 2021-06-11 | 2021-08-20 | 内蒙古瑞盛天然石墨应用技术研究院 | Negative pressure wind gas exhaust gas recycling device |
| CN114263610A (en) * | 2021-12-29 | 2022-04-01 | 安徽马钢气体科技有限公司 | Control method of Roots blower automatic start-stop system |
| CN114656052A (en) * | 2022-04-29 | 2022-06-24 | 重庆江增船舶重工有限公司 | Multistage parallel aeration blower operation method for sewage treatment |
-
2020
- 2020-04-01 CN CN202020460704.8U patent/CN212178538U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280260A (en) * | 2021-06-11 | 2021-08-20 | 内蒙古瑞盛天然石墨应用技术研究院 | Negative pressure wind gas exhaust gas recycling device |
| CN114263610A (en) * | 2021-12-29 | 2022-04-01 | 安徽马钢气体科技有限公司 | Control method of Roots blower automatic start-stop system |
| CN114656052A (en) * | 2022-04-29 | 2022-06-24 | 重庆江增船舶重工有限公司 | Multistage parallel aeration blower operation method for sewage treatment |
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