A steam loose pipe anti-blocking system for a settler
By adding gas transportation on the secondary line pipeline and putting gas before the main air is introduced in the system, combined with the measure of replacing 1.0MPa steam when the temperature of the settler stripping section reaches above 300℃, the problem of loosening pipe blockage caused by low temperature in the system is solved, and the loosening effect is ensured.
Patent Information
- Application Number
- CN202421496187.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-27
AI Technical Summary
When the temperature of the settler stripping section rises to 300°C at the beginning of the start of construction, steam cannot be put into use due to low temperature in the system, resulting in the catalyst return, causing the loose pipe to be blocked, and the high temperature environment is likely to cause the loose steam pipeline to break.
A new gas transmission route was added to the sub-line pipeline and put into use before the main air was drawn in the system to prevent the catalyst from entering the loosened pipe; when the temperature of the settling stripping section reaches above 300℃, 1.0MPa steam is replaced.
It effectively prevents the loose pipe blockage caused by catalyst reflux, and ensures the loosening effect of loose steam on the stripping section cone and the riser to be grown, and avoids the breakage of the loose steam pipeline.
Smart Images
Figure CN222723841U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of settlers, and in particular relates to a steam loose pipe anti-blocking system for a settler. Background Art
[0002] The cone of the stripping section of the settler in the reverse-regeneration system of the DCC unit and the riser to be produced are loosened into steam, which plays the role of loosening the catalyst at the cone of the stripping section and the riser to be produced during the normal operation of the unit. At the beginning of the start-up phase, the temperature in the system is relatively low and steam cannot be put into use. If it is put into use too early, water will accumulate due to the low temperature in the system, which will have an adverse effect on the start-up. This loosening steam can only be used for cone loosening steam protection when the temperature of the stripping section of the settler reaches above 300℃. During the period from the beginning of the start-up to the temperature of the stripping section of the settler rising to 300℃, the Φ25*4 loose steam pipeline is easily blocked by the residual catalyst in the system. After the start-up, the loose steam pipeline is in a high temperature environment of nearly 700℃, so the pipeline is prone to breakage and the loose steam fails. Utility Model Content
[0003] (I) Purpose of the utility model
[0004] In order to overcome the above disadvantages, the utility model aims to provide a steam loosening pipe anti-blocking system for a settler to solve the above technical problems.
[0005] (II) Technical solution
[0006] To achieve the above objectives, the technical solutions provided by this application are as follows:
[0007] A steam loosening pipe anti-blocking system for a settler includes a settler, wherein the settler includes a regenerator, the regenerator is connected to an air intake pipeline, an air inlet of the air intake unit is respectively connected to a loosening steam pipeline and a secondary pipeline, the loosening steam pipeline transmits steam, the secondary pipeline transmits gas, and the loosening steam pipeline includes an orifice flowmeter for measuring flow.
[0008] Preferably, the orifice flowmeter comprises an orifice plate with a circular opening, flanges connected to the pipeline are provided on both sides of the orifice plate, and differential pressure transmissions are provided on the front and rear sides of the orifice plate.
[0009] Preferably, the upper end of the settler is connected to the riser reactor, the lower end of the settler is a stripping section, the bottom of the stripping section is a cone, the bottom of the cone is a riser to be generated, and a regenerator is provided on the outside of the cone and the riser to be generated.
[0010] Preferably, the air intake pipeline includes a one-way valve and an air intake valve in sequence according to the flow direction of the gas, and the one-way valve and the air intake valve are connected to a vent pipeline, and the vent pipeline is provided with a vent valve.
[0011] Preferably, the one-way valve includes a valve body, in which a first valve channel and a second valve channel are provided, the diameter of the first valve channel is smaller than the diameter of the second valve channel, the first valve channel and the second valve channel are smoothly connected via a sealing channel, the sealing channel is truncated cone-shaped, a valve core is slidably provided in the sealing channel, the front end of the valve core corresponds to the end with the smaller diameter of the sealing channel, and the rear end of the valve core is connected to the support frame via a valve core spring.
[0012] Preferably, the steam transmitted by the loose steam pipeline is 1.0 MPa steam.
[0013] Beneficial effects:
[0014] The utility model solves the problem that steam cannot be used due to low temperature in the system during the initial start-up period until the temperature of the stripping section of the settler rises to 300°C, resulting in reflux of catalyst and blockage of the loosening pipe. A new gas transmission line is added to the secondary pipeline and put into use before the main air is introduced into the system to prevent the catalyst from flowing into the loosening pipe and causing blockage before the main air is swept and the temperature of the stripping section of the settler rises to 300°C. When the temperature of the stripping section of the settler reaches above 300°C, 1.0MPa steam is used instead. The above-mentioned problem is solved after the transformation is completed, and the loosening effect of the loosening steam on the cone of the stripping section and the standpipe to be produced is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 It is a structural diagram of an orifice plate meter according to an embodiment of the utility model;
[0017] Figure 3 It is a structural diagram of a one-way valve according to an embodiment of the utility model. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0019] The utility model provides a steam loosening pipe anti-blocking system for a settler, comprising a settler 9, the upper end of which is connected to a riser reactor 10 to provide space for mixing crude oil and hot catalyst, the lower end of which is a stripping section 8 for further separating oil gas and catalyst, the bottom of which is a cone 11, the arrangement of which helps to promote the sedimentation of catalyst particles in the settler, the bottom of which is a standpipe 12 to be generated, which is used to transport the catalyst to be generated from the regenerator to the settler. A regenerator 7 is arranged outside the cone 11 and the standpipe 12 to be generated.
[0020] The settler 9 includes a regenerator 7, which is connected to an intake pipeline. The intake pipeline includes a one-way valve 5 and an intake valve in sequence according to the flow direction of the gas. The one-way valve 5 includes a valve body 16. A first valve channel 22 and a second valve channel 20 are arranged in the valve body 16. The diameter of the first valve channel 22 is smaller than that of the second valve channel 20. The first valve channel 22 and the second valve channel 20 are smoothly connected through a sealing channel 21. The sealing channel 21 is truncated. A valve core 17 is slidably arranged in the sealing channel 21. The front end of the valve core 17 corresponds to the end with a smaller diameter of the sealing channel 21. The rear end of the valve core 17 is connected to a support frame 19 through a valve core spring 18. The cooperation between the valve core spring and the valve core can effectively prevent the gas in the regenerator from flowing back into the steam pipeline. When steam or gas is transmitted, the valve core receives a backward thrust so that steam or gas enters from the gap between the valve core and the sealing channel.
[0021] The one-way valve and the air intake valve 5 are connected to a vent line 6, and a vent valve is provided on the vent line 6.
[0022] The air inlet of the air intake unit is connected to the loosening steam pipeline 23 and the secondary pipeline 4 respectively. The loosening steam pipeline 23 transmits steam 2, and the steam transmitted by the loosening steam pipeline 23 is 1.0MPa steam 2. The secondary pipeline 4 transmits gas 1, and the gas 1 includes non-purified air. The loosening steam pipeline 23 includes an orifice flowmeter 3 for measuring flow. The orifice flowmeter 3 includes an orifice plate 15 with a circular opening. Both sides of the orifice plate 15 are provided with flanges 13 connected to the pipeline. The front and rear sides of the orifice plate 13 are provided with a differential pressure transmission 14. The flow velocity pressure of the gas is changed by setting the circular opening on the orifice plate, and the differential pressure transmission measures the flow by measuring the pressure on the flanges on both sides of the orifice plate.
[0023] The utility model solves the problem that steam cannot be used due to low temperature in the system during the initial start-up period until the temperature of the stripping section of the settler rises to 300°C, resulting in reflux of catalyst and blockage of the loosening pipe. A new gas transmission line is added to the secondary pipeline and put into use before the main air is introduced into the system to prevent the catalyst from flowing into the loosening pipe and causing blockage before the main air is swept and the temperature of the stripping section of the settler rises to 300°C. When the temperature of the stripping section of the settler reaches above 300°C, 1.0MPa steam is used instead. The above-mentioned problem is solved after the transformation is completed, and the loosening effect of the loosening steam on the cone of the stripping section and the standpipe to be produced is guaranteed.
[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
Claims
1. A steam loosening pipe anti-blocking system for a settler, characterized in that: It includes a settler, which includes a regenerator. The regenerator is connected to an air intake pipeline. The air inlet of the air intake unit is respectively connected to a loosening steam pipeline and a secondary pipeline. Steam is transmitted in the loosening steam pipeline, and gas is transmitted in the secondary pipeline. The loosening steam pipeline includes an orifice flowmeter for measuring flow.
2. The steam loosening pipe anti-blocking system of a settler according to claim 1, characterized in that: The orifice flowmeter comprises an orifice plate with a circular opening, flanges connected to the pipeline are arranged on both sides of the orifice plate, and differential pressure transmission devices are arranged on the front and rear sides of the orifice plate.
3. The steam loosening pipe anti-blocking system of a settler according to claim 1, characterized in that: The upper end of the settler is connected to the riser reactor, the lower end of the settler is a stripping section, the bottom of the stripping section is a cone, the bottom of the cone is a riser to be generated, and a regenerator is arranged outside the cone and the riser to be generated.
4. The steam loosening pipe anti-blocking system of a settler according to claim 1, characterized in that: The air intake pipeline includes a one-way valve and an air intake valve in sequence according to the flow direction of the gas. The one-way valve and the air intake valve are connected to a vent pipeline, and the vent pipeline is provided with a vent valve.
5. The steam loosening pipe anti-blocking system of a settler according to claim 4, characterized in that: The one-way valve includes a valve body, in which a first valve channel and a second valve channel are provided, the diameter of the first valve channel is smaller than the diameter of the second valve channel, the first valve channel and the second valve channel are smoothly connected via a sealing channel, the sealing channel is truncated cone-shaped, a valve core is slidably provided in the sealing channel, the front end of the valve core corresponds to the end with a smaller diameter of the sealing channel, and the rear end of the valve core is connected to a support frame via a valve core spring.
6. The steam loosening pipe anti-blocking system of a settler according to claim 1, characterized in that: The steam transmitted by the loose steam pipeline is 1.0 MPa steam.