Activated coke regeneration tower pressure detection system and pressure detection device

Abstract

The present invention relates to the field of activated coke regeneration, and specifically to an activated coke regeneration tower pressure detection system and a pressure detection device, wherein the activated coke regeneration tower pressure detection system includes an activated coke regeneration tower and a pressure detection device; the pressure detection device includes a connecting pipe, a pressure detection device and a purge device; the connecting pipe has a first branch, a second branch, a third branch and a fourth branch; the first branch is connected to the inside of the activated coke regeneration tower and the end of the first branch is located at a pressure point to be measured; the second branch is connected to the pressure detection device, and the pressure detection device is used to detect pressure; the third branch is connected to the purge device to allow purge gas to be introduced into the connecting pipe; the end of the fourth branch is in an open state for sewage discharge. The present invention provides an activated coke regeneration tower pressure detection system and a pressure detection device with accurate and reliable pressure detection, stability and long service life, which has very significant promotion significance.

Description

Technical Field

[0001] The invention relates to the field of activated coke regeneration, and in particular to an activated coke regeneration tower pressure detection system and a pressure detection device. Background Art

[0002] Activated coke flue gas purification technology uses the strong adsorption function of activated coke to treat pollutants in flue gas, and can remove multiple pollutants at the same time. The activated coke after treating the flue gas needs to be heated up in a regeneration tower for desorption and regeneration to achieve the reuse of the activated coke.

[0003] The upper and lower parts of the regeneration tower are filled with nitrogen, and the middle part is indirectly heated to the required temperature (400-450°C) by high-temperature circulating hot gas to desorb and regenerate the activated coke. Nitrogen plugging is set at the upper and lower parts of the regeneration tower to effectively prevent the regeneration gas desorbed in the middle of the regeneration tower from flowing back and avoid corrosion of the components inside the tower; the exhaust section is set in the middle to extract the desorbed regeneration gas in time and restore the activity of the activated coke. Therefore, in order to intuitively reflect the pressure state in the tower, it is particularly important to effectively arrange and accurately detect the pressure detection points of the regeneration tower.

[0004] Since the regeneration tower is a high-temperature area, there is a problem in the process that once the regenerator is damaged, air or hot flue gas containing excess oxygen will directly contact the high-temperature activated coke, which may cause the activated coke to spontaneously ignite. Therefore, the usual pressure detection method will cause corrosion and damage to the root casing after the device has been running for a period of time. This detection has major defects and will cause serious consequences.

[0005] There is no structure in the prior art that can reasonably, effectively and accurately detect the pressure inside the activated coke regeneration tower, and it is necessary to solve this problem. Summary of the invention

[0006] In view of the problems in the background technology, one of the objects of the present invention is to provide an activated coke regeneration tower pressure detection system with accurate, reliable, stable and long service life; another object of the present invention is to provide a pressure detection device.

[0007] In order to achieve the above object, the present invention provides an activated coke regeneration tower pressure detection system on one hand, and the technical solution adopted is as follows:

[0008] Activated coke regeneration tower pressure detection system, including:

[0009] Active coke regeneration tower and pressure detection device;

[0010] The pressure detection device includes a connecting pipe, a pressure detection device and a purge device;

[0011] The connecting pipe has a first branch, a second branch, a third branch and a fourth branch;

[0012] The first branch is connected to the interior of the activated coke regeneration tower and the end of the first branch is located at a pressure point to be measured;

[0013] The second branch is connected to the pressure detection device, and the pressure detection device is used to detect pressure;

[0014] The third branch is connected to the purge device to allow purge gas to flow into the connecting pipe;

[0015] The end of the fourth branch is in an open state for sewage discharge;

[0016] Each branch of the connecting pipe is provided with a control valve to control on and off.

[0017] In some embodiments, the activated coke regeneration tower includes a feed section, a heating section, a cooling section, and a discharge section;

[0018] The transition point between the feeding section and the heating section is the first pressure detection point;

[0019] The transition point between the heating section and the cooling section is a second pressure detection point;

[0020] The transition point between the cooling section and the discharging section is the third pressure detection point;

[0021] The pressure detection devices are provided in three groups, and the ends of the first branches of the three groups of pressure detection devices are respectively arranged at the first pressure detection point, the second pressure detection point, and the third pressure detection point.

[0022] In some embodiments, the third branches of the three groups of pressure detection devices are connected to the same gas supply mother pipe and are connected to the same purge device through the gas supply mother pipe.

[0023] In some embodiments, the first branch extends into the interior of the activated coke regeneration tower at an inclination angle of 30° to 60° relative to the horizontal plane;

[0024] An end of the first branch located inside the activated coke regeneration tower is lower than an end of the first branch located outside the activated coke regeneration tower;

[0025] The end of the first branch located inside the activated coke regeneration tower is provided with an inclined section with an angle of 30° to 60°, and the inclined section faces the bottom of the activated coke regeneration tower.

[0026] In some embodiments, the purge device includes a heating device, and the heating device is disposed on the third branch to heat the purge gas introduced into the third branch.

[0027] In some embodiments, an anti-blocking device is provided on the first branch to prevent the first branch from being blocked;

[0028] The anti-blocking device is arranged outside the activated coke regeneration tower and is detachably connected to the first branch.

[0029] In some embodiments, the anti-blocking device

[0030] And / or the outer wall of the connecting pipe is provided with a detachable heat-insulating structure;

[0031] The thermal insulation structure is one of thermal insulation cotton plus an outer protective plate, electric heating, and steam heating.

[0032] In some embodiments, an instrument incubator is also included;

[0033] The pressure detection device is a pressure transmitter and is arranged in the instrument insulation box.

[0034] In some embodiments, the control valve is a solenoid valve or a manual valve.

[0035] On the other hand, the present invention also provides a pressure detection device, comprising:

[0036] Connecting pipe, pressure detection equipment and purge device;

[0037] The connecting pipe has a first branch, a second branch, a third branch and a fourth branch;

[0038] The first branch is used to collect the gas to be pressure-measured;

[0039] The second branch is connected to the pressure detection device, and the pressure detection device is used to detect pressure;

[0040] The third branch is connected to the purge device to allow purge gas to flow into the connecting pipe;

[0041] The end of the fourth branch is in an open state for sewage discharge;

[0042] Each branch of the connecting pipe is provided with a control valve to control on and off.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. An activated coke regeneration tower pressure detection system provided by the present invention adopts a connecting pipe to be respectively connected to the inside of the regeneration tower, the pressure detection equipment and the purge device, and an open end is reserved, which can not only realize the rapid measurement of the internal pressure of the activated coke regeneration tower, but also can purge the inside of the connecting pipe through the purge device to avoid blockage and corrosion of the pipeline, and prevent coke powder from entering external equipment such as the pressure detection equipment, thereby ensuring the reliability of pressure detection.

[0045] 2. The present invention provides an activated coke regeneration tower pressure detection system, which respectively sets pressure detection points at the transition between the feed section and the heating section, the transition between the heating section and the cooling section, and the transition between the cooling section and the discharge section of the regeneration tower, thereby effectively ensuring the stable operation of the activated coke regeneration tower and having a safety effect far superior to the prior art.

[0046] 3. In the active coke regeneration tower pressure detection system provided by the present invention, the first branch extends into the active coke regeneration tower at an inclination angle of 30° to 60° relative to the horizontal plane, and the end of the first branch located inside the active coke regeneration tower is provided with an inclined section of 30° to 60° and the inclined section faces the bottom of the active coke regeneration tower, which is more conducive to taking pressure in the tower and can also effectively prevent the coke material and coke ash in the regeneration tower from accumulating in the connecting pipe.

[0047] 4. In the activated coke regeneration tower pressure detection system provided by the present invention, the anti-blocking device, heater, outer wall of the connecting pipe, pressure transmitter and other structures can be provided with a thermal insulation structure on the outside to avoid corrosion and blockage of the pressure taking device caused by condensation due to the large temperature difference between the external environment or the purge gas and the regeneration tower, and can also further improve the accuracy of pressure detection.

[0048] 5. The pressure detection device provided by the present invention includes a connecting pipe, a pressure detection device and a purge device, which can not only quickly and accurately measure the pressure inside the activated coke regeneration tower, but also can be flexibly applied between multiple or different activated coke regeneration towers, with significant economic benefits.

[0049] In summary, the present invention is ingeniously designed and novel in structure, and provides an activated coke regeneration tower pressure detection system and pressure detection device with accurate, reliable, stable and long-life pressure detection, which has very significant promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0051] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present invention;

[0052] Figure 2 yes Figure 1 A magnified view of the structure at center;

[0053] Figure 3 It is a schematic diagram of the position of the first branch extending into the interior of the regeneration tower in the present invention.

[0054] Description of Figure Numbers:

[0055] Activated coke regeneration tower 100, feeding section 101, heating section 102, cooling section 103, discharging section 104;

[0056] Connecting pipe 200, first branch 201, second branch 202, third branch 203, fourth branch 204;

[0057] Pressure detection equipment 300;

[0058] A purge device 400 and a heating device 401;

[0059] Control valve 500;

[0060] Anti-blocking device 600;

[0061] Instrument insulation box 700. DETAILED DESCRIPTION

[0062] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0063] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0064] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0065] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 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 according to specific circumstances.

[0066] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0067] Example I

[0068] refer to Figure 1 and Figure 2 The specific implementation of the pressure detection system of an activated coke regeneration tower 100 involved in the present invention is specifically described, including an activated coke regeneration tower 100 and a pressure detection device, wherein the pressure detection device further specifically includes a connecting pipe 200, a pressure detection device 300 and a purge device 400. The connecting pipe 200 includes a first branch 201, a second branch 202, a third branch 203 and a fourth branch 204. For example, the connecting pipe 200 can be specifically configured as a four-way pipe, the first branch 201 is connected to the inside of the activated coke regeneration tower 100 and the end of the first branch 201 is located at the pressure point to be measured, which is used to collect gas samples at the pressure point; the pressure detection device 300 is connected to the second branch 202 and is used to detect the internal gas pressure of the activated coke regeneration tower 100. The gas inside the activated coke regeneration tower 100 passes through the first branch 201 and then through the second branch 202 to enter the pressure detection device 300 and obtain a specific pressure value; the third branch 203 is connected to the purge device 400, and the purge device 400 is used to pass the purge gas into the connecting pipe 200; the end of the fourth branch 204 of the connecting pipe 200 is in an open state and used as a sewage pipe. A control valve 500 is provided on each branch of the connecting pipe 200 to control the on-off. According to the cooperation between different control valves 500, the pressure detection system of an activated coke regeneration tower 100 involved in this embodiment can have the following states:

[0069] 1. Pressure detection status;

[0070] Close the control valve 500 on the third branch 203 and the fourth branch 204, and open the control valve 500 on the first branch 201 and the second branch 202. An airflow passage is formed between the first branch 201 and the second branch 202. The gas inside the activated coke regeneration tower 100 enters the pressure detection device 300 connected to the second branch 202 through the airflow passage, and the specific pressure value of the gas inside the activated coke regeneration tower 100 can be obtained.

[0071] 2. First purge state;

[0072] The control valves 500 on the first branch 201 and the second branch 202 are closed, and the control valves 500 on the third branch 203 and the fourth branch 204 are opened. The purge device 400 connected to the third branch 203 purges gas into the connecting pipe 200, and the fourth branch 204 acts as a sewage pipe to discharge this part of the gas. After a certain period of time, the impurity gas in the connecting pipe 200 is cleared and only the purge gas remains to fill the entire connecting pipe 200.

[0073] 3. Second purge state;

[0074] Close the control valves 500 on the second branch 202 and the fourth branch 204, open the control valves 500 on the first branch 201 and the third branch 203, and the purge device 400 connected to the third branch 203 purges gas into the connecting pipe 200 and passes it into the interior of the activated coke regeneration tower 100 through the first branch 201, which can effectively remove the impurity gas and coke powder in the first branch 201, avoid blockage and corrosion of the first branch 201, and further ensure the accuracy of the pressure test.

[0075] It should be noted that the activated coke regeneration tower 100 is undergoing a high-temperature desorption process of the activated coke, so the gas introduced into the tower should not contain oxygen to prevent the activated coke from undergoing a combustion reaction under the conditions of oxygen and high temperature. Nitrogen or other non-combustible gases or inert gases may be used. Before entering the second purge state, the first purge state must be passed and maintained for a sufficient period of time to more fully remove the oxygen in the connecting pipe 200 and avoid potential safety hazards. In addition, a connecting pipe 200 involved in this embodiment can also be configured to have a fifth branch or a sixth branch to connect more equipment such as gas composition detection equipment, branch purge devices, etc., to improve the efficiency of gas extraction and exhaust.

[0076] An activated coke regeneration tower 100 pressure detection system provided in this embodiment connects the activated coke regeneration tower 100, the pressure detection equipment 300 and the purge device 400 respectively through a cleverly arranged four-way pipe. It can not only flexibly realize the switching of various working states and improve the efficiency and accuracy of the internal air pressure detection of the activated coke regeneration tower 100; at the same time, it has a simple structure, is easy to prepare and has good scalability.

[0077] In some embodiments, the aforementioned pressure detection device is preferably configured to have three groups, the purpose of which is to detect three preset pressure detection points inside the activated coke regeneration tower 100. Generally speaking, the activated coke regeneration tower 100 includes a feed section 101, a heating section 102, a cooling section 103 and a discharge section 104, which are different working stages of the activated coke desorption process, respectively. The transition point between the feed section 101 and the heating section 102 is set as the first pressure detection point; the transition point between the heating section 102 and the cooling section 103 is set as the second pressure detection point; the transition point between the cooling section 103 and the discharge section 104 is set as the third pressure detection point; the ends of the first branch 201 of the three groups of pressure detection devices are respectively set at the first pressure detection point, the second pressure detection point, and the third pressure detection point. The setting of the above three pressure detection points is crucial to the operation and maintenance of the regeneration system, and can effectively ensure the stable operation of the regeneration tower. Of course, in some other variant embodiments, the pressure detection device can also be preferably configured with two groups, four groups or five groups, etc., determined according to the number of pressure detection points actually required. As a further preference, in some of the modified embodiments, the third branches 203 of the three groups of pressure detection devices can also be connected to the same air supply mother pipe and connected to the same purge device 400 through the air supply mother pipe, which has further structural simplicity.

[0078] In some embodiments, the first branch 201 preferably extends into the interior of the activated coke regeneration tower 100 at an inclination angle of 30° to 60° relative to the horizontal plane, and the end of the first branch 201 located inside the activated coke regeneration tower 100 is lower than the end located outside the activated coke regeneration tower 100. This inclined structure can effectively prevent the active coke material and coke powder from gathering at the intersection of the first branch 201 and the activated coke regeneration tower 100. As a further preference, the end of the first branch 201 located inside the activated coke regeneration tower 100 is provided with an inclined section of 30° to 60°, and the inclined section faces the bottom of the activated coke regeneration tower 100, which can generate a local cavity below the end of the first branch 201, which is more conducive to taking pressure inside the tower, and can also effectively prevent the accumulation of coke material and coke ash in the first branch 201. It should also be noted that intermittently arranged active coke delivery pipes are provided between the various parts of the active coke regeneration tower 100. The first branch 201 is preferably provided at one end inside the active coke regeneration tower 100 between the active coke delivery pipes and at a position H = 100 mm to 200 mm above the end of the active coke delivery pipes. Figure 3 As shown, this structure can effectively reduce the blockage at the end of the first branch 201.

[0079] On the basis of all the aforementioned embodiments, a heating device 401 can be preferably provided on the third branch 203 to heat the purge gas introduced into the third branch 203. Since the temperature in the activated coke regeneration tower 100 is relatively high, when the purge gas is introduced into the regeneration tower through the purge device 400, the purge gas needs to be heated first to avoid potential safety hazards, and the purge gas is preferably an inert gas that is not easy to burn. For example, in the embodiment where nitrogen is used as the purge gas, generally, the heating temperature of the purge nitrogen by the electric heater is preferably within 110°C to 130°C. Optionally, the electric heater used to heat the purge gas in this embodiment can also be replaced by other heating methods such as a steam heater.

[0080] In some embodiments, the first branch 201 is preferably provided with an anti-blocking device 600 to avoid blocking of the first branch 201. The anti-blocking device 600 can specifically adopt an anti-blocking wind pressure detection device in the prior art. The anti-blocking device 600 is arranged outside the activated coke regeneration tower 100 and is detachably connected to the first branch 201 through a flange, which is convenient for installation and removal. As a further preference, the anti-blocking device 600 can be arranged inside the insulation structure. The insulation structure can effectively avoid corrosion at the connection between the first branch 201 and the regeneration tower caused by condensation. Corrosion at this position will cause great harm to the activated coke regeneration system. Because the temperature of the regeneration tower is high during operation (the temperature of the activated coke heating section 102 can reach 400°C), the corroded position will cause air to enter the regeneration tower, and there is a risk of activated coke ignition. Furthermore, the outer wall of the connecting pipe 200 can also be provided with an insulation structure to prevent the connecting pipe 200 from corroding and causing air or coke powder to enter the connecting pipe 200, thereby ensuring the reliability of pressure detection. The thermal insulation structure described in this embodiment includes, but is not limited to, one of thermal insulation cotton plus an outer protective plate, electric heating, and steam heating.

[0081] On the basis of all the aforementioned embodiments, the pressure detection device 300 involved therein can be specifically set as a pressure transmitter; further comprising an instrument insulation box 700, in an environment where the temperature may reach -10°C or there is corrosive dust, the pressure transmitter is placed in the instrument insulation box 700, which can effectively avoid the distortion of the pressure transmitter detection. The control valve 500 can be a solenoid valve or a manual valve, which can be flexibly selected according to the specific working environment.

[0082] Example II

[0083] As another aspect of the present invention, a pressure detection device is provided in the present embodiment, including a connecting pipe 200, a pressure detection device 300 and a purge device 400; the connecting pipe 200 has a first branch 201, a second branch 202, a third branch 203 and a fourth branch 204; the first branch 201 is used to collect the gas to be measured; the second branch 202 is connected to the pressure detection device 300, and the pressure detection device 300 is used to detect pressure; the third branch 203 is connected to the purge device 400 to allow purge gas to be introduced into the connecting pipe 200; the end of the fourth branch 204 is in an open state; a control valve 500 is provided on each branch of the connecting pipe 200 to control the on and off.

[0084] The pressure detection device provided in this embodiment can not only realize the rapid measurement of the internal pressure of the activated coke regeneration tower 100, but also can purge the inside of the connecting pipe 200 through the purge device 400 to avoid the blockage and corrosion of the pipeline, and prevent the coke powder from entering the external equipment such as the pressure detection device 300. In addition, it also has the technical effect of flexible use in terms of disassembly.

[0085] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Activated coke regeneration tower pressure detection system, characterized in that: include: Active coke regeneration tower and pressure detection device; The pressure detection device includes a connecting pipe, a pressure detection device and a purge device; The connecting pipe has a first branch, a second branch, a third branch and a fourth branch; The first branch is connected to the inside of the activated coke regeneration tower and the end of the first branch is located at the pressure point to be measured; the end of the first branch located inside the activated coke regeneration tower is lower than the end of the first branch located outside the activated coke regeneration tower; The activated coke regeneration tower includes a feed section, a heating section, a cooling section and a discharge section. The transition between the feed section and the heating section is a first pressure detection point, the transition between the heating section and the cooling section is a second pressure detection point, and the transition between the cooling section and the discharge section is a third pressure detection point. The pressure detection devices are provided in three groups, and the ends of the first branches of the three groups of pressure detection devices are respectively provided at the first pressure detection point, the second pressure detection point, and the third pressure detection point; The second branch is connected to the pressure detection device, and the pressure detection device is used to detect pressure; The third branch is connected to the purge device to allow purge gas to flow into the connecting pipe; The end of the fourth branch is in an open state for sewage discharge; Each branch of the connecting pipe is provided with a control valve to control on and off.

2. The activated coke regeneration tower pressure detection system according to claim 1, characterized in that: The third branches of the three groups of pressure detection devices are connected to the same gas supply mother pipe and are connected to the same purge device through the gas supply mother pipe.

3. The activated coke regeneration tower pressure detection system according to claim 1, characterized in that: The first branch extends into the interior of the activated coke regeneration tower at an inclination angle of 30° to 60° relative to the horizontal plane; The end of the first branch located inside the activated coke regeneration tower is provided with an inclined section with an angle of 30° to 60°, and the inclined section faces the bottom of the activated coke regeneration tower.

4. The activated coke regeneration tower pressure detection system according to claim 1, characterized in that: The purge device comprises a heating device, which is arranged on the third branch and is used for heating the purge gas introduced into the third branch.

5. The activated coke regeneration tower pressure detection system according to claim 1, characterized in that: The first branch is provided with an anti-blocking device to prevent the first branch from being blocked; The anti-blocking device is arranged outside the activated coke regeneration tower and is detachably connected to the first branch.

6. The activated coke regeneration tower pressure detection system according to claim 5, characterized in that: The anti-blocking device And / or the outer wall of the connecting pipe is provided with a detachable heat-insulating structure; The thermal insulation structure is one of thermal insulation cotton plus an outer protective plate, electric heating, and steam heating.

7. The activated coke regeneration tower pressure detection system according to any one of claims 1 to 6, characterized in that: Also includes instrument incubator; The pressure detection device is a pressure transmitter and is arranged in the instrument insulation box.

8. The activated coke regeneration tower pressure detection system according to claim 7, characterized in that: The control valve is a solenoid valve or a manual valve.

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