CN113358183A - On-line measuring method and device for density of slurry bed hydrocracking reaction product by non-nuclear material level meter - Google Patents
On-line measuring method and device for density of slurry bed hydrocracking reaction product by non-nuclear material level meter Download PDFInfo
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- CN113358183A CN113358183A CN202010147676.9A CN202010147676A CN113358183A CN 113358183 A CN113358183 A CN 113358183A CN 202010147676 A CN202010147676 A CN 202010147676A CN 113358183 A CN113358183 A CN 113358183A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
Abstract
The invention belongs to the field of chemical industry, relates to the technical field of heavy oil (residual oil) modification, and particularly discloses a non-nuclear level gauge online measurement method and a non-nuclear level gauge online measurement device for the density of a slurry bed hydrocracking reaction product, wherein the online measurement device meets the online measurement requirements of the gas phase of the reaction product of a slurry bed hydrocracking device and the density of an oil slurry system, avoids the QHSE hidden danger possibly generated when the nuclear level gauge is adopted to measure the density of the reaction product of the slurry bed, and reduces the construction and maintenance cost of measurement equipment; the risk of blockage of measuring facilities is avoided, and the problem of safe, stable and long-period operation which is puzzled to the large-scale popularization of the slurry bed technology is successfully solved.
Description
Technical Field
The invention belongs to the field of chemical industry, relates to the technical field of heavy oil (residual oil) modification, and more particularly relates to a non-nuclear level meter online measurement method and a non-nuclear level meter online measurement device for the density of a slurry bed hydrocracking reaction product.
Background
China always depends heavily on crude oil import, and import of heavy crude oil or high-sulfur petroleum tends to be great. The treatment of the residual oil produced by heavy oil is a world problem. At present, about 1-2 hundred million tons of domestic residual oil is processed every year, and the yield of the traditional delayed coking technology is about 60-70 percent; the yield is about 60-75% by adopting a high-pressure boiling bed hydrogenation technology. The delayed coking technology has a poor prospect in anticipation under the increasingly strict environmental protection requirements of the country; the fixed bed residual oil hydrogenation is not only limited by raw material impurities, even if the most advanced catalyst and process flow technology are adopted, the operation period cannot break through 22 months, and cannot be matched with the overhaul period of three years or four years. The boiling bed residual oil hydrogenation can not ensure the stability of asphaltene in the product, and a fractionation system is easy to block, so that the stable operation of the device is influenced, and the conversion rate can not exceed 75-80% of a ceiling.
The slurry bed hydrocracking process has no limit on the content of impurities in the processed raw materials, even can process asphalt and oil sand, is high in conversion rate and can reach more than 90-95%, the limit of the operation period of the device is almost eliminated on the premise of permission of equipment conditions, and the difference between the initial stage and the final stage of operation is avoided, so that the slurry bed hydrocracking process is regarded as an effective way for converting inferior heavy oil and residual oil into light oil, and is an important technical means for replacing the existing coking device, greatly improving the processing flexibility of the crude oil in a whole plant and improving the yield of the light oil in the whole plant.
The slurry bed hydrocracking reaction follows the reaction mechanism of free radicals, and the reaction coking can be effectively inhibited by reasonably controlling the reaction conditions under the atmosphere of hydrogen and a catalyst. The catalyst precursor, the catalyst active body, the metal sulfide obtained by demetallization reaction and the coke generated by reaction exist in the liquid phase of the reaction product in a solid state form to form slurry oil which enters a gas-liquid separator of the reaction product of the slurry bed residual oil hydrocracking device. The density of the gas phase and the oil slurry of the reaction products obtained on line can be monitored and adjusted in real time, and the density value can be regarded as the core operating parameter of the slurry bed hydrocracking unit. At present, the density is measured on line, particularly the density of a liquid-solid mixed state is obtained by adopting a nuclear level gauge, but the mode has QHSE hidden danger and blocking risk, and the construction and maintenance cost of detection equipment is increased. Therefore, a new set of on-line detection device needs to be developed.
Disclosure of Invention
The invention aims to provide a non-nuclear level gauge online measurement method and a device for the density of a slurry bed hydrocracking reaction product, the online measurement device meets the online measurement requirement of the density of a gas phase and an oil slurry system of the reaction product of a slurry bed hydrocracking device, avoids the potential risk of QHSE (quantum well steam equinox) possibly generated when the density of the slurry bed reaction product is measured by adopting a nuclear level gauge, and reduces the construction and maintenance cost of measurement equipment; the risk of blockage of the measuring facility is avoided.
In order to achieve the above object, one aspect of the present invention provides an on-line measuring method for a non-nuclear level gauge of the density of a slurry hydrocracking reaction product, the on-line measuring method for the non-nuclear level gauge comprising:
1) separating a reaction product from a slurry bed hydrocracking reaction into a gas phase product and a liquid phase product in a gas-liquid separator;
2) measuring the pressure P of any two points of the gas phase part in the gas-liquid separatorA、PBAnd the height difference Δ H between the two pointsGWherein, Δ HG＞0m；
3) Measuring the pressure P of any two points of the liquid phase part in the gas-liquid separatorC、PDAnd the height difference Δ H between the two pointsLWherein, Δ HL＞0m；
4) Calculating the gas phase product density rho by the formula (1) and the formula (2) respectivelyGAnd liquid phase product density ρL：
Wherein g is the acceleration of gravity.
In the invention, the pressure gauge can be adopted to measure the pressure of each point, and the differential pressure gauge can also be adopted to assist in directly measuring the pressure difference between two points. In order to improve the accuracy of the measurement data, a multi-point measurement method can be adopted, then the average value of the pressure difference is obtained, and the method is implemented by the technical personnel in the field to flexibly process according to the actual working condition.
According to the invention, preferably, said difference in height Δ HGMore than or equal to 1 m; the height difference Δ HL≥0.5m。
The catalyst used in the slurry bed hydrocracking reaction involved in the invention is preferably at least one selected from natural mineral solid powder catalyst, industrial waste residue solid powder catalyst, organic metal catalyst and inorganic compound, and the active ingredient of the catalyst is molybdenum disulfide; the reaction raw material of the slurry bed hydrocracking reaction is at least one selected from vacuum residue, deoiled asphalt, ethylene cracked tar, coal tar, super-thick crude oil and refinery sludge.
In the present invention, the liquid phase portion in the gas-liquid separator generally includes at least one of naphtha, diesel oil, wax oil, and unconverted oil optionally doped with solid particles, wherein the solid particles include at least one of a catalyst precursor, a catalyst active, a metal sulfide, and coke.
In another aspect of the present invention, there is provided an on-line measuring apparatus for a non-nuclear level gauge of the density of a hydrocracking reaction product in a slurry bed, wherein the on-line measuring method for the non-nuclear level gauge is performed in the apparatus, and the on-line measuring apparatus for the non-nuclear level gauge comprises: the system comprises a slurry bed hydrocracking device, a gas-liquid separator, a gas-phase pressure gauge and a liquid-phase pressure gauge;
the slurry bed hydrocracking device is connected with the gas-liquid separator, and at least two gas-phase pressure gauges and at least two liquid-phase pressure gauges are arranged in the gas-phase separator.
In the present invention, there is no particular requirement for the apparatus for receiving the secondary reaction product, and generally, the gas-liquid separator is at least one selected from a hot high-pressure liquid-separating tank, a hot medium-pressure liquid-separating tank, and a hot low-pressure liquid-separating tank, and preferably, the gas-liquid separator is a hot high-pressure liquid-separating tank. In addition, the on-line measuring device of the non-nuclear material level meter preferably further comprises a purging system.
The online measuring device meets the online measuring requirements of the gas phase of the reaction product of the slurry bed hydrocracking device and the density of an oil slurry system, avoids the QHSE hidden danger possibly generated when a nuclear material level meter is adopted to measure the density of the reaction product of the slurry bed, and reduces the construction and maintenance cost of the measuring equipment; the risk of blockage of measuring facilities is avoided, and the problem of safe, stable and long-period operation which is puzzled to the large-scale popularization of the slurry bed technology is successfully solved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
FIG. 1 shows a schematic diagram of a gas-liquid separator in an on-line measuring device of an off-nuclear level gauge according to an embodiment of the present invention.
Description of reference numerals:
1. a reaction product; A. gas phase pressure measurement point a; B. gas phase pressure measurement point B; C. liquid phase pressure measurement point C; D. liquid phase pressure measurement point D; E. a hot high-pressure liquid separation tank; Δ HGThe relative height of the gas phase measuring point; Δ HLThe relative height of the liquid phase measuring point; pAA pressure gauge is arranged at the point A; pBA pressure gauge at a point B; pCA pressure gauge at point C; pDA pressure gauge is arranged at the point D; PDT, differential pressure gauge; F.and (4) purging the system.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.
Examples
An on-line measuring device for a non-nuclear material level meter of the density of a slurry bed hydrocracking reaction product comprises: the system comprises a slurry bed hydrocracking device, a hot high-pressure liquid separation tank E, a gas-phase pressure gauge, a liquid-phase pressure gauge and a purging system;
the slurry bed hydrocracking device is connected with a gas-liquid separator, a pressure gauge A, a pressure gauge B, a pressure gauge C and a pressure gauge D are arranged in the hot high-pressure liquid separation tank E, and a pressure difference gauge PDT is further arranged between the gas-phase pressure gauges.
The device is used for measuring the density of the hydrocracking reaction product in the slurry bed on line, and the specific method comprises the following steps:
1) separating a reaction product 1 from a slurry bed hydrocracking reaction into a gas-phase product and a liquid-phase product in a hot high-pressure liquid separation tank E;
2) measuring the pressure P of any two points of the gas phase part in the hot high-pressure liquid separation tank EA＝15999250Pa、PB16000000Pa, and a height difference Δ H between two pointsG＝2.5m；
3) Measuring the pressure P of any two points of the liquid phase part in the hot high-pressure liquid separation tank EC＝15993140Pa、PD16000000Pa, and a height difference Δ H between two pointsL＝1m；
4) Calculating the gas phase product density rho by the formula (1) and the formula (2) respectivelyGAnd liquid phase product density ρL：
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A non-nuclear level meter online measurement method for the density of a slurry bed hydrocracking reaction product is characterized by comprising the following steps:
1) separating a reaction product from a slurry bed hydrocracking reaction into a gas phase product and a liquid phase product in a gas-liquid separator;
2) measuring the pressure P of any two points of the gas phase part in the gas-liquid separatorA、PBAnd the height difference Δ H between the two pointsGWherein, Δ HG＞0m；
3) Measuring the pressure P of any two points of the liquid phase part in the gas-liquid separatorC、PDAnd the height difference Δ H between the two pointsLWherein, Δ HL＞0m；
4) Calculating the gas phase product density rho by the formula (1) and the formula (2) respectivelyGAnd liquid phase product density ρL：
Wherein g is the acceleration of gravity.
2. The on-line measuring method of the non-nuclear level gauge according to claim 1, wherein the height difference ahG≥1m。
3. The on-line measuring method of the non-nuclear level gauge according to claim 1, wherein the height difference ahL≥0.5m。
4. The on-line measuring method of the non-nuclear level gauge according to claim 1, wherein the reaction raw material of the slurry hydrocracking reaction is selected from at least one of vacuum residue, deoiled asphalt, ethylene cracked tar, coal tar, extra heavy crude oil and refinery sludge.
5. The on-line measuring method of the non-nuclear level gauge according to claim 1, wherein the liquid phase portion in the gas-liquid separator includes at least one of naphtha, diesel, wax oil, and unconverted oil optionally doped with solid particles.
6. The non-nuclear level gauge online measuring method according to claim 5, wherein the solid particles include at least one of a catalyst precursor, a catalyst active body, a metal sulfide, and coke.
7. The on-line measuring method of the non-nuclear level gauge according to claim 1, wherein the catalyst used in the slurry hydrocracking reaction is at least one selected from natural mineral solid powder catalyst, industrial waste solid powder catalyst, organic metal catalyst and inorganic compound, and the active ingredient of the catalyst is molybdenum disulfide.
8. An on-line measuring device of a non-nuclear level gauge for measuring the density of a hydrocracking reaction product in a slurry bed, which is characterized in that the on-line measuring method of the non-nuclear level gauge in any one of claims 1 to 7 is carried out in the device, and the on-line measuring device of the non-nuclear level gauge comprises: the system comprises a slurry bed hydrocracking device, a gas-liquid separator, a gas-phase pressure gauge and a liquid-phase pressure gauge;
the slurry bed hydrocracking device is connected with the gas-liquid separator, and at least two gas-phase pressure gauges and at least two liquid-phase pressure gauges are arranged in the gas-phase separator.
9. The on-line measuring device of the non-nuclear level gauge according to claim 8, wherein the gas-liquid separator is at least one selected from a hot high-pressure liquid separation tank, a hot medium-pressure liquid separation tank and a hot low-pressure liquid separation tank, and the on-line measuring device of the non-nuclear level gauge further comprises a purging system.
10. The on-line measuring device of the non-nuclear level gauge according to claim 9, wherein the gas-liquid separator is a hot high-pressure liquid separation tank.
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| CN202010147676.9A CN113358183A (en) | 2020-03-05 | 2020-03-05 | On-line measuring method and device for density of slurry bed hydrocracking reaction product by non-nuclear material level meter |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270306A (en) * | 2000-04-06 | 2000-10-18 | 陈永生 | Dual liquid columns type three-phase (oil, gas and water) metering instrument by height (or pressure) and density difference |
| CN1632514A (en) * | 2004-12-30 | 2005-06-29 | 仇小琦 | Device for measuring density and constituent containing rate of mixed fluid |
| US20090220389A1 (en) * | 2005-12-14 | 2009-09-03 | Nippon Steel Engineering Co., Ltd. | Bubble column-type fischer-tropsch synthesis slurry bed reaction system |
| CN104296826A (en) * | 2013-07-15 | 2015-01-21 | 广东美的暖通设备有限公司 | Gas-liquid separator and liquid level measuring device and method thereof |
-
2020
- 2020-03-05 CN CN202010147676.9A patent/CN113358183A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270306A (en) * | 2000-04-06 | 2000-10-18 | 陈永生 | Dual liquid columns type three-phase (oil, gas and water) metering instrument by height (or pressure) and density difference |
| CN1632514A (en) * | 2004-12-30 | 2005-06-29 | 仇小琦 | Device for measuring density and constituent containing rate of mixed fluid |
| US20090220389A1 (en) * | 2005-12-14 | 2009-09-03 | Nippon Steel Engineering Co., Ltd. | Bubble column-type fischer-tropsch synthesis slurry bed reaction system |
| CN104296826A (en) * | 2013-07-15 | 2015-01-21 | 广东美的暖通设备有限公司 | Gas-liquid separator and liquid level measuring device and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 宋巍等: "浆态床反应器气含率研究进展", 《天津化工》 * |
| 门卓武等: "操作变量对大型浆态床反应器流体力学特性的影响", 《化工学报》 * |
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Application publication date: 20210907 |