CN107290990A - A kind of investigating method of nuclear chemical industry pulse extraction post - Google Patents
A kind of investigating method of nuclear chemical industry pulse extraction post Download PDFInfo
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- CN107290990A CN107290990A CN201710302869.5A CN201710302869A CN107290990A CN 107290990 A CN107290990 A CN 107290990A CN 201710302869 A CN201710302869 A CN 201710302869A CN 107290990 A CN107290990 A CN 107290990A
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Abstract
The invention belongs to nuclear fuel reprocessing technology field, it is related to a kind of investigating method of nuclear chemical industry pulse extraction post.Described investigating method carries out observing and controlling by the following method respectively to organic phase continuous impulse extraction column and aqueous phase continuous impulse extraction column：For described organic phase continuous impulse extraction column, by operation result of measurement and/or judge interface, empty signal parameter and carry out observing and controlling；For described aqueous phase continuous impulse extraction column, by operation result of measurement and/or judge liquid level, interface, empty signal parameter and carry out observing and controlling.Using the investigating method of the present invention, more accurate observing and controlling can be carried out with pulse extraction post to nuclear chemical industry.
Description
Technical field
The invention belongs to nuclear fuel reprocessing technology field, it is related to a kind of investigating method of nuclear chemical industry pulse extraction post.
Background technology
Pulse extraction post is that nuclear chemical industry nuclear fuel post-processes important work the most frequently used in Purex flow (Purex process)
Skill equipment, is mainly used in extract and separate, the uranium in solution, plutonium is separated from each other and is divided respectively with neptunium, technetium and other fission elements
From.The quality of pulse extraction post working condition directly affects the safety of nuclear fuel post processing production and the quality of product, therefore
Observing and controlling must be carried out to it, the major parameter of observing and controlling includes liquid level, interface and empties signal etc..And according to connecting in pulse extraction post
Pulse extraction post can be divided into two kinds of organic phase continuous impulse extraction column and aqueous phase continuous impulse extraction column by the difference of continuous phase medium
Type, the position at its interface is also respectively at the upper expanding reach and lower expanding reach of extraction column according to the difference of continuous phase medium.
The maximum feature that nuclear fuel reprocessing process is different from other chemical processes is high radioactivity, strong irradiation, hypertoxicity,
The equipment selected in engineering design must adapt to these requirements.And for measure and control instrument, it is mounted directly region Lian Gai areas
The personnel in domain can not also be directly entered, therefore need the observing and controlling for realizing nuclear fuel aftertreatment technology by the way of some are special will
Ask.
Based on this, during the observing and controlling of conventional pulse extraction post, it is all based on for liquid level, interface and emptying signal
A certain formula, which is calculated, to be determined, and actually has deviation, so as to cause that correct result and prompting can not be provided in the process of running, is made
Actual operating state is unknown.
Currently with the development of computer technology, Distributed Control System (DCS system) and bus control system (FCS systems)
As a kind of new industrial process control system, replacing traditional instrument control mode.These novel control modes can
Greatly to improve control system of the past based on analog quantity assembled unit instrument, at the same can largely improve and
Measure Precision is improved, more complicated computing and TT＆C requirement is easy to implement.
The content of the invention
It is an object of the invention to provide a kind of investigating method of nuclear chemical industry with pulse extraction post, with can be more accurate right
Nuclear chemical industry carries out observing and controlling with pulse extraction post.
In order to achieve this, in the embodiment on basis, the present invention provides a kind of survey of nuclear chemical industry pulse extraction post
Prosecutor method, described investigating method passes through such as lower section respectively to organic phase continuous impulse extraction column and aqueous phase continuous impulse extraction column
Method carries out observing and controlling：
For described organic phase continuous impulse extraction column, by operation result of measurement and/or judge interface, empty signal parameter
Observing and controlling is carried out, wherein interface parameter is pressed by the position in expanding reach on the pulse extraction post described in calculating between 2 and at 3 two points
Difference, judges, computing is drawn in combination with other pressure differences；Signal parameter is emptied to judge by under the pulse extraction post described in calculating
Position pressure difference computing in expanding reach between 1 and 2 two points is drawn.
The setting of each point of the gas blow pipe insertion position in organic consecutive pulse extraction post, typically according to technique
Running situation is determined, different operation conditions, and some adjustment are had in the setting of various point locations.In lower expanding reach, 1 point
Close to lower expanding reach bottom, away from 10~35mm of bottom；2 points are being the 1/5~1/3 of whole lower expanding reach height away from lower expanding reach bottom
Place；3 points are entirely to descend at the 1/5~1/3 of expanding reach height at the top of away from lower expanding reach；4 points at the top of the lower expanding reach, away from top
20~60mm.In upper expanding reach, 1 point close to upper expanding reach bottom, into 0~30mm of plate section；2 points at the top of the upper expanding reach,
Away from 10~50mm at the top of upper expanding reach.
For described aqueous phase continuous impulse extraction column, by operation result of measurement and/or judge liquid level, interface, empty signal
Parameter carries out observing and controlling, and wherein level parameter passes through the position in expanding reach on the pulse extraction post described in calculating between 1 and at 5 two points
Pressure difference computing is drawn；Interface parameter is pressed by the position in expanding reach on the pulse extraction post described in calculating between 2 and 3 two points
Difference, judges, computing is drawn in combination with other pressure differences；Signal parameter is emptied to judge by under the pulse extraction post described in calculating
Position pressure difference computing between expanding reach 1 and 2 two points is drawn.
The position of each point of the gas blow pipe insertion in the continuous pulse extraction post of aqueous phase, needs also exist for the fortune according to technique
Market condition is determined, different operation conditions, and some adjustment are had in the setting of each position.In upper expanding reach, 1 point
Close to upper expanding reach bottom, into 0~30mm of plate section；2 points away from upper expanding reach bottom for expanding reach height on whole 1/4~
At 1/6；3 points are at 2/5~2/3 of expanding reach height on whole at the top of away from upper expanding reach；4 points are put down with upper expanding reach overfall
Together；5 points at the top of the upper expanding reach, away from 10~50mm at the top of upper expanding reach.In lower expanding reach, 1 point close to lower expanding reach bottom,
Away from lower 10~35mm of expanding reach bottom；2 points at the top of the lower expanding reach, away from 10~40mm at the top of lower expanding reach.
In a preferred embodiment, the present invention provides a kind of investigating method of nuclear chemical industry pulse extraction post, its
Described in organic phase continuous impulse extraction column interface parameter computational methods it is as follows：
1) as Δ P≤PDo≤Do×g×HDo+ Δ P, that is, judge that interface is under lower 3 positions of expanding reach and 3 positions
When being immersed in organic phase, interface parameter calculation formula is,
2) P is worked asDoDuring≤Δ P, that is, descend 3 positions of expanding reach not submerge in a liquid, now represent extraction column not
It is operated in normal operating condition, it is not necessary to which interface is calculated, and needs to provide prompting, and shows corresponding differential pressure value,
Wherein, LiTo need the interface location (m) of the pulse extraction post measured；PDoFor the pressure of the lower point-to-point transmission of expanding reach 3 and 4
Difference (Pa)；PDiFor the pressure difference (Pa) of the lower point-to-point transmission of expanding reach 2 and 3；HiFor the distance (m) of the lower point-to-point transmission of expanding reach 2 and 3；
HDaFor the distance (m) of the lower point-to-point transmission of expanding reach 1 and 2；HDoFor the distance (m) of the lower point-to-point transmission of expanding reach 3 and 4；Δ P is inclined for submergence
Difference (Pa)；DaFor aqueous phase densities (kg/m3)；DOFor organic phase density (kg/m3)；G is acceleration of gravity (m/s2)。
In a preferred embodiment, the present invention provides a kind of investigating method of nuclear chemical industry pulse extraction post, its
Described in organic phase continuous impulse extraction column empty signal parameter judge in meet following formula represent empty complete：
Wherein, PDaFor the pressure difference of the lower point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation.
In a preferred embodiment, the present invention provides a kind of investigating method of nuclear chemical industry pulse extraction post, its
Described in aqueous phase continuous impulse extraction column level parameter computational methods it is as follows：
1) P is worked asL≥PDa+PDiDuring+Δ P, that is, liquid level is judged more than the upper position of expanding reach 4, Δ P is in order to eliminate deviation
Influence, now level parameter calculation formula is,
2) P is worked asL＜ PDa+PDi+ Δ P and PDoDuring ＞ Δ P, that is, judge 3,4 positions of the liquid level now in upper expanding reach it
Between, now level parameter calculation formula is,
3) P is worked asL＜ PDa+PDiDuring+Δ P, now liquid level is relatively low, below 3 positions, and abnormal operational conditions, can be with
Corresponding prompting is provided when showing design, while providing general liquid level, level parameter calculation formula is：
Wherein, the liquid level (m) for the pulse extraction post that L measures for needs；LiThe pulse extraction post measured for needs
Interface location (m)；PLFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 1 and 5；PDaFor the pressure difference of the upper point-to-point transmission of expanding reach 1 and 2
(Pa)；PDiFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 2 and 3；HiFor the distance (m) of the upper point-to-point transmission of expanding reach 2 and 3；HDaFor
The distance (m) of the upper point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa)；DaFor aqueous phase densities (kg/m3)；DOFor organic phase
Density (kg/m3)；G is acceleration of gravity (m/s2)。
In a preferred embodiment, the present invention provides a kind of investigating method of nuclear chemical industry pulse extraction post, its
Described in aqueous phase continuous impulse extraction column interface parameter computational methods it is as follows：
1) P is worked asL≥PDa+PDiDuring+Δ P, liquid level is located at more than 4, and interface is between 2,3, and interfacial level computational methods are,
2) P is worked asL＜ PDa+PDiDuring+Δ P, liquid level is in below 3 positions, and judgement show that now interface is in improper technique
Running status, provides corresponding prompting, and provide P in display interfaceLPressure difference is shown, without carrying out computing interface location,
Wherein, the liquid level (m) for the pulse extraction post that L measures for needs；LiThe pulse extraction post measured for needs
Interface location (m)；PLFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 1 and 5；PDaFor the pressure difference of the upper point-to-point transmission of expanding reach 1 and 2
(Pa)；PDiFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 2 and 3；HiFor the distance (m) of the upper point-to-point transmission of expanding reach 2 and 3；HDaFor
The distance (m) of the upper point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa)；DaFor aqueous phase densities (kg/m3)；DOFor organic phase
Density (kg/m3)；G is acceleration of gravity (m/s2)。
In a preferred embodiment, the present invention provides a kind of investigating method of nuclear chemical industry pulse extraction post, its
Described in aqueous phase continuous impulse extraction column empty signal parameter judge in meet following formula show emptying complete：
PLs≤ΔP (7)
Wherein, PLsFor the pressure difference (Pa) of the lower point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa).
The beneficial effects of the present invention are utilize the nuclear chemical industry investigating method of pulse extraction post of the present invention, Neng Gougeng
Accurately to carry out observing and controlling with pulse extraction post to nuclear chemical industry.The present invention is based on that by advanced control system complexity can be realized
Computing, reaches this feature of higher TT＆C requirement, it is proposed that different positions in a kind of different zones by measuring pulse extraction post
Differential pressure method between putting, improves conventional operational formula, it is achieved thereby that to different types of pulse extraction post liquid level, interface and falling
Spacing wave first judges to measure again；A submergence deviation is added simultaneously the degree of accuracy is adjusted, and then provide measurement prompting
Or measurement result, make the operation of pulse extraction post more stable reliable.
Brief description of the drawings
Fig. 1 is organic phase continuous impulse extraction column observing and controlling parameter and principle schematic.
Fig. 2 is aqueous phase continuous impulse extraction column observing and controlling parameter and principle schematic.
Embodiment
The embodiment of the present invention is further illustrated below in conjunction with accompanying drawing.
First, organic phase continuous impulse extraction column observing and controlling
Exemplary organic phase continuous impulse extraction column observing and controlling principle is as shown in figure 1, when organic phase continuous impulse extraction column
During stable operation, level stability is in lower expanding reach at overfall, interface.By operation result of measurement and/or judge interface, empty letter
Number parameter carries out observing and controlling to the extraction of organic phase continuous impulse, and wherein interface parameter is expanded by calculating in Fig. 1 on pulse extraction column
Position pressure difference in section between 2 and 3 two points, judges, computing is drawn in combination with other pressure differences；Empty signal parameter and judge logical
The position pressure difference computing calculated in Fig. 1 under pulse extraction column in expanding reach between 1 and is crossed at 2 two points to draw.
In Fig. 1 lower expanding reach, 1 point close to lower expanding reach bottom, away from 10~35mm of bottom；2 points away from lower expanding reach bottom
At the 1/5~1/3 of whole lower expanding reach height；3 points are the 1/5~1/ of whole lower expanding reach height at the top of away from lower expanding reach
At 3；4 points at the top of the lower expanding reach, away from 20~60mm of top.In Fig. 1 upper expanding reach, 1 point, close to upper expanding reach bottom, is entered
Enter 0~30mm of plate section；2 points at the top of the upper expanding reach, away from 10~50mm at the top of upper expanding reach.
The computational methods of 1.1 interface parameters are as follows：
1) as Δ P≤PDo≤Do×g×HDo+ Δ P, that is, judge that interface is under lower 3 positions of expanding reach and 3 positions
When being immersed in organic phase, interface parameter calculation formula is,
2) P is worked asDoDuring≤Δ P, that is, descend 3 positions of expanding reach not submerge in a liquid, now represent extraction column not
It is operated in normal operating condition, it is not necessary to which interface is calculated, and needs to provide prompting, and shows corresponding differential pressure value,
In above-mentioned formula (1), LiTo need the interface location (m) of the pulse extraction post measured；PDoFor lower expanding reach 3 and 4
The pressure difference (Pa) of point-to-point transmission；PDiFor the pressure difference (Pa) of the lower point-to-point transmission of expanding reach 2 and 3；HiFor the lower point-to-point transmission of expanding reach 2 and 3
Distance (m)；HDaFor the distance (m) of the lower point-to-point transmission of expanding reach 1 and 2；HDoFor the distance (m) of the lower point-to-point transmission of expanding reach 1 and 2；Δ
P is submergence deviation (Pa)；DaFor aqueous phase densities (kg/m3)；DOFor organic phase density (kg/m3)；G is acceleration of gravity (m/
s2)。
1.2 emptying signal parameters meet following formula in judging and represent to empty completion：
In above-mentioned formula (2), PDaFor the pressure difference (Pa) of the lower point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa).
2nd, aqueous phase continuous impulse extraction column observing and controlling
Exemplary aqueous phase continuous impulse extraction column observing and controlling principle is as shown in Fig. 2 when aqueous phase continuous impulse extraction column is stable
During operation, level stability is in upper expanding reach at overfall, interface.By operation result of measurement and/or judge liquid level, interface, emptying
Signal parameter carries out observing and controlling to aqueous phase continuous impulse extraction column, and wherein level parameter is expanded by calculating in Fig. 2 on pulse extraction column
Position pressure difference computing in big section between 1 and 5 two points is drawn；Interface parameter is by calculating in Fig. 2 expanding reach on pulse extraction column
In position pressure difference between 2 and 3 two points, judge in combination with other pressure differences, computing is drawn；Signal parameter is emptied to judge to pass through
The position pressure difference computing in Fig. 2 under pulse extraction column between expanding reach 1 and is calculated at 2 two points to draw.
In Fig. 2 upper expanding reach, 1 point close to upper expanding reach bottom, into 0~30mm of plate section；2 points away from upper expanding reach bottom
Portion is at the 1/4~1/6 of whole upper expanding reach height；3 points at the top of away from upper expanding reach be expanding reach height on whole 2/5~
At 2/3；4 points concordant with upper expanding reach overfall；5 points at the top of the upper expanding reach, away from 10~50mm at the top of upper expanding reach.Fig. 2
Lower expanding reach in, 1 point close to lower expanding reach bottom, away from lower 10~35mm of expanding reach bottom；2 points at the top of the lower expanding reach,
Away from 10~40mm at the top of lower expanding reach.
2.1 level parameter computational methods are as follows：
1) P is worked asL≥PDa+PDiDuring+Δ P, that is, liquid level is judged more than the upper position of expanding reach 4, Δ P is in order to eliminate deviation
Influence, now level parameter calculation formula is,
2) P is worked asL＜ PDa+PDi+ Δ P and PDoDuring ＞ Δ P, that is, judge 3,4 positions of the liquid level now in upper expanding reach it
Between, now level parameter calculation formula is,
3) P is worked asL＜ PDa+PDiDuring+Δ P, now liquid level is relatively low, below 3 positions, and abnormal operational conditions, can be with
Corresponding prompting is provided when showing design, while providing general liquid level, level parameter calculation formula is：
In above-mentioned formula (3)-(5), the liquid level (m) for the pulse extraction post that L measures for needs；LiTo need what is measured
The interface location (m) of pulse extraction post；PLFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 1 and 5；PDaFor upper expanding reach 1 and 2 liang
Pressure difference (Pa) between point；PDiFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 2 and 3；HiFor the upper point-to-point transmission of expanding reach 2 and 3
Distance (m)；HDaFor the distance (m) of the upper point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa)；DaFor aqueous phase densities (kg/
m3)；DOFor organic phase density (kg/m3)；G is acceleration of gravity (m/s2)。
2.2 interface parameter computational methods are as follows：
1) P is worked asL≥PDa+PDiDuring+Δ P, liquid level is located at more than 4, and interface is between 2,3, and interfacial level computational methods are,
2) P is worked asL＜ PDa+PDiDuring+Δ P, liquid level is in below 3 positions, and judgement show that now interface is in improper technique
Running status, provides corresponding prompting, and provide P in display interfaceLPressure difference is shown, without carrying out computing interface location,
In above-mentioned formula (6), the liquid level (m) for the pulse extraction post that L measures for needs；LiTo need the pulse measured
The interface location (m) of extraction column；PLFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 1 and 5；PDaFor the upper point-to-point transmission of expanding reach 1 and 2
Pressure difference (Pa)；PDiFor the pressure difference (Pa) of the upper point-to-point transmission of expanding reach 2 and 3；HiFor the distance of the upper point-to-point transmission of expanding reach 2 and 3
(m)；HDaFor the distance (m) of the upper point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa)；DaFor aqueous phase densities (kg/m3)；DO
For organic phase density (kg/m3)；G is acceleration of gravity (m/s2)。
2.3 emptying signal parameters meet following formula in judging and show that emptying is completed：
PLs≤ΔP (7)
In above-mentioned formula (7), PLsFor the pressure difference (Pa) of the lower point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation (Pa).
Above aqueous phase densities DaIt can be obtained by 2 points in aqueous phase of pressure difference computing；Organic phase density DoCan be by having
2 points of pressure difference computing is obtained in machine phase, and also sampling measurement is obtained；The averag density D of aqueous phase and organic phaseiPass through average water
Mutually the density with organic phase is obtained.
The present invention solve during conventional pulse extraction post observing and controlling due to liquid level, interface location is uncertain and cause it is aobvious
Show inaccurate, it is impossible to the problem of understanding true running situation.But the present invention is not limited to above-mentioned situation, the present invention is same available
Other equipment that level gauging is carried out by pressure difference mode in nuclear fuel post processing field.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations to the present invention belong to the model of the claims in the present invention and its equivalent technology
Within enclosing, then the present invention is also intended to comprising including these changes and modification.Above-described embodiment or embodiment are simply to the present invention
For example, the present invention can also be implemented with other ad hoc fashions or other particular form, without departing from the present invention's
Main idea or substantive characteristics.Therefore, it is regarded as from the point of view of the embodiment of description is in terms of any illustrative and non-limiting.This
The scope of invention should be illustrated that any change equivalent with the intention and scope of claim should also be included by appended claims
Within the scope of the invention.
Claims (6)
1. a kind of nuclear chemical industry investigating method of pulse extraction post, it is characterised in that described investigating method is continuous to organic phase
Pulse extraction post and aqueous phase continuous impulse extraction column carry out observing and controlling by the following method respectively：
For described organic phase continuous impulse extraction column, by operation result of measurement and/or judge interface, empty signal parameter and carry out
Observing and controlling, wherein interface parameter are by the position pressure difference in expanding reach on the pulse extraction post described in calculating between 2 and 3 two points, together
When combine that other pressure differences judge, computing draws；Signal parameter is emptied to judge by under the pulse extraction post described in calculating expanding
Position pressure difference computing between 1 and 2 two points is drawn in section,
Wherein, in lower expanding reach, 1 point close to lower expanding reach bottom, away from 10~35mm of bottom；2 points are being whole away from lower expanding reach bottom
At the 1/5~1/3 of lower expanding reach height；3 points are entirely to descend at the 1/5~1/3 of expanding reach height at the top of away from lower expanding reach；4
Point is at the top of the lower expanding reach, away from 20~60mm of top, in upper expanding reach, 1 point close to upper expanding reach bottom, into plate section 0~
30mm；2 points at the top of the upper expanding reach, away from 10~50mm at the top of upper expanding reach,
For described aqueous phase continuous impulse extraction column, by operation result of measurement and/or judge liquid level, interface, empty signal parameter
Observing and controlling is carried out, wherein level parameter passes through the position pressure difference in expanding reach on the pulse extraction post described in calculating between 1 and at 5 two points
Computing is drawn；Interface parameter is by the position pressure difference in expanding reach on the pulse extraction post described in calculating between 2 and 3 two points, together
When combine that other pressure differences judge, computing draws；Signal parameter is emptied to judge by under the pulse extraction post described in calculating expanding
Section 1 and 2 two points between position pressure difference computing draw,
Wherein, in upper expanding reach, 1 point close to upper expanding reach bottom, into 0~30mm of plate section；2 points are being away from upper expanding reach bottom
At the 1/4~1/6 of whole upper expanding reach height；3 points are 2/5~2/3 of expanding reach height on whole at the top of away from upper expanding reach
Place；4 points concordant with upper expanding reach overfall；5 points at the top of the upper expanding reach, away from 10~50mm at the top of upper expanding reach, lower expansion
Duan Zhong, 1 point close to lower expanding reach bottom, away from lower 10~35mm of expanding reach bottom；2 points at the top of lower expanding reach, expand away from lower
10~40mm of section top.
2. investigating method according to claim 1, it is characterised in that：Described organic phase continuous impulse extraction column interface ginseng
Several computational methods are as follows,
1) as Δ P≤PDo≤Do×g×HDo+ Δ P, that is, judge that interface is under lower 3 positions of expanding reach and 3 position submergences
When in organic phase, interface parameter calculation formula is,
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2) P is worked asDoDuring≤Δ P, that is, descend 3 positions of expanding reach not submerge in a liquid, now represent that extraction column does not work
In normal operating condition, it is not necessary to calculate interface, and need to provide prompting, and show corresponding differential pressure value,
Wherein, LiTo need the interface location of the pulse extraction post measured；PDoFor the pressure difference of the lower point-to-point transmission of expanding reach 3 and 4；PDi
For the pressure difference of the lower point-to-point transmission of expanding reach 2 and 3；HiFor the distance of the lower point-to-point transmission of expanding reach 2 and 3；HDaFor lower expanding reach 1 and 2 liang
Distance between point；HDoFor the distance of the lower point-to-point transmission of expanding reach 3 and 4；Δ P is submergence deviation；DaFor aqueous phase densities；DOTo be organic
Phase density；G is acceleration of gravity.
3. investigating method according to claim 1, it is characterised in that：Described organic phase continuous impulse extraction column empties letter
Number parameter meets following formula and represents to empty in judging completes,
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Wherein, PDaFor the pressure difference of the lower point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation.
4. investigating method according to claim 1, it is characterised in that：Described aqueous phase continuous impulse extraction column level parameter
Computational methods are as follows,
1) P is worked asL≥PDa+PDiDuring+Δ P, that is, liquid level is judged more than the upper position of expanding reach 4, Δ P is in order to eliminate the shadow of deviation
Ring, now level parameter calculation formula is,
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2) P is worked asL＜ PDa+PDi+ Δ P and PDoDuring ＞ Δ P, that is, judge between 3,4 positions of the liquid level now in upper expanding reach, now
Level parameter calculation formula is,
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<msub>
<mi>D</mi>
<mi>o</mi>
</msub>
<mo>&times;</mo>
<mi>g</mi>
</mrow>
</mfrac>
<mo>+</mo>
<msub>
<mi>H</mi>
<mi>i</mi>
</msub>
<mo>+</mo>
<msub>
<mi>H</mi>
<msub>
<mi>D</mi>
<mi>a</mi>
</msub>
</msub>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>4</mn>
<mo>)</mo>
</mrow>
</mrow>
3) P is worked asL＜ PDa+PDiDuring+Δ P, now liquid level is relatively low, below 3 positions, and abnormal operational conditions, can be aobvious
Corresponding prompting is provided when showing design, while providing general liquid level, level parameter calculation formula is：
<mrow>
<mi>L</mi>
<mo>&ap;</mo>
<mfrac>
<msub>
<mi>P</mi>
<mi>L</mi>
</msub>
<mrow>
<mn>1</mn>
<mo>/</mo>
<mn>2</mn>
<mo>&times;</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>D</mi>
<mi>a</mi>
</msub>
<mo>+</mo>
<msub>
<mi>D</mi>
<mi>o</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, the liquid level for the pulse extraction post that L measures for needs；LiTo need the interface location of the pulse extraction post measured；
PLFor the pressure difference of the upper point-to-point transmission of expanding reach 1 and 5；PDaFor the pressure difference of the upper point-to-point transmission of expanding reach 1 and 2；PDiFor the upper He of expanding reach 2
The pressure difference of 3 point-to-point transmissions；HiFor the distance of the upper point-to-point transmission of expanding reach 2 and 3；HDaFor the distance of the upper point-to-point transmission of expanding reach 1 and 2；ΔP
For submergence deviation；DaFor aqueous phase densities；DOFor organic phase density；G is acceleration of gravity.
5. investigating method according to claim 1, it is characterised in that：Described aqueous phase continuous impulse extraction column interface parameter
Computational methods are as follows,
1) P is worked asL≥PDa+PDiDuring+Δ P, liquid level is located at more than 4, and interface is between 2,3, and interfacial level computational methods are,
<mrow>
<msub>
<mi>L</mi>
<mi>i</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>P</mi>
<msub>
<mi>D</mi>
<mi>i</mi>
</msub>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mi>o</mi>
</msub>
<mo>&times;</mo>
<mi>g</mi>
<mo>&times;</mo>
<msub>
<mi>H</mi>
<mi>i</mi>
</msub>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<mi>D</mi>
<mi>a</mi>
</msub>
<mo>-</mo>
<msub>
<mi>D</mi>
<mi>o</mi>
</msub>
<mo>)</mo>
<mo>&times;</mo>
<mi>g</mi>
</mrow>
</mfrac>
<mo>+</mo>
<msub>
<mi>H</mi>
<msub>
<mi>D</mi>
<mi>a</mi>
</msub>
</msub>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
2) P is worked asL＜ PDa+PDiDuring+Δ P, liquid level is in below 3 positions, and judgement show that now interface is in improper process operation
State, provides corresponding prompting, and provide P in display interfaceLPressure difference is shown, without carrying out computing interface location,
Wherein, the liquid level for the pulse extraction post that L measures for needs；LiTo need the interface location of the pulse extraction post measured；
PLFor the pressure difference of the upper point-to-point transmission of expanding reach 1 and 5；PDaFor the pressure difference of the upper point-to-point transmission of expanding reach 1 and 2；PDiFor the upper He of expanding reach 2
The pressure difference of 3 point-to-point transmissions；HiFor the distance of the upper point-to-point transmission of expanding reach 2 and 3；HDaFor the distance of the upper point-to-point transmission of expanding reach 1 and 2；ΔP
For submergence deviation；DaFor aqueous phase densities；DOFor organic phase density；G is acceleration of gravity.
6. investigating method according to claim 1, it is characterised in that：Described aqueous phase continuous impulse extraction column empties signal
Parameter meets following formula and shows that emptying is completed in judging,
PLs≤ΔP (7)
Wherein, PLsFor the pressure difference of the lower point-to-point transmission of expanding reach 1 and 2；Δ P is submergence deviation.
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| CN112614604A (en) * | 2020-11-26 | 2021-04-06 | 中国辐射防护研究院 | Pulse extraction column organic phase ignition accident source item estimation method |
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