Vacuum exhaust system of anthracene tower

Abstract

The utility model relates to an anthracene tower vacuum exhaust system which comprises an anthracene tower, a top vacuum exhaust hole of the anthracene tower is connected with an air suction port of a liquid ring vacuum pump through an exhaust pipe I, the liquid ring vacuum pump comprises a liquid ring vacuum pump and a vapor-liquid separation tank, and an exhaust port of the liquid ring vacuum pump is connected with a tail gas main pipe through an exhaust pipe II; a valve pipe connector is arranged on the first exhaust pipe and connected with an oil washing barrel, a slag discharging opening is formed in the bottom of the side wall of the vapor-liquid separation tank, a sealing cover is connected to the slag discharging opening, an oil discharging connector is connected to the sealing cover, a liquid supplementing opening is formed in the portion, between the liquid ring vacuum pump and the vapor-liquid separation tank, of the liquid supply pipe, and a steam pipeline is detachably connected to the liquid supplementing opening. And an on-off valve is arranged on the exhaust pipe II. According to the utility model, impurities in the liquid of the liquid ring vacuum pump can be discharged without stopping production, and the stable operation of the vacuum pump is ensured. And when production is stopped, the vacuum pipeline can be purged, and impurities in the vapor-liquid separation tank can be thoroughly cleaned.

Description

Technical Field

[0001] The utility model relates to tar distillation equipment, in particular to an anthracene tower vacuum exhaust system. Background Art

[0002] The products of tar distillation include tar fore fraction, phenol oil, naphthalene oil, washing oil, anthracene oil, anthracene oil fraction and medium-temperature asphalt. Anthracene oil, washing oil and anthracene oil fraction are distilled in anthracene tower, which uses vacuum pumping to reduce energy. The stable operation of the vacuum pump is very important for the continuous operation of the distillation process and the quality compliance. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an anthracene tower vacuum exhaust system to solve the problem of unstable operation of the anthracene tower vacuum exhaust.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An anthracene tower vacuum exhaust system comprises an anthracene tower, wherein a vacuum exhaust hole at the top of the anthracene tower is connected to an air intake port of a liquid ring vacuum pump through an exhaust pipe 1, the liquid ring vacuum pump comprises a liquid ring vacuum pump and a vapor-liquid separation tank, the exhaust port of the liquid ring vacuum pump is connected to an exhaust main pipe through an exhaust pipe 2, the exhaust pipe 1 is provided with a valve pipe joint, the valve pipe joint is connected to an oil washing barrel, a slag discharge port is provided at the bottom of a side wall of the vapor-liquid separation tank, a sealing cover is connected to the slag discharge port, an oil discharge joint is connected to the sealing cover, a liquid replenishing port is provided on a liquid supply pipe between the liquid ring vacuum pump and the vapor-liquid separation tank, the liquid replenishing port is disassembled and connected to a steam pipeline, and an opening and closing valve is provided on the exhaust pipe 2.

[0006] The valve pipe joint is a ball valve pipe joint.

[0007] The valve pipe joint is connected to the oil washing barrel through a hose, one end of the hose is detachably connected to the valve pipe joint, and the other end is inserted into the oil washing barrel.

[0008] The slag discharge port is a round hole or a square hole with a diameter of 150-200 mm.

[0009] The pipe opening height of the liquid supply pipe on the vapor-liquid separation tank is higher than the slag discharge opening.

[0010] Compared with the existing technology, the beneficial effects of the utility model are:

[0011] The utility model can discharge impurities in the liquid of the liquid ring vacuum pump without stopping production, thereby ensuring stable operation of the vacuum pump. When stopping production, the vacuum pipeline can be purged to thoroughly clean the impurities in the vapor-liquid separation tank. The number of vacuum pump maintenance times during the production cycle is greatly reduced, ensuring long-term stable operation of the distillation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model.

[0013] Figure 2 This is a partial schematic diagram of the vapor-liquid separation tank.

[0014] In the figure: anthracene tower 1, exhaust pipe 1 2, liquid ring vacuum pump 3, vapor-liquid separation tank 4, exhaust pipe 2 5, tail gas main pipe 6, valve pipe joint 7, oil washing barrel 8, slag discharge port 9, sealing cover 10, oil discharge joint 11, opening and closing valve 12, liquid supply pipe 13, liquid replenishment port 14, steam pipe 15, hose 16. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means more than two.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0017] An anthracene tower vacuum exhaust system comprises an anthracene tower 1, wherein the top vacuum exhaust hole of the anthracene tower 1 is connected to the air intake port of a liquid ring vacuum pump through an exhaust pipe 2, the liquid ring vacuum pump comprises a liquid ring vacuum pump 3 and a vapor-liquid separation tank 4, the exhaust port of the liquid ring vacuum pump is connected to an exhaust main pipe 6 through an exhaust pipe 5, the exhaust pipe 2 is provided with a valve pipe joint 7, the valve pipe joint 7 is connected to an oil washing barrel 8, a slag discharge port 9 is provided at the bottom of the side wall of the vapor-liquid separation tank 4, a sealing cover 10 is connected to the slag discharge port 9, and an oil discharge joint 11 is connected to the sealing cover 10, a liquid replenishment port 14 is provided on a liquid supply pipe 13 between the liquid ring vacuum pump 3 and the vapor-liquid separation tank 4, a steam pipeline 15 is disassembled and connected to the liquid replenishment port 14, and an opening and closing valve 12 is provided on the exhaust pipe 5.

[0018] The valve pipe joint 7 is a ball valve pipe joint.

[0019] The valve pipe joint 7 is connected to the oil washing barrel 8 through a hose 16 , one end of the hose 16 is detachably connected to the valve pipe joint 7 , and the other end is inserted into the oil washing barrel 8 .

[0020] The slag discharge port 9 is a round hole or a square hole with a diameter of 150-200 mm.

[0021] The pipe opening height of the liquid supply pipe 13 on the vapor-liquid separation tank 4 is higher than the slag discharge port 9, so that the slag accumulated in the vapor-liquid separation tank 4 cannot enter the interior of the vacuum pump.

[0022] The system sucks new wash oil into the exhaust pipe 2 along with negative pressure through the valve pipe joint 7 to flush the accumulated slag in the pipe. The washed oil enters the vapor-liquid separation tank 4 after flushing, and the wash oil containing impurities at the bottom of the vapor-liquid separation tank 4 is discharged from the oil drain joint 11, thereby achieving the purpose of replacing the liquid ring wash oil.

[0023] The slag discharge port of the vapor-liquid separation tank 4 is cleaned regularly to remove accumulated slag.

[0024] When production is stopped, the on-off valve 12 is closed, steam is introduced from the liquid replenishing port 14, and the steam enters the anthracene tower through the exhaust pipe 2 to achieve purging of the pipeline from the anthracene tower to the vacuum pump.

[0025] In order to make the purpose, technical scheme and technical effect of the utility model clearer, the technical scheme in the embodiment of the utility model is now described clearly and completely. However, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. In combination with the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] An anthracene tower vacuum exhaust system comprises an anthracene tower 1, wherein the top vacuum exhaust hole of the anthracene tower 1 is connected to the air intake port of a liquid ring vacuum pump via an exhaust pipe 2, the liquid ring vacuum pump comprises a liquid ring vacuum pump 3 and a vapor-liquid separation tank 4, the exhaust port of the liquid ring vacuum pump is connected to an exhaust main pipe 6 via an exhaust pipe 5, a ball valve pipe joint is provided on the exhaust pipe 2, the ball valve pipe joint is connected to an oil washing barrel 8 via a hose 16, one end of the hose 16 is detachably connected to the valve pipe joint 7, and the other end is inserted into the oil washing barrel 8.

[0027] A slag discharge port 9 is provided at the bottom of the side wall of the vapor-liquid separation tank 4. The slag discharge port 9 is a round hole with a diameter of 150 mm. The bolts on the slag discharge port 9 are disassembled and connected to the cover 10. The cover 10 is connected to the oil drain joint 11. A liquid replenishment port 14 is provided on the liquid supply pipe 13 between the liquid ring vacuum pump 3 and the vapor-liquid separation tank 4. The liquid replenishment port 14 is disassembled and connected to the steam pipe 15. The pipe mouth height of the liquid supply pipe 13 on the vapor-liquid separation tank 4 is higher than the slag discharge port 9.

[0028] An on-off valve 12 is provided on the exhaust pipe 25. Example

[0029] An anthracene tower vacuum exhaust system comprises an anthracene tower 1, wherein the top vacuum exhaust hole of the anthracene tower 1 is connected to the air intake port of a liquid ring vacuum pump via an exhaust pipe 2, the liquid ring vacuum pump comprises a liquid ring vacuum pump 3 and a vapor-liquid separation tank 4, the exhaust port of the liquid ring vacuum pump is connected to an exhaust main pipe 6 via an exhaust pipe 5, a ball valve pipe joint is provided on the exhaust pipe 2, the ball valve pipe joint is connected to an oil washing barrel 8 via a hose 16, one end of the hose 16 is detachably connected to the valve pipe joint 7, and the other end is inserted into the oil washing barrel 8.

[0030] A slag discharge port 9 is provided at the bottom of the side wall of the vapor-liquid separation tank 4. The slag discharge port 9 is a square hole with a diameter of 180 mm. The bolts on the slag discharge port 9 are disassembled and connected to the cover 10. The cover 10 is connected to the oil drain joint 11. A liquid replenishment port 14 is provided on the liquid supply pipe 13 between the liquid ring vacuum pump 3 and the vapor-liquid separation tank 4. The liquid replenishment port 14 is disassembled and connected to the steam pipe 15. The pipe mouth height of the liquid supply pipe 13 on the vapor-liquid separation tank 4 is higher than the slag discharge port 9.

[0031] An on-off valve 12 is provided on the exhaust pipe 25.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and basic spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anthracene tower vacuum exhaust system, characterized in that: The invention comprises an anthracene tower, wherein the vacuum exhaust hole on the top of the anthracene tower is connected with the air intake port of the liquid ring vacuum pump through an exhaust pipe 1, the liquid ring vacuum pump comprises a liquid ring vacuum pump and a vapor-liquid separation tank, the exhaust port of the liquid ring vacuum pump is connected with the tail gas main pipe through an exhaust pipe 2, the exhaust pipe 1 is provided with a valve pipe joint, the valve pipe joint is connected with the oil washing barrel, a slag discharge port is provided at the bottom of the side wall of the vapor-liquid separation tank, a sealing cover is connected to the slag discharge port, the sealing cover is connected to the oil discharge joint, a liquid replenishing port is provided on the liquid supply pipe between the liquid ring vacuum pump and the vapor-liquid separation tank, the liquid replenishing port is disassembled and connected with a steam pipeline, and an opening and closing valve is provided on the exhaust pipe 2.

2. The anthracene tower vacuum exhaust system according to claim 1, characterized in that: The valve pipe joint is a ball valve pipe joint.

3. The anthracene tower vacuum exhaust system according to claim 1, characterized in that: The valve pipe joint is connected to the oil washing barrel through a hose, one end of the hose is detachably connected to the valve pipe joint, and the other end is inserted into the oil washing barrel.

4. The anthracene tower vacuum exhaust system according to claim 1, characterized in that: The slag discharge port is a round hole or a square hole with a diameter of 150-200 mm.

5. The anthracene tower vacuum exhaust system according to claim 1, characterized in that: The pipe opening height of the liquid supply pipe on the vapor-liquid separation tank is higher than the slag discharge opening.

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