CN102654473A - Device and method for measuring contents of three phases in slurry reactor online - Google Patents
Device and method for measuring contents of three phases in slurry reactor online Download PDFInfo
- Publication number
- CN102654473A CN102654473A CN2011100504391A CN201110050439A CN102654473A CN 102654473 A CN102654473 A CN 102654473A CN 2011100504391 A CN2011100504391 A CN 2011100504391A CN 201110050439 A CN201110050439 A CN 201110050439A CN 102654473 A CN102654473 A CN 102654473A
- Authority
- CN
- China
- Prior art keywords
- rate
- phase
- attitude bed
- volume
- slurry attitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a device for measuring contents of three phases in a slurry reactor online. The device comprises a conducting probe detection unit (2) and an electrical resistance tomography detection unit (1), wherein the conducting probe detection unit (2) comprises a plurality of conducting probes (4) arranged in the slurry reactor (9), and is used for measuring volume rate of the gas phase; the electrical resistance tomography detection unit (1) comprises a plurality of sensor electrodes (3) arranged on the inner wall of the slurry reactor (9) and is used for measuring the sum of the volume rates of the gas phase and the solid phase; and the conducting probes (4) and the sensor electrodes (3) are uniformly arranged on the circumference of the slurry reactor (9) at equal arcs in multiple layers in the horizontal direction. The device provided by the invention can conveniently and rapidly obtain volume rates of the gas phase, the liquid phase and the solid phase in the slurry reactor, is easy to analyze and higher in precision, and is safe without irradiation.
Description
Technical field
The present invention relates to field of chemical engineering, particularly, the present invention relates to the device and method of three phase contents in a kind of on-line measurement slurry attitude bed.
Background technology
Slurry attitude bed is as using a kind of widely reactor in the chemical field; Slurry attitude bed three phase contents comprise gas phase content, liquid phase content and solid three parts of phase content; The rate distribution that contains of its interior three-phase is the important parameter that reactor designs and amplifies, and the rate distribution that contains of three-phase simultaneously also has great importance for controlling the carrying out that reacts.Because the complicacy of three phase flow; The measuring technology that succinctly, effectively can record three phase contents at present simultaneously still lacks very much; The experimental data of three phase contents also seldom; Mathematical model that can its flow behavior of accurate description is also very limited, and this situation is restricting the academic research and the commercial Application of three-phase bed.Measurement for solid phase content in the bed; People such as Zhang Kai have reported and have a kind ofly analyzed definite method (Chemical Engineering Journal 86 (2002) 299-307) after adopting ST sampling; (Chem.Eng.Technol.22 (1999) 8,683-689) and people such as Karim Kiared have reported a kind of method of utilizing radiomaterial to survey as trace particle.Adopt people's report such as Zhang Kai with analyzing the method for confirming solid phase content after the ST sampling, but this method exists sampling difficulty, shortcoming that error is big.And the method for the use radiomaterial of people such as Karim Kiared report, but this method exists the detection technique cost high, has radioactivity, has certain deficiencies such as potential safety hazard.For succinctly, effectively can record three phase contents simultaneously, be convenient to the exploitation and the amplification of reactor, the present invention proposes a kind of measuring method of starching three phase contents in the attitude bed.
Summary of the invention
The objective of the invention is to overcome analyze after above-mentioned employing ST is taken a sample and have the shortcoming that sampling is difficult, error is big in the method for confirming solid phase content; And adopt radiomaterial to measure the detection technique cost height of solid phase content, have radioactive shortcoming, and the device and method of three phase contents in a kind of on-line measurement slurry attitude bed is provided.
Device according to three phase contents in the on-line measurement slurry attitude bed of the present invention comprises: conducting probe detecting unit 2 and ERT detecting unit 1;
Said conducting probe detecting unit 2 comprises being arranged on starches some conducting probes 4 in the attitude bed 9, is used to measure gaseous phase volume and contains rate; Said ERT detecting unit 1 comprises the some sensor electrodes 3 that are arranged on slurry attitude bed 9 inwalls, is used to measure that gaseous phase volume contains rate and solid volume contains the rate sum; Described conducting probe 4 evenly is provided with the first-class arc of circumference of sensor electrode 3 at slurry attitude bed 9, and vertically is the multilayer setting.
As a kind of improvement of such scheme, being distributed in the slurry attitude bed 9 of described conducting probe 4 symmetries, it is different and less than radius that it gets into length in slurry attitude bed 9; The number of described conducting probe 4 check points is 4～8.
As another improvement of such scheme, being distributed in of described sensor electrode 3 symmetries are starched on the attitude bed 9; The number of described sensor electrode 3 is less than 32.
As another improvement of such scheme, described device also comprises support unit 10, and this support unit 10 is used to support conducting probe detecting unit 2 and ERT detecting unit 1.
As also a kind of improvement of such scheme, described device also comprises data processing unit 8, and said data processing unit 8 links to each other with ERT detecting unit 1 with conducting probe detecting unit 2, is used for the processing of data.
The present invention also provides the method for three phase contents in a kind of on-line measurement slurry attitude bed; This method is through the some sensor electrodes 3 on the inwall that evenly is arranged on slurry attitude bed 9 circumference in the ERT detecting unit 1, and the mensuration gaseous phase volume contains rate and solid volume contains the rate sum; Through the some sensor electrodes 3 on the inwall that evenly is arranged on slurry attitude bed 9 circumference in the ERT detecting unit 1; The mensuration gaseous phase volume contains rate and solid volume contains the rate sum; Wherein conducting probe 4 evenly is provided with the first-class arc of circumference of sensor electrode 3 at slurry attitude bed 9, and is vertically that multilayer setting realizes;
This method may further comprise the steps:
1) comprise gas, liquid, solid three-phase slurry stream when slurry attitude bed, the signal that is installed in some conducting probes 4 mensuration in the slurry attitude bed 9 is transferred to conducting probe detecting unit 2, is transferred to data processing unit (8) through after the digital-to-analog conversion, calculates gaseous phase volume and contains rate;
2) be installed in the signal that the some sensor electrodes 3 on slurry attitude bed 9 inwalls measure and be transferred to ERT detecting unit 1, be transferred to data processing unit 8, calculate that gaseous phase volume contains rate and solid volume contains the rate sum through after the digital-to-analog conversion;
3) gaseous phase volume that obtains according to step 1) contains rate and step 2) in the gaseous phase volume that obtains contain rate and solid volume contains the rate sum, calculate solid volume and contain rate;
4) according to step 2) in the gaseous phase volume that obtains contain rate with and the volume of gas, liquid and solid three-phase to contain the rate sum be 1, calculate liquid phase volume and contain rate;
Liquid phase is a conducting medium in the gas, liquid, solid three-phase slurry described in the step 1), and solid phase and gas phase are non-conductive material.
As a kind of improvement of such scheme, the solid granularity in the described step 1) in the slurry is 1～1000 μ m, and solid volume contains rate less than 25%.
Another improvement as such scheme is characterized in that, it is 5～60% that the gaseous phase volume in the described step 1) in the slurry contains rate.
The present invention is a kind of continuous line Measurement Technique, through the electric signal that produces in the three phase flow in the on-line measurement slurry attitude bed, through signal Processing can obtain fast and easily three-phase separately contain rate.The technical solution adopted for the present invention to solve the technical problems is: the sensor electrode of ERT detecting unit is placed slurry attitude bed inwall, and the conducting probe of conducting probe detecting unit places the measurement point in the slurry attitude bed.Sensor electrode is connected with detecting unit through signal cable respectively with conducting probe, and detecting unit is connected with computer processing system through the usb data line.Divide detecting unit and conducting probe detecting unit to be installed on the support ERT, the data that detect are handled through computer processing system.The ERT detection obtains gas phase and solid volume contains the rate sum; The conducting probe detecting unit obtains gaseous phase volume and contains rate; The difference of the two promptly is that the volume of solid phase contains rate; It is 1,1 to deduct gaseous phase volume and contain that rate and solid volume contain rate and contain rate with regard to the volume that obtains liquid phase that the volume of three-phase contains the rate sum.The present invention can measure simultaneously in the slurry attitude bed axially with three-phase volume separately radially and contain rate, and measuring error is in 10%.
The invention has the beneficial effects as follows, can easily obtain starching the interior gas-liquid-solid three-phase volume separately of attitude bed efficiently and contain rate that analyze easily, precision is higher, safety is radiationless; This method is compared conventional method and is had conveniently advantage of analysis to measure; Can confirm simultaneously that in two minutes gas-liquid-solid three-phase volume separately contain rate, the method for comparing the detection technique that adopts radiomaterial has lower, the safe cold advantage of cost.
Description of drawings
Fig. 1 is a measuring method schematic diagram of the present invention;
Fig. 2 is the pick-up unit synoptic diagram in the measuring method of the present invention;
Fig. 3 is conducting probe of the present invention and the distribution schematic diagram of sensor electrode on slurry attitude bed circumference.
The accompanying drawing sign
1, ERT detecting unit 2, conducting probe detecting unit 3, sensor electrode
4, conducting probe 5, signal cable 7, usb data line
8, data processing unit 9, slurry attitude bed 10, bracing or strutting arrangement
Embodiment
Below in conjunction with accompanying drawing to further detailed explanation of device of the present invention.
In Fig. 1, the signal of sensor electrode 3 is transferred to ERT detecting unit 1 through signal cable, will give data processing unit 8 through the data transmission after the digital-to-analog conversion by 1 through usb data line 7.Its measuring method is that gas phase is mutually nonconducting as one together with solid phase, the conductivity data of utilizing sensor electrode 3 to measure, through data processing unit 8, use Maxwell's law obtain gaseous phase volume contain rate and solid volume contain rate and.The signal of conducting probe 4 is transferred to conducting probe detecting unit 2 through signal cable 5, will give data processing unit 8 through the data transmission after the digital-to-analog conversion by 2 through usb data line 7; Its measuring method is to use conducting probe to measure local conductivity value in the reactor, when bubble is punctured by conducting probe 4, according to the variation of conducting probe 4 detected conductivity, calculates local gaseous phase volume through data processing unit 8 and contains rate.Through a plurality of measurement passages, can carry out the measurement of above-mentioned parameter to a plurality of measurement points in the measured section simultaneously, thereby the gaseous phase volume that obtains this measurement cross section contains rate.The difference of said two devices measurement result is exactly that solid volume contains rate.Because it is 1,1 to deduct gaseous phase volume and contain that rate and solid volume contain rate and contain rate with regard to the volume that obtains liquid phase that the volume of three-phase contains the rate sum.
In embodiment illustrated in fig. 2, sensor electrode 3 is placed in slurry attitude bed 9 inwalls, and conducting probe 4 places in the slurry attitude bed 9; As shown in Figure 3; Conducting probe 4 and sensor electrode 3 even and symmetrical being distributed on the circumference of starching the attitude bed, the number of conducting probe 4 is 4～8, and each position of deeply starching in the attitude bed 9 can be different; Gaseous phase volume to measure diverse location in the slurry attitude bed 9 contains rate, and ERT detecting unit 1 is placed on the bracing or strutting arrangement 10 with conducting probe detecting unit 2.Sensor electrode is connected with 2 with detecting unit 1 through signal cable 5 respectively with conducting probe, and detecting unit is connected with data processing unit 8 through usb data line 7.The three-phase volume separately that obtains starching attitude bed differing heights place through computer processing system analysis contains rate.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; Technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. the device of three phase contents in the on-line measurement slurry attitude bed, said device comprises conducting probe detecting unit (2), it is characterized in that, this device also comprises: ERT detecting unit (1);
Said conducting probe detecting unit (2) comprises being arranged on starches some conducting probes (4) in the attitude bed (9), is used to measure gaseous phase volume and contains rate;
Said ERT detecting unit (1) comprises the some sensor electrodes (3) that are arranged on slurry attitude bed (9) inwall, is used to measure that gaseous phase volume contains rate and solid volume contains the rate sum;
Described conducting probe (4) and sensor electrode (3) evenly are provided with at the first-class arc of circumference of slurry attitude bed (9), and vertically are the multilayer setting.
2. the device of three phase contents is characterized in that in the on-line measurement according to claim 1 slurry attitude bed, being distributed in the slurry attitude bed (9) of described conducting probe (4) symmetry, and it is different and all less than radius that it gets into length in slurry attitude bed (9).
3. the device of three phase contents is characterized in that the number of described conducting probe (4) check point is 4～8 in the on-line measurement slurry attitude bed according to claim 1 and 2.
4. the device of three phase contents is characterized in that being distributed in of described sensor electrode (3) symmetry starched on the attitude bed (9) in the on-line measurement slurry attitude bed according to claim 1.
5. according to the device of three phase contents in claim 1 or the 4 described on-line measurement slurry attitude beds, it is characterized in that the number of described sensor electrode (3) is less than 32.
6. the method for three phase contents in the on-line measurement slurry attitude bed, this method is through the some sensor electrodes (3) on the inwall that evenly is arranged on slurry attitude bed (9) circumference in the ERT detecting unit (1), and the mensuration gaseous phase volume contains rate and solid volume contains the rate sum; Through the some sensor electrodes (3) on the inwall that evenly is arranged on slurry attitude bed (9) circumference in the ERT detecting unit (1); Measuring gaseous phase volume contains rate and solid volume and contains that the rate sum realizes; Described conducting probe (4) and sensor electrode (3) evenly are provided with at the first-class arc of circumference of slurry attitude bed (9), and vertically are the multilayer setting;
This method may further comprise the steps:
1) comprises gas, liquid, solid three-phase slurry stream when slurry attitude bed; The signal that is installed in some conducting probes (4) mensuration in the slurry attitude bed (9) is transferred to conducting probe detecting unit (2); Be transferred to data processing unit (8) through after the digital-to-analog conversion, calculate gaseous phase volume and contain rate;
2) be installed in the signal that the some sensor electrodes (3) on slurry attitude bed (9) inwall measure and be transferred to ERT detecting unit (1), be transferred to data processing unit (8), calculate that gaseous phase volume contains rate and solid volume contains the rate sum through after the digital-to-analog conversion;
3) gaseous phase volume that obtains according to step 1) contains rate and step 2) in the gaseous phase volume that obtains contain rate and solid volume contains the rate sum, calculate solid volume and contain rate;
4) according to step 2) in the gaseous phase volume that obtains contain rate with and the volume of gas, liquid and solid three-phase to contain the rate sum be 1, calculate liquid phase volume and contain rate;
Liquid phase is a conducting medium in the gas, liquid, solid three-phase slurry described in the step 1), and solid phase and gas phase are non-conductive material.
7. the method for three phase contents is characterized in that the solid granularity is 1～1000 μ m in the described step 1) in the measurement slurry attitude bed according to claim 6, and solid volume contains rate less than 25%.
8. the method for three phase contents is characterized in that in the measurement according to claim 6 slurry attitude bed, in the described step 1) in the slurry gaseous phase volume to contain rate be 5～60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100504391A CN102654473A (en) | 2011-03-02 | 2011-03-02 | Device and method for measuring contents of three phases in slurry reactor online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100504391A CN102654473A (en) | 2011-03-02 | 2011-03-02 | Device and method for measuring contents of three phases in slurry reactor online |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102654473A true CN102654473A (en) | 2012-09-05 |
Family
ID=46730130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100504391A Pending CN102654473A (en) | 2011-03-02 | 2011-03-02 | Device and method for measuring contents of three phases in slurry reactor online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102654473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765334A (en) * | 2018-12-11 | 2019-05-17 | 西安交通大学 | Biphase gas and liquid flow void fraction measuring device and method in a kind of particle packing bed |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531614A1 (en) * | 1991-09-11 | 1993-03-17 | Auergesellschaft Gmbh | Gas measuring apparatus |
| CN1344929A (en) * | 2000-09-26 | 2002-04-17 | 中国科学院力学研究所 | Resistance chromatographic instrument for monitoring gas-liquid phase pipe flow and its monitoring method |
| CN101975801A (en) * | 2010-09-30 | 2011-02-16 | 北京交通大学 | Novel multi-mode adaptive sensor system |
-
2011
- 2011-03-02 CN CN2011100504391A patent/CN102654473A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531614A1 (en) * | 1991-09-11 | 1993-03-17 | Auergesellschaft Gmbh | Gas measuring apparatus |
| CN1344929A (en) * | 2000-09-26 | 2002-04-17 | 中国科学院力学研究所 | Resistance chromatographic instrument for monitoring gas-liquid phase pipe flow and its monitoring method |
| CN101975801A (en) * | 2010-09-30 | 2011-02-16 | 北京交通大学 | Novel multi-mode adaptive sensor system |
Non-Patent Citations (2)
| Title |
|---|
| 韩梅: "改进双探针电导探头研究外环流反应器内气相特征", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 韩玉环等: "气液固三相外环流反应器相含率分布与气液流动结构", 《过程工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765334A (en) * | 2018-12-11 | 2019-05-17 | 西安交通大学 | Biphase gas and liquid flow void fraction measuring device and method in a kind of particle packing bed |
| CN109765334B (en) * | 2018-12-11 | 2020-08-28 | 西安交通大学 | Gas-liquid two-phase flow gas content measuring device and method in particle accumulation bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhai et al. | Cross-correlation velocity measurement of horizontal oil–water two-phase flow by using parallel–wire capacitance probe | |
| Shi et al. | Conductance sensors for multiphase flow measurement: A review | |
| An et al. | Liquid holdup measurement in horizontal oil–water two-phase flow by using concave capacitance sensor | |
| Zhai et al. | Liquid holdup measurement with double helix capacitance sensor in horizontal oil–water two-phase flow pipes | |
| CN102495107B (en) | Internal and external composite array sensor for detecting process parameter of fluid in pipeline | |
| Aw et al. | Electrical resistance tomography: A review of the application of conducting vessel walls | |
| Zhai et al. | The development of a conductance method for measuring liquid holdup in horizontal oil–water two-phase flows | |
| Jin et al. | Electrical resistance tomography coupled with differential pressure measurement to determine phase hold-ups in gas–liquid–solid outer loop bubble column | |
| CN104914144B (en) | Hydrogen concentration on-line monitoring device used for nuclear power plants | |
| Jin et al. | Measurement of gas holdup profiles in a gas liquid cocurrent bubble column using electrical resistance tomography | |
| Singh et al. | Feasibility of Electrical Resistance Tomography for measurements of liquid holdup distribution in a trickle bed reactor | |
| CN104332198A (en) | Radioactive nuclide gamma activity online measuring system | |
| CN106403800B (en) | A kind of condenser type gas-liquid two-phase separation flow liquid film apparatus for measuring distribution | |
| CN102654473A (en) | Device and method for measuring contents of three phases in slurry reactor online | |
| Wang et al. | A novel online technique for water conductivity detection of vertical upward oil–gas–water pipe flow using conductance method | |
| Hou et al. | Experimental and theoretical investigation of mass transfer in a circulating fluidized bed | |
| CN104515562A (en) | Multiphase flow micro-differential pressure measuring device and flow metering method | |
| CN204373715U (en) | A kind of polyphasic flow micro-pressure-difference measurement mechanism | |
| Zhang et al. | Experimental validation of the calculation of phase holdup for an oil–water two-phase vertical flow based on the measurement of pressure drops | |
| CN109142681A (en) | A kind of controllable constant-temperature can survey the novel soil-column test device of conductivity | |
| Muhamedsalih et al. | A two-phase flow meter for determining water and solids volumetric flow rates in stratified, inclined solids-in-water flows | |
| CN206627481U (en) | A kind of gas chromatograph | |
| Othman et al. | Cross-sectional capacitance measurement of particle concentration in a microchannel with multi-layered electrodes | |
| CN109765334B (en) | Gas-liquid two-phase flow gas content measuring device and method in particle accumulation bed | |
| CN102052951B (en) | Measurement device and method for multi-phase interface liquid level based on dual-modality sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120905 |