Novel anti-backfire facility for ammonia torch
Through the combination of an integrated liquid separation ignition tank and monitoring system, the existing ammonia torch fire prevention facilities have high investment, complex piping and large maintenance workloads, and provide a new ammonia torch fire prevention facilities with high safety, easy implementation and strong applicability.
Patent Information
- Application Number
- CN202422149194.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The existing ammonia torch anti-fire facilities have high investment, complex piping and large maintenance workloads. In particular, large-scale synthetic ammonia devices require multiple IIC pipe fire blockers to be connected in parallel, which has problems such as high investment, complex piping and large maintenance workloads.
An integrated liquid separation fireproof tank is adopted, including a liquid separation functional area and a fireproof functional area. It combines a horizontal separation tank, a dry fireproof tower, a vaporization heating coil and a monitoring instrument. It realizes automatic control through a liquid level meter, a thermometer, etc., and uses a Ball ring to separate liquid droplets and heat steam vaporization liquid ammonia, which simplifies the design and maintenance of anti-temperature facilities.
It realizes ammonia torch anti-fire facilities with high safety, simple implementation, fast application and strong applicability, reduces investment costs and maintenance workload, and is suitable for large-scale synthetic ammonia devices.
Smart Images
Figure CN223153580U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ammonia torch anti-backfire, and particularly relates to a novel ammonia torch anti-backfire facility. Background Art
[0002] Using an elevated torch to treat harmful waste gas is a common means for treating combustible and toxic waste gas in petrochemical plants. The torch system must adopt safe and reliable anti-backfire measures. Common anti-backfire measures include: flame arrester + speed seal or water seal tank + speed seal. Under normal circumstances, the mode of water seal tank + speed seal is recommended by the specification. The accident discharge gas of the synthetic ammonia plant contains combustible gases such as ammonia, hydrogen, and carbon monoxide. A large amount of ammonia in it dissolves in water, resulting in fluctuations in the liquid level of the water seal tank and generating a large amount of ammonia water. Therefore, the existing ammonia torches usually adopt the anti-backfire method of pipeline flame arrester + speed seal. Due to the high hydrogen content in the discharged torch gas, the pipeline flame arrester needs to be selected according to Class IIC. Limited by the pressure drop and manufacturing size of Class IIC pipeline flame arresters (the maximum specification is DN250), multiple (more than 10) Class IIC pipeline flame arresters need to be installed in parallel for the ammonia torch of large synthetic ammonia plants or ammonia torches supporting other combined plants. This solution has problems such as high investment, complex piping, easy blockage of pipeline flame arresters, and large maintenance workload. Summary of the Utility Model
[0003] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a novel ammonia torch anti-backfire facility.
[0004] The technical solution adopted by the utility model is as follows:
[0005] A novel ammonia torch anti-backfire facility includes an integrated liquid separation and fire arrestor tank. The integrated liquid separation and fire arrestor tank includes a liquid separation functional area and a fire arrestor functional area. The fire arrestor functional area is connected to an ammonia torch through a pipeline. The discharge gas of the synthetic ammonia plant is sent into the liquid separation functional area. The bottom of the liquid separation functional area is connected to a condensate pump for discharging separated waste liquid through a pipeline. A vaporization heating coil is arranged in the liquid separation functional area.
[0006] The liquid separation functional area is provided with a liquid level gauge, thermometer, pressure gauge, etc. with alarm functions. After the high-high liquid level alarm, the condensate pump supporting the integrated liquid separation and fire arrestor tank is manually started to drain the liquid. When the low-low liquid level occurs, the pump is interlocked to stop. The fire arrestor functional area is arranged in the upper part of the liquid separation functional area, at the position of the gas outlet after liquid separation; among them, stainless steel Pall rings of 10mm * 10mm are randomly stacked. The Pall ring packing section can further separate the liquid droplets entrained in the torch gas while realizing the anti-backfire function. The bottom of the integrated liquid separation and fire arrestor tank is provided with a vaporization heating coil for heating and vaporizing the liquid ammonia that may be entrained in the torch gas under special working conditions. The vaporization temperature is controlled by a regulating valve on the heating steam pipeline.
[0007] The utility model optimizes and solves the problems of high investment, complex piping, and heavy maintenance workload of existing ammonia torch flashback prevention facilities. It has the characteristics of high safety, simple and fast implementation, and strong applicability. It can be promoted as a typical implementation method of existing ammonia torch flashback prevention.
[0008] As a preferred solution of the utility model, the liquid separation functional area is a horizontal separation tank, the fire-blocking functional area is connected to the gas phase outlet of the horizontal separation tank, and the liquid phase outlet of the horizontal separation tank is connected to the condensate pump through a pipeline. The tank size of the horizontal separation tank is designed to meet the specification requirement that the particle size of the entrained droplets in the flare gas after separation is less than 600um.
[0009] As a preferred solution of the utility model, the fire-blocking functional area is a dry fire-blocking tower structure, and the dry fire-blocking tower structure is connected to the upper part of the liquid separation functional area.
[0010] As a preferred solution of the utility model, the dry fire-blocking tower structure is provided with a random stack of stainless steel ball rings, the size of which is 10 mm*10 mm.
[0011] As a preferred solution of the utility model, the filling height of the ball ring is not less than 1.6m, so as to achieve the anti-flashback effect of dividing the flame and fully absorbing the combustion heat energy.
[0012] As a preferred embodiment of the utility model, the inlet end of the vaporization heating coil is connected to a heating steam pipe, the outlet end of the vaporization heating coil is connected to a steam condensate pipe, and the heating steam pipe and the steam condensate pipe extend out of the horizontal separation tank.
[0013] As a preferred solution of the utility model, the heating steam pipe is connected with a regulating valve, the horizontal separation tank is connected with a thermometer, and the thermometer is electrically connected to the regulating valve. The vaporization temperature is controlled by the regulating valve on the heating steam pipe.
[0014] As a preferred solution of the utility model, the horizontal separation tank is connected with a liquid level gauge. After the liquid level is high and an alarm is triggered, the condensate pump matched with the integrated liquid separation and fire retardant tank is manually started to drain the liquid, and the pump is interlocked and stopped when the liquid level is low.
[0015] As a preferred solution of the utility model, the horizontal separation tank is connected to a pressure gauge.
[0016] As a preferred solution of the utility model, a pressure transmitter is connected to the dry fire-blocking tower structure.
[0017] The beneficial effects of the utility model are:
[0018] The utility model optimally solves the problems of high investment, complex pipe arrangement, and large maintenance workload of the existing ammonia flare anti-backfire facilities. It has the characteristics of high safety, simple and quick implementation, and strong applicability. It can be promoted as a typical implementation method for the existing ammonia flare anti-backfire. Description of the Drawings
[0019] Figure 1 It is a schematic structural diagram of the utility model.
[0020] In the figure: 1 - horizontal separation tank; 2 - dry fireproof tower structure; 3 - ammonia flare; 4 - condensate pump; 5 - vaporization heating coil; 6 - Pall ring; 11 - thermometer; 12 - liquid level gauge; 13 - pressure gauge; 14 - pressure transmitter; 51 - heating steam pipe; 52 - steam condensate pipe; 53 - regulating valve. Specific Embodiments
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are some but not all of the embodiments of the utility model. Usually, the components of the embodiments of the utility model described and illustrated herein can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts fall within the scope of protection of the utility model. It should be noted that, without conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other.
[0023] As Figure 1 shown, the new ammonia flare anti-backfire facility of this embodiment includes an integrated liquid separation and fireproof tank. The integrated liquid separation and fireproof tank includes a liquid separation functional area and a fireproof functional area. The fireproof functional area is connected to an ammonia flare 3 through a pipeline. The synthesis ammonia plant exhaust gas is sent into the liquid separation functional area. The bottom of the liquid separation functional area is connected to a condensate pump 4 for discharging separated waste liquid through a pipeline, and a vaporization heating coil 5 is arranged in the liquid separation functional area.
[0024] The liquid separation functional area is provided with a liquid level gauge 12 with an alarm function, a thermometer 11, a pressure gauge 13, etc. After the liquid level alarm is high, the condensate pump 4 matched with the integrated liquid separation fire retardant tank is manually started to discharge the liquid, and the pump is interlocked and stopped when the liquid level is low. The fire retardant functional area is set at the upper part of the liquid separation functional area, where the gas outlet is located after the liquid separation; wherein 10mm*10mm stainless steel ball rings 6 are scattered. The ball ring 6 packing section can further separate the droplets entrained in the flare gas while realizing the anti-flashback function. A vaporization heating coil 5 is set at the bottom of the integrated liquid separation fire retardant tank, which is used to heat the liquid ammonia that may be entrained in the vaporized flare gas under special working conditions. The vaporization temperature is controlled by the regulating valve 53 on the heating steam pipe 51 line.
[0025] The utility model optimizes and solves the problems of high investment, complex piping, and heavy maintenance workload of the existing ammonia torch 3 anti-flashback facilities. It has the characteristics of high safety, simple and fast implementation, and strong applicability. It can be promoted as a typical implementation method of the existing ammonia torch 3 anti-flashback.
[0026] The liquid separation functional area is a horizontal separation tank 1, the fire-blocking functional area is connected to the gas phase outlet of the horizontal separation tank 1, and the liquid phase outlet of the horizontal separation tank 1 is connected to the condensate pump 4 through a pipeline. The tank size of the horizontal separation tank 1 is designed to meet the specification requirement that the particle size of the entrained droplets in the flare gas after separation is less than 600um.
[0027] Wherein, the fire-blocking functional area is a dry-type fire-blocking tower structure 2, and the dry-type fire-blocking tower structure 2 is connected to the upper part of the liquid separation functional area.
[0028] The dry fire-blocking tower structure 2 is provided with a random pile of stainless steel ball rings 6. The size of the ball rings 6 is 10 mm*10 mm. The filling height of the ball rings 6 is not less than 1.6 m, so as to achieve the anti-flashback effect of dividing the flame and fully absorbing the combustion heat energy.
[0029] The inlet end of the vaporization heating coil 5 is connected to a heating steam pipe 51 , and the outlet end of the vaporization heating coil 5 is connected to a steam condensate pipe 52 . The heating steam pipe 51 and the steam condensate pipe 52 extend out of the horizontal separation tank 1 .
[0030] Furthermore, the heating steam pipe 51 is connected to a regulating valve 53, the horizontal separation tank 1 is connected to a thermometer 11, and the thermometer 11 is signal-connected to the regulating valve 53. The vaporization temperature is controlled by the regulating valve 53 on the heating steam pipe 51.
[0031] The horizontal separation tank 1 is connected to a liquid level meter 12. After the liquid level is high, the condensate pump 4 matched with the integrated liquid separation fire-retardant tank is manually started to drain the liquid, and the pump is interlocked and stopped when the liquid level is low.
[0032] The horizontal separation tank 1 is connected to a pressure gauge 13 .
[0033] The dry fire-blocking tower structure 2 is connected to a pressure transmitter 14 .
[0034] Example:
[0035] like Figure 1 As shown, the integrated liquid separation fire retardant tank includes a liquid separation functional area, a fire retardant functional area, a vaporization heating coil 5 and matching monitoring instruments. The liquid separation functional area adopts a horizontal separation tank 1, and the tank size is designed to meet the specification requirements that the particle size of the entrained droplets in the flare gas after separation is less than 600um. The liquid separation functional area is equipped with a liquid level gauge 12 with an alarm function, a thermometer 11, a pressure gauge 13, etc. After the high liquid level alarm, the condensate pump 4 matched with the integrated liquid separation fire retardant tank is manually started to drain the liquid, and the pump is interlocked and stopped when the liquid level is low. The fire retardant functional area is set at the upper part of the horizontal separation tank 1, at the position of the gas outlet after liquid separation, and a dry fire retardant tower structure 2 is adopted. The dry fire retardant tower structure 2 is scattered with 10mm*10mm stainless steel ball rings 6. In order to achieve the anti-flashback effect of dividing the flame and fully absorbing the combustion heat energy, the filling height of the ball ring 6 is set to be not less than 1.6m. The ball ring 6 packing section can further separate the liquid droplets entrained in the flare gas while realizing the anti-flashback function. A vaporization heating coil 5 is arranged at the bottom of the integrated liquid separation fire-retardant tank, which is used to heat the liquid ammonia that may be entrained in the vaporized flare gas under special working conditions; the vaporization temperature is controlled by the regulating valve 53 on the heating steam pipe 51.
[0036] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.
Claims
1. A new type of anti-flashback facility for ammonia torches, characterized in that: The invention comprises an integrated liquid separation fire retardant tank, which comprises a liquid separation function area and a fire retardant function area. The fire retardant function area is connected to an ammonia torch (3) via a pipeline. Exhaust gas from a synthetic ammonia device is fed into the liquid separation function area. The bottom of the liquid separation function area is connected to a condensate pump (4) for discharging separation waste liquid via a pipeline. A vaporization heating coil (5) is arranged in the liquid separation function area.
2. A novel ammonia torch anti-backfire facility according to claim 1, characterized in that: The liquid separation functional area is a horizontal separation tank (1), the fire-retardant functional area is connected to the gas phase outlet of the horizontal separation tank (1), and the liquid phase outlet of the horizontal separation tank (1) is connected to the condensate pump (4) through a pipeline.
3. A novel ammonia torch anti-backfire facility according to claim 1, characterized in that: The fire-blocking functional area is a dry-type fire-blocking tower structure (2), and the dry-type fire-blocking tower structure (2) is connected to the upper part of the liquid separation functional area.
4. The novel ammonia torch anti-backfire facility according to claim 3, characterized in that: Ball rings (6) made of stainless steel are randomly stacked in the dry fire-blocking tower structure (2).
5. A novel ammonia torch anti-backfire facility according to claim 4, characterized in that: The filling height of the ball ring (6) is not less than 1.6 m.
6. The novel ammonia torch anti-backfire facility according to claim 2, characterized in that: The inlet end of the vaporizing heating coil (5) is connected to a heating steam pipe (51), and the outlet end of the vaporizing heating coil (5) is connected to a steam condensate pipe (52). The heating steam pipe (51) and the steam condensate pipe (52) extend out of the horizontal separation tank (1).
7. A novel ammonia torch anti-flashback facility according to claim 6, characterized in that: The heating steam pipe (51) is connected to a regulating valve (53), the horizontal separation tank (1) is connected to a thermometer (11), and the thermometer (11) is signal-connected to the regulating valve (53).
8. A novel ammonia torch anti-backfire facility according to claim 2, characterized in that: The horizontal separation tank (1) is connected to a liquid level meter (12).
9. The novel ammonia torch anti-backfire facility according to claim 2, characterized in that: The horizontal separation tank (1) is connected to a pressure gauge (13).
10. A novel ammonia torch anti-backfire facility according to claim 3, characterized in that: The dry fire-blocking tower structure (2) is connected to a pressure transmitter (14).