Condensate discharging device of torch molecule sealer

Abstract

The utility model relates to a condensate drain device of a torch molecule sealer, which is suitable for a torch molecule sealer of a high-pressure torch and a torch molecule sealer of a low-pressure torch, and at least comprises a condensate drain pipe, a condensate drain pipe, a condensate drain pipe, a condensate drain pipe, a condensate drain pipe and a condensate drain pipe, or the low-pressure torch is hermetically connected to a torch molecule sealer liquid outlet of the low-pressure torch, and a pipe orifice at the other end of the low-pressure torch is hermetically connected with a sedimentation system. The sedimentation system comprises a sediment pipe and a U-shaped liquid seal pipe which are communicated with each other, and the sediment pipe is arranged at the bottom of the condensate drain pipe and hermetically connected with the condensate drain pipe. According to the utility model, the condensate drain pipe combining two sets of torch systems into one is changed into independent condensate drain, each set of condensate drain device comprises the condensate drain pipe, the sediment pipe, the U-shaped liquid seal pipe, the reverse blowing process and the like, and the condensate drain pipe and the sediment pipe are vertical pipes, so that impurities such as rust, sludge and the like in the condensate drain pipe naturally sink under the action of gravity and are temporarily stored in the sediment pipe; condensate drainage can be ensured, blockage can be avoided, and the risk caused by high back pressure of the torch is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of petrochemical refining, and in particular relates to a condensate discharge device for a flare molecular sealer. Background Art

[0002] The high altitude flare of the refinery is equipped with a molecular sealer. The main function of the molecular sealer is to prevent the air from flowing back into the flare barrel after the exhaust gas is interrupted, so as to ensure that no backfire or explosion will occur when the gas is discharged again. A DN80 condensate drain pipe is set at the bottom of the molecular sealer. The original design and installation of the DN80 condensate drain pipe of the high and low pressure flare has the following problems:

[0003] In order to take into account the overall installation layout of the pipeline, the outlet of the molecular sealer condensate pipe of the high-pressure flare and the low-pressure flare is connected to a 45° elbow respectively, and the two elbows are respectively connected to a section of slag discharge inclined pipe, and the two slag discharge inclined pipes are finally merged into the DN80 condensate discharge pipe, that is, the molecular sealers of the high-pressure flare and the low-pressure flare share a DN80 condensate discharge pipe, and the slope of the condensate discharge pipe is about 45°. However, impurities such as rust slag can easily be blocked at the elbow and the 45° condensate discharge pipe. When the condensate discharge pipe is blocked, the condensate water of the flare smoke elimination steam accumulates in the molecular sealer and forms a water seal at the molecular sealer, causing the back pressure of the flare system to increase, burying safety hazards. Utility Model Content

[0004] The utility model aims to provide a condensate removal device for a torch molecular sealer to overcome the above technical defects.

[0005] In order to solve the above technical problems, the utility model provides a condensate removal device for a flare molecular sealer, which is applicable to a flare molecular sealer for a high-pressure flare and a flare molecular sealer for a low-pressure flare. The condensate removal device at least comprises:

[0006] The condensate discharge pipe has one end which is sealed and connected to the discharge port of the flare molecular sealer of the high-pressure flare, or is sealed and connected to the discharge port of the flare molecular sealer of the low-pressure flare, and the other end which is sealed and connected to the sedimentation system.

[0007] The condensate drain pipe is a vertical pipe;

[0008] The central axis of the vertical tube is parallel to the central axis of the molecular sealer.

[0009] The drain port of the flare molecular sealer of the high-pressure flare or the drain port of the flare molecular sealer of the low-pressure flare is short-circuited with the condensate drain pipe through a flange.

[0010] According to the flow direction of the medium, a pipeline sight glass is serially connected to the downstream pipe opening of the condensate discharge pipe.

[0011] The sedimentation system comprises:

[0012] The sediment pipe has one end portion sealedly connected to the pipe opening of the condensate discharge pipe, and the other end portion is provided with a quick-opening ball valve.

[0013] A cut-off valve is provided between the pipeline sight glass and the sediment pipe.

[0014] The sedimentation system also includes:

[0015] The U-shaped liquid seal pipe has a downward U-shaped opening, one end of the U-shaped liquid seal pipe extends horizontally to connect to the sediment pipe, and the other end of the U-shaped liquid seal pipe is equipped with a normally open gate valve.

[0016] The condensate removal device of the flare molecular sealer also includes a back-purge unit;

[0017] The back-purge unit comprises a first pipeline and a second pipeline, and the two pipelines are merged into the sediment pipe after merging;

[0018] The first pipeline and the second pipeline are filled with the same or different gases.

[0019] The utility model changes the condensate discharge pipes of two flare systems into an independent condensate discharge pipe. Each condensate discharge device includes a condensate discharge pipe, a sediment pipe, a U-shaped liquid seal pipe, a back-purge process, etc., wherein the condensate discharge pipe and the sediment pipe are both vertical pipes, so that rust, mud and other debris in the condensate discharge pipe naturally sink by gravity and are temporarily stored in the sediment pipe, which can ensure condensate discharge and avoid blockage, reducing the risk caused by high back pressure of the flare.

[0020] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the condensate removal device of the torch molecular sealer.

[0022] Description of reference numerals:

[0023] 10. Condensate drain pipe; 11. Pipeline sight glass; 12. Isolation valve; 13. Sediment pipe; 14. U-shaped liquid seal pipe; 15. Backflush unit;

[0024] 20. Torch molecular sealer for high pressure torch;

[0025] 30. Flare molecular sealer for low pressure flare. DETAILED DESCRIPTION

[0026] The following is an explanation of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] It should be noted that, in the present utility model, the upper, lower, left and right in the figure are regarded as the upper, lower, left and right of the condensate removal device of the torch molecular sealer described in this specification.

[0028] The exemplary embodiments of the present invention are now introduced with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0029] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0030] This embodiment relates to a condensate removal device for a flare molecular sealer, which is applicable to a flare molecular sealer 20 for a high pressure flare and a flare molecular sealer 30 for a low pressure flare. Figure 1 , on the left is a torch molecular sealer 20 of a DN800 high-pressure torch, and on the right is a torch molecular sealer 30 of a DN600 low-pressure torch.

[0031] In the refinery, the DN800 high-pressure flare is the high-pressure venting system of the hydrocracking and hydrogen production units, and the DN600 low-pressure flare is the low-pressure venting system of the catalytic cracking, atmospheric and vacuum distillation, product refining, di-combination, solvent stripping, benzene extraction, sulfur recovery, continuous reforming, diesel hydrogenation, gasoline hydrogenation and other units.

[0032] Continue reading Figure 1 The condensate discharge device at least comprises:

[0033] The condensate discharge pipe 10 has one end which is sealed to the discharge port of the flare molecular sealer of the high pressure flare, or is sealed to the discharge port of the flare molecular sealer of the low pressure flare, and the other end which is sealed to the sedimentation system.

[0034] According to the above description and combined Figure 1 It can be seen that the torch molecular sealer 20 of the high-pressure torch and the torch molecular sealer 30 of the low-pressure torch are both equipped with a torch molecular sealer condensate discharge device (hereinafter referred to as the condensate discharge device), that is, the condensate discharge pipes of the two traditional flare systems are changed into independent condensate discharge pipes, so that rust, mud and other debris in the condensate discharge pipe 10 naturally sink by gravity and are temporarily stored in the sedimentation system. There are no elbows or inclined pipes in the whole process, which solves the blockage problem.

[0035] like Figure 1 As shown, the condensate drain pipe 10 is a vertical pipe, and the central axis of the vertical pipe is parallel to the central axis of the molecular sealer. The design of the vertical pipe solves the problem that impurities such as rust residue are easily blocked at the 45° elbow and the inclined pipe.

[0036] In some embodiments, the drain port of the flare molecular sealer of the high-pressure flare or the drain port of the flare molecular sealer of the low-pressure flare is short-circuited with the condensate drain pipe 10 via a flange to facilitate unblocking during maintenance.

[0037] In some embodiments, a pipe sight glass 11 is connected in series to the downstream pipe opening of the condensate drain pipe 10 according to the flow direction of the medium, and its function is to observe the liquid seal level to prevent the overflow of combustible gas due to the failure of the liquid seal.

[0038] Please continue reading Figure 1 The sedimentation system includes a sedimentation pipe 13, one end of which is sealed and connected to the pipe opening of the condensate discharge pipe 10, and the other end is equipped with a quick-opening ball valve. In some embodiments, the bottom of the condensate discharge pipe 10 is extended by 0.5m of a DN80 sedimentation pipe section, so that rust, mud and other debris in the condensate discharge pipe 10 naturally sink by gravity and are temporarily stored; the bottom of the sedimentation pipe 13 is connected to a DN80 quick-opening ball valve for regular cleaning of rust and debris.

[0039] Reference Figure 1 The sedimentation system also includes: a U-shaped liquid seal pipe 14, whose U-shaped opening is downward, one end of the U-shaped liquid seal pipe 14 extends horizontally to connect to the sediment pipe 13, and the other end of the U-shaped liquid seal pipe 14 is equipped with a normally open gate valve.

[0040] In some embodiments, the U-shaped liquid sealing tube 14 and the sediment tube 13 are integrally formed to ensure sealing performance.

[0041] A 3m high U-shaped liquid seal pipe 14 is installed at the bottom of the condensate discharge pipe 10 to allow the condensate to accumulate here to form a liquid seal. Specifically, the condensate overflows from the DN50 normally open gate valve at the end of the U-shaped liquid seal pipe 14 to the floor drain, achieving the effect of condensate self-drainage.

[0042] In some embodiments, a cut-off valve 12 is provided between the pipeline sight glass 11 and the sediment pipe 13, and its function is to facilitate temporary maintenance and isolation of the U-shaped liquid seal pipe.

[0043] In some embodiments, from top to bottom are the drain port of the molecular sealer, the flange short circuit, the condensate drain pipe 10, the pipe sight glass 11, the isolation valve 12, and the sediment pipe 13, and the aforementioned pipes are vertical pipes, or the components are on the same axial center line, the purpose is to ensure that rust, mud and other debris naturally sink by gravity and are temporarily stored in the sediment pipe 13.

[0044] Please continue reading Figure 1The flare molecular sealer condensate removal device further includes a back-purge unit 15. Specifically, the back-purge unit 15 includes a first pipeline and a second pipeline. The two pipelines are merged into the sediment pipe 13 after merging. The first pipeline and the second pipeline are connected with the same or different gases.

[0045] In some embodiments, Figure 1 As shown, nitrogen is passed through the first pipeline and steam is passed through the second pipeline. The two nitrogen and steam are sprayed into the sediment pipe 13 after mixing, or one of the gases is sprayed into the sediment pipe 13 alone, and finally sprayed into the condensate discharge pipe 10, and the condensate discharge pipe 10 is regularly back-blown and blocked.

[0046] according to Figure 1 It can be seen that the condensate discharge device has no elbows or inclined pipes, and thus there is no blockage problem. There will be no liquid seal formed in the molecular sealer due to poor condensate discharge. Moreover, the two sets of condensate discharge devices work independently without affecting each other, reducing the probability of blockage of the condensate discharge pipe and the risk caused by high flare back pressure.

[0047] The above-mentioned condensate removal device of the flare molecular sealer was installed on the flare and put into operation. It was found that the condensate removal device of the flare molecular sealer completely solved the problem of easy blockage of the condensate removal pipe, especially eliminated the hidden danger of freezing and blockage in the flare molecular sealer in extremely cold weather in winter.

[0048] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A condensate removal device for a flare molecular sealer, suitable for a flare molecular sealer (20) for a high-pressure flare and a flare molecular sealer (30) for a low-pressure flare, characterized in that: The condensate discharge device at least comprises: The condensate discharge pipe (10) has one end which is sealedly connected to the discharge port of the flare molecular sealer of the high-pressure flare, or is sealedly connected to the discharge port of the flare molecular sealer of the low-pressure flare, and the other end which is sealedly connected to a sedimentation system.

2. The condensate removal device of the torch molecular sealer according to claim 1, characterized in that: The condensate drain pipe (10) is a vertical pipe; The central axis of the vertical tube is parallel to the central axis of the molecular seal.

3. The condensate removal device of the torch molecular sealer according to claim 1 or 2, characterized in that: The liquid discharge port of the flare molecular sealer of the high-pressure flare or the liquid discharge port of the flare molecular sealer of the low-pressure flare is short-circuited with the condensate discharge pipe (10) via a flange.

4. The condensate removal device of the torch molecular sealer according to claim 1, characterized in that: According to the flow direction of the medium, a pipeline sight glass (11) is connected in series to the downstream pipe opening of the condensate discharge pipe (10).

5. The condensate removal device of the torch molecular sealer according to claim 4, characterized in that: The sedimentation system comprises: The sediment pipe (13) has one end sealedly connected to the pipe opening of the condensate discharge pipe (10), and the other end is equipped with a quick-opening ball valve.

6. The condensate removal device of the torch molecular sealer according to claim 5, characterized in that: A cut-off valve (12) is provided between the pipeline sight glass (11) and the sediment pipe (13).

7. The condensate removal device of the torch molecular sealer according to claim 5 or 6, characterized in that: The sedimentation system also includes: The U-shaped liquid seal pipe (14) has a downward U-shaped opening, one end of the U-shaped liquid seal pipe (14) extends horizontally to connect to the sediment pipe (13), and the other end of the U-shaped liquid seal pipe (14) is equipped with a normally open gate valve.

8. The condensate removal device of the torch molecular sealer according to claim 5 or 6, characterized in that: Also includes a back-purge unit (15); The back-sweeping unit (15) comprises a first pipeline and a second pipeline, and the two pipelines are merged into the sediment pipe (13) after merging; The first pipeline and the second pipeline are filled with the same or different gases.

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