CN214930424U

CN214930424U - Mobile combined type air return treatment device

Info

Publication number: CN214930424U
Application number: CN202121152824.2U
Authority: CN
Inventors: 张曙光; 项国飞; 包国治; 乔石磊; 吕小圣; 万敏; 张剑; 陈伟
Original assignee: China Resources Gas Shanghai Co ltd; Cssc Hengyu Energy Shanghai Co ltd; Jiangsu Dayang Offshore Equipment Co ltd; Jiangsu University of Science and Technology
Current assignee: China Resources Gas Shanghai Co ltd; Cssc Hengyu Energy Shanghai Co ltd; Jiangsu Dayang Offshore Equipment Co ltd; Jiangsu University of Science and Technology
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-11-30
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses a remove combination formula return gas processing apparatus belongs to liquefied gas boats and ships technical field, the device includes that a burning section of thick bamboo and gas connect row, through the return gas pipeline between a burning section of thick bamboo and the gas joint row, ignition gas pipeline and nitrogen gas pipe connection, the gas joint is arranged and is equipped with the return gas joint of being connected with the return gas pipeline, the ignition gas joint of being connected with the ignition gas pipeline and the nitrogen gas joint of being connected with the nitrogen gas pipe connection, the end of giving vent to anger of return gas pipeline is located a burning section of thick bamboo, the nozzle of ignition gas pipeline is located a burning section of thick bamboo, the tail end and the return gas pipe connection of nitrogen gas pipeline. The utility model is safe and efficient and can not damage the atmospheric ecological environment by burning the return air; the combustion cylinder is relatively sealed, open fire cannot be seen from the outside, the range of heat radiation to the outside is small, safety is realized, and the combustion efficiency is high; the gas return processing device is standardized, modularized and mobile by arranging a plurality of integrated processing units, and is suitable for liquefied gas ships of different types and different gas return amounts.

Description

Mobile combined type air return treatment device

Technical Field

The utility model belongs to the technical field of liquefied gas boats and ships, concretely relates to remove combination formula return-air processing apparatus.

Background

The LNG carrier and the LPG carrier are liquefied gas carriers which mainly transport liquefied natural gas and liquefied petroleum gas, the liquefied gas carriers further include other liquefied gas carriers such as a liquid ammonia carrier and a liquid hydrogen carrier, and the dual-fuel carrier refers to a carrier which uses liquefied gas as a main fuel and includes an LNG-powered carrier, an LPG-powered carrier, a liquid ammonia-powered carrier and a liquid hydrogen-powered carrier. As the environmental protection policy in China has been changed from the pollution end treatment in the past to the source control and the whole production process control. Clean production is a major action for implementing a strategy of sustainable development and is an objective requirement for promoting the transition of economic growth modes, so that the positions of liquefied gas transport ships and power ships are more and more important. In the process of carrying out liquefied gas fuel ship mobile filling or gas test on liquefied gas transportation ships and power ships taking liquefied gas as fuel, a large amount of return gas such as petroleum gas or natural gas which cannot be recycled can be generated, the existing treatment mode is directly discharged into the atmosphere, but pollution and harm are brought to the atmospheric ecological environment, and the return gas needs to be treated in order to avoid pollution and harm to the atmospheric ecological environment and the production environment.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: to the above-mentioned problem that exists among the prior art, the utility model aims to solve the technical problem that a remove combination formula return air processing apparatus of safe high-efficient environmental protection is provided.

The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a technical scheme as follows:

the utility model provides a remove combination formula return air processing apparatus, includes that a burning section of thick bamboo and gas joint arrange, through return air pipeline, ignition gas pipeline and nitrogen gas tube coupling between a burning section of thick bamboo and the gas joint arrange, the gas joint is equipped with in the row and connects with return air pipeline connection's return air, with ignition gas pipeline connection's ignition gas joint and with nitrogen gas tube coupling's nitrogen gas joint, the end of giving vent to anger of return air pipeline is located a burning section of thick bamboo, the nozzle of ignition gas pipeline is located a burning section of thick bamboo, the tail end and the return air pipeline of nitrogen gas pipeline are connected.

Furthermore, the number of the air outlet ends is more than one, and the number of the nozzles is more than one.

Furthermore, one end of the air return pipeline, which is close to the combustion cylinder, is provided with a first flame arrester, and one end of the ignition gas pipeline, which is close to the combustion cylinder, is provided with a second flame arrester.

Furthermore, the end of the air return pipeline, which is close to the gas joint row, is provided with a flowmeter, and the air return pipeline is also provided with an air return pressure gauge, an air return pressure transmitter, an air return thermometer and an air return temperature transmitter.

Further, still be equipped with ignition gas pressure table and ignition gas pressure transmitter on the ignition gas pipeline, still be equipped with nitrogen gas manometer and nitrogen gas pressure transmitter on the nitrogen gas pipeline.

Furthermore, a direct vent pipe is further arranged on the air return pipeline, and a direct vent valve is arranged on the direct vent pipe.

Furthermore, the inner wall of the combustion cylinder is provided with a fireproof heat-insulating layer, and the bottom of the combustion cylinder is provided with a heat radiation resistant silencing screen.

Further, a flame observation port and a flame detector are arranged on the combustion cylinder.

Further, a blower is further arranged on the combustion cylinder.

Furthermore, the combustion cylinder, the gas return pipeline, the ignition gas pipeline and the nitrogen pipeline are integrally arranged to form an integrated processing unit, and the number of the integrated processing units is one or more than one.

Has the advantages that: compared with the prior art, the utility model has the advantages of it is following: the return air is combusted through the cooperation of the combustion cylinder, the pipeline and the safety facility, so that the device is safe and efficient and cannot damage the atmospheric ecological environment; the combustion cylinder is relatively sealed, open fire cannot be seen from the outside, the range of heat radiation to the outside is small, and the combustion cylinder is safe and high in combustion efficiency; can set up a plurality of integrated processing units that contain a section of thick bamboo of burning and pipeline, with gas return processing apparatus standardization, modularization, remove, be suitable for the liquefied gas boats and ships of different grade type, different return volumes, the device is whole to be convenient for fast transportation and aggregate erection, and the convenience is good, the flexibility is high.

Drawings

Fig. 1 is a schematic diagram of the system structure of the present invention.

Detailed Description

The present invention will be further illustrated by the following specific examples, which are carried out on the premise of the technical scheme of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, a mobile combined type gas return processing device comprises a combustion cylinder 1 and a gas joint row 5, wherein the combustion cylinder 1 and the gas joint row 5 are connected through a gas return pipeline 2, an ignition gas pipeline 3 and a nitrogen pipeline 4, a gas return joint connected with the gas return pipeline 2 is arranged in the gas joint row 5, and the gas return joint is connected with a discharge pipeline of return gas such as natural gas or petroleum gas discharged during gas test and liquefied gas filling of a liquefied gas ship; the ignition gas joint is connected with a gas pipeline for ignition in the combustion cylinder 1, and an ignition gas source is carried by the device; the nitrogen connector is connected with the nitrogen pipeline 4 and is used for connecting a nitrogen source of the device; the gas outlet end 21 of the gas return pipeline 2 is positioned in the combustion cylinder 1, the gas outlet end 21 is provided with a plurality of gas outlets and is uniformly distributed in the combustion cylinder 1 (can be distributed in a linear arrangement or in an annular arrangement), the natural gas return gas discharged by the ship is discharged from the gas outlet end 21, the nozzles 31 of the ignition gas pipeline 3 are positioned in the combustion cylinder 1, the two nozzles 31 are arranged at positions close to the gas outlet end 21, the ignition gas is sprayed out of the nozzles 31, a lasting fire source is formed at the positions of the nozzles 31 through an ignition device arranged inside, the natural gas return gas sprayed out of the gas outlet end 21 can be ignited, and the return gas is continuously combusted, so that the purpose of treating the natural gas return gas is achieved, the treatment process is environment-friendly and efficient, pollution to the ecological environment is avoided, and harm to the production environment is avoided; the tail end of nitrogen pipeline 4 is connected with muffler way 2 to utilize nitrogen gas to sweep muffler way 2, can utilize nitrogen gas to carry out the preliminary purging in muffler way and the combustion cylinder 1 before carrying out the return-air processing, prevent to take place the detonation in the combustion cylinder 1.

In order to improve the safety of the return gas pipeline 2 and the ignition gas pipeline 3, a first flame arrester 22 is arranged at one end of the return gas pipeline 2 close to the combustion cylinder 1, has the safety function of backfire prevention, and is matched with nitrogen pre-purging to improve the safety; and a second flame arrester 32 is arranged at one end of the ignition gas pipeline 3 close to the combustion cylinder 1, so that the ignition gas pipeline 3 is prevented from being back-fire.

The end of the gas return pipeline 2 close to the gas joint row 5 is provided with a flowmeter 23, the flowmeter 23 is used for monitoring the gas flow passing through the gas return pipeline 2, and is convenient for the monitoring and statistical control of the working personnel, the gas return pipeline 2 is also provided with a gas return pressure gauge 24, a gas return pressure transmitter 25, a gas return temperature gauge 26 and a gas return temperature transmitter 27, the gas return pressure transmitter 25 and the gas return temperature transmitter 27 transmit data to an integrated control system of the equipment of a control room, various instruments are used for carrying out on-site monitoring and remote monitoring on the pressure and temperature data in the gas return pipeline 2, the gas return pipeline is also provided with a straight exhaust pipe 28, the nitrogen is used for carrying out fuel cabin drying and inerting or carrying out cooling test by using liquid nitrogen in the gas test process, the content of the nitrogen in the gas discharged in the ship cabin at the later stage is gradually increased, and the gas in the gas return pipeline 2 can be directly discharged when the whole gas is changed into the nitrogen, the direct vent 28 is arranged on the pipe near the end of the combustion can 1, and the direct vent 29 is arranged on the direct vent 28, so that the gas in the gas return pipe 2 can be directly discharged to the atmosphere through the direct vent 29.

The ignition gas pipe 3 is further provided with an ignition gas pressure gauge 33 and an ignition gas pressure transmitter 34 for monitoring pressure data of the ignition gas in the ignition gas pipe 3. The nitrogen pipeline 4 is further provided with a nitrogen pressure gauge 41 and a nitrogen pressure transmitter 42 for monitoring pressure data of nitrogen in the nitrogen pipeline 4. These data are sent to the control system of the device, and the return gas line 2, the ignition gas line 3 and the nitrogen gas line 4 are provided with a plurality of valves, and through a preset program, the control system can control the valves on the lines according to the received data.

The combustion cylinder 1 can be arranged into a cylinder, the inner wall of the combustion cylinder is provided with a fireproof heat-insulating layer 11, the fireproof heat-insulating layer 11 can be made of refractory ceramic fibers, the shell of the combustion cylinder 1 can be made of carbon steel, the refractory ceramic fibers are fixed by U-shaped nails, surface curing agents and stainless steel nets, the combustion cylinder is not affected by rain or rapid temperature change inside the cylinder body and has good sound absorption and noise reduction characteristics, the design of the combustion cylinder 1 enables the air return treatment process to be closed, fire light cannot be seen from the outside, no light pollution exists, and low heat radiation exists; the bottom of the combustion cylinder 1 is provided with a heat radiation prevention silencing screen 12, the heat radiation prevention silencing screen 12 can insulate the heat of the bottom of the combustion cylinder 1 while circulating air, so that damage to a platform placed at the bottom due to overhigh temperature in the combustion cylinder 1 is prevented, hot flue gas generated after return gas such as natural gas is combusted is discharged from the top under the suction action of a cylinder, a certain negative pressure is formed in a combustion area, so that external air can automatically and continuously enter the torch cylinder from the bottom through the heat radiation prevention silencing screen, sufficient air quantity required by return gas combustion is ensured, and the return gas and the air can be optimally mixed under the action of an air distributor so as to realize smokeless combustion; the redundant air is mixed with the flue gas, so that the exhaust temperature of the flue gas is effectively reduced, the heat radiation capability of the flue gas to the surrounding environment is greatly reduced, and the combustion flame and the combustion high-temperature area of the return gas are both sealed in the combustion cylinder 1, so that the leakage of the heat radiation of the flame during the return gas combustion is avoided, and the outside cannot see the fire light and cannot feel the heat radiation of the flame; be equipped with flame viewing aperture 13 and flame detector 14 on the combustion cylinder 1, the personnel can be through the flame condition in the combustion cylinder 1 of flame viewing aperture 13 direct observation, flame detector 14 can access control system, form safety protection, in order to improve the combustion efficiency in the combustion cylinder 1, can also set up air-blower 6 in the combustion cylinder 1 side, can start air-blower 6 when breathing in naturally and can not satisfy the demand of abundant burning and blast air.

In order to improve the treatment efficiency of the return gas, a plurality of combustion cylinders 1, a plurality of return gas pipelines 2, a plurality of ignition gas pipelines 3 and a plurality of nitrogen pipelines 4 can be respectively arranged, each combustion cylinder 1, each return gas pipeline 2, each ignition gas pipeline 3 and each nitrogen pipeline 4 form an integrated treatment unit, for example, 3 integrated treatment units (including a first treatment unit, a second treatment unit and a third treatment unit) can be simultaneously arranged according to the discharge amount of the liquefied gas ships and are connected with a gas joint row 5 to treat a large amount of return gas discharged by the liquefied gas ships (the liquefied gas ships comprise the existing LNG transport ships, LPG transport ships, LNG power ships, LPG power ships and future transport and power ships for methanol, ammonia, hydrogen and other liquefied gases), the discharged return gas enters the gas joint row 5 and then is firstly combusted through the first treatment unit, if the discharge amount of the return gas is large, control valve on the second processing unit can be opened and participate in combustion processing, the third unit can be opened and participate in return-gas combustion processing when return-gas pressure further increases, tertiary processing can adapt to the condition of different return-gas volumes, homoenergetic stable combustion processing when guaranteeing minimum discharge or maximum accident discharge, economy environmental protection just improves liquefied gas ship security, every integration processing unit can adopt the container to place, form fixed module, be convenient for quick transportation and aggregate erection, also be convenient for deposit when not needing to use, the convenience and the flexibility of return-gas processing apparatus have been improved, the whole standardization of return-gas processing apparatus, modularization, removal, fill the blank in liquefied gas ship return-gas processing apparatus market.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a remove combination formula return-air processing apparatus, its characterized in that, includes that a combustion section of thick bamboo (1) and gas connect row (5), connect through return-air pipeline (2), ignition gas pipeline (3) and nitrogen gas pipeline (4) between combustion section of thick bamboo (1) and the gas joint row (5), be equipped with in gas joint row (5) and connect with return-air pipeline (2) the return-air that is connected, with ignition gas pipeline (3) the ignition gas joint of being connected and connect with nitrogen gas pipeline (4) nitrogen gas, the end (21) of giving vent to anger of return-air pipeline (2) is located combustion section of thick bamboo (1), nozzle (31) of ignition gas pipeline (3) are located combustion section of thick bamboo (1), the tail end and the gas pipeline (2) of nitrogen gas pipeline (4) are connected.

2. A mobile combined type return air treatment device according to claim 1, characterized in that the number of the air outlet ends (21) is more than one, and the number of the nozzles (31) is more than one.

3. A mobile combined return air treatment unit according to claim 1, characterised in that the return air line (2) is provided with a first flame arrester (22) at the end adjacent to the combustion cylinder (1), and the ignition gas line (3) is provided with a second flame arrester (32) at the end adjacent to the combustion cylinder (1).

4. A mobile combined type air return processing device according to claim 1, characterized in that a flowmeter (23) is arranged at one end of the air return pipeline (2) close to the gas joint row (5), and an air return pressure gauge (24), an air return pressure transmitter (25), an air return temperature gauge (26) and an air return temperature transmitter (27) are further arranged on the air return pipeline (2).

5. The mobile combined type return air treatment device according to claim 1, wherein an ignition gas pressure gauge (33) and an ignition gas pressure transmitter (34) are further arranged on the ignition gas pipeline (3), and a nitrogen gas pressure gauge (41) and a nitrogen gas pressure transmitter (42) are further arranged on the nitrogen gas pipeline (4).

6. A mobile combined return air treatment unit according to claim 1, characterised in that the return air line (2) is also provided with a direct vent (28), and that the direct vent (28) is provided with a direct vent valve (29).

7. A mobile combined type return air treatment device according to claim 1, characterized in that the inner wall of the combustion cylinder (1) is provided with a fireproof heat insulation layer (11), and the bottom is provided with a heat radiation resistant sound deadening screen (12).

8. A mobile combined type return air treatment device according to claim 1, characterized in that a flame viewing port (13) and a flame detector (14) are provided on the combustion cylinder (1).

9. A mobile combined return air treatment unit according to claim 1, characterised in that the combustion cylinder (1) is also provided with a blower (6).

10. The mobile combined type return air treatment device according to claim 1, characterized in that the combustion cylinder (1), the return air pipe (2), the ignition gas pipe (3) and the nitrogen pipe (4) are integrally arranged to form an integrated treatment unit, and the number of the integrated treatment units is one or more than one.