Method and device for regulating and controlling micro-flow continuous discharging of intermittently-discharged high-temperature high-pressure slurry
A high temperature and high pressure, slurry technology, applied in the direction of using electric device flow control, etc., can solve the continuous flow of small flow that is not suitable for liquid-solid multiphase medium flow control, is not suitable for liquid-solid multiphase medium, and cannot be high temperature and high pressure slurry. material control issues
Active Publication Date: 2014-02-05
SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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Problems solved by technology
[0003] Many research units and individuals have conducted research on fluid flow control devices, but none of them are fully applicable to the continuous discharge control of small flow rates of high-temperature and high-pressure slurry that is discharged intermittently.
[0004] Chinese patent ZL200920158141.0 provides a liquid flow control device, which adjusts the output pressure of the air proportional valve through the programmable controller to adjust the pressure in the water storage tank to adjust the water flow, but because there is no pressure control device at the outlet, the liquid level Under the influence, it is impossible to accurately control the liquid flow within a small flow range, and it is impossible to detect and adjust the liquid flow in real time, and it is not suitable for flow regulation of liquid-solid multiphase media.
Although it can automatically and accurately control the system flow, it is not suitable for media containing solid particles, and cannot accurately control small flow multi-phase media.
[0006] US patent application US2008041586A1 discloses a device and method for controlling the flow of multiphase fluid in deep wells, which can effectively control and adjust the flow of gas-liquid multiphase fluid, but is not suitable for liquid-solid multiphase media. The control accuracy is not high, it cannot be applied to high temperature and high pressure working conditions, and it is only suitable for conveying materials from low places to high places, it is difficult to realize the precise control of conveying small flow materials from high places to low places
[0007] To sum up, the current flow adjustment and control devices in the process of material transportation have defects such as inaccurate control of small flow, inability to meet high temperature and high pressure process conditions, and inapplicability to multi-phase media, etc., and cannot be fully applied to intermittent discharge Micro-flow continuous discharge control of high-temperature and high-pressure slurry
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Embodiment 1
[0067] The catalyst treatment technology for ebullated bed residual oil hydrogenation discharge requires continuous treatment of the catalyst that is intermittently discharged from the ebullated bed reactor.
[0068] According to the process operation requirements of the 2 million tons / year fluidized bed residual oil hydrogenation unit, the reactor needs to discharge 3m catalyst slurry every day 3 . In order to achieve the most economical and concise process during the treatment of the exhausted catalyst, the treatment process of the exhausted catalyst must be a continuous operation, that is, the treatment capacity of the exhausted catalyst treatment system is 125L / h. This requires that there must be a certain device between the ebullating bed reactor and the exhaust catalyst treatment system, which can realize the storage of the intermittent exhaust catalyst slurry and the storage of the stored exhaust catalyst. The slurry is continuously discharged with a small flow rate (1...
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Abstract
The invention relates to a method and device for regulating and controlling micro-flow continuous discharging of intermittently-discharged high-temperature high-pressure slurry, and provides the method for regulating and controlling micro-flow continuous discharging of the intermittently-discharged high-temperature high-pressure slurry. The invention further provides the device for regulating and controlling micro-flow continuous discharging of the intermittently-discharged high-temperature high-pressure slurry.
Description
technical field [0001] The invention belongs to the field of petrochemical, coal chemical, and solid waste treatment, and relates to a method and a device for converting high-temperature, high-pressure liquid-solid multi-phase medium intermittent large-flow discharge into small-flow continuous discharge. Specifically, the present invention provides a method and device for controlling continuous discharge of low-flow high-temperature and high-pressure slurry suitable for intermittent discharge. Background technique [0002] At present, in the fields of petrochemical, coal chemical, and solid waste treatment, there are often high-temperature, high-pressure liquid-solid multi-phase media in the product composition of production equipment and reaction processes. In chemical reactions, the feed rate and temperature of reactants, The pressure often determines the efficiency and product utilization of the reaction process, and the flow rate of the discharged material from the upper...
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Inventor 付鹏波李剑平黄渊汪华林
Owner SHANGHAI HUACHANG ENVIRONMENT PROTECTION