CN210533086U

CN210533086U - Full-automatic separation and conveying control device for condensed water in ammonium phosphate plant

Info

Publication number: CN210533086U
Application number: CN201921344045.5U
Authority: CN
Inventors: 黄建林
Original assignee: Sinochem Fuling Chongqing Chemical Industry Co Ltd
Current assignee: Sinochem Fuling Chongqing Chemical Industry Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-05-15
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a full-automatic separation and conveying control device for condensed water in an ammonium phosphate plant, which comprises a storage tank and a first pipeline, wherein the tail end of the first pipeline is connected with the head end of a second pipeline through a pneumatic switch ball valve FV1, and the tail end of the second pipeline is connected with the storage tank; the tail end of the first pipeline is connected with the head end of a third pipeline through a pneumatic switch ball valve FV2, and the tail end of the third pipeline is connected into a storage tank; the device also comprises a detection cylinder and an online conductivity analyzer; an inlet of the detection cylinder is connected with the head end of the first pipeline, and an outlet of the detection cylinder is connected into the storage tank; a probe AT of the online conductivity analyzer is arranged in the detection cylinder; the probe AT is connected with the transmitter AIC; the first switch of the transmitter AIC controls the switch of a pneumatic switch ball valve FV1, and the second switch of the transmitter AIC controls the switch of a pneumatic switch ball valve FV 2. The utility model discloses carry storage tank and storage tank respectively with the comdenstion water up to standard and not up to standard of ammonium phosphate factory balance tank output during, need not artifical analysis phosphate radical index.

Description

Full-automatic separation and conveying control device for condensed water in ammonium phosphate plant

Technical Field

The utility model relates to a chemical industry equipment technical field especially relates to a full autosegregation of ammonium phosphate factory comdenstion water and transport controlling means.

Background

The prior art has the defects that condensed water generated in the concentration process of the ammonium phosphate plant directly flows into a storage tank in the attached drawing 1 from a balance tank in the process, the condensed water is conveyed to a water storage tank of a sulfonic acid making system of the ammonium phosphate plant by controlling a condensed water pump WP1, then the phosphate radical index is analyzed through manual test, and the condensed water is supplied to a waste heat boiler of the sulfonic acid making system for use after reaching the standard. Two problems occur, firstly, the period of manual analysis of condensed water is long and the analyzed index fluctuates greatly due to manual factors. And after the phosphate radical index of the condensed water is analyzed to exceed the standard, the condensed water in the water storage tank of the sulfonic acid making system cannot be directly supplied to the waste heat boiler for use, so that the unqualified condensed water is conveyed to the water treatment device of the sulfonic acid making system through a pipeline for carrying out standard treatment again, and the qualified condensed water can be supplied to the waste heat boiler for use, so that the operation cost and the burden of the water treatment device are increased.

SUMMERY OF THE UTILITY MODEL

In view of prior art's at least one defect, the utility model aims at providing a full autosegregation of phosphorus ammonium factory comdenstion water and carry controlling means, this device utilizes the switch of the pneumatic switch ball valve FV1 on the online conductivity analyzer control installation on the second pipeline and the pneumatic switch ball valve FV2 on the third pipeline, with during storage tank and storage tank are carried respectively to the comdenstion water up to standard and not up to standard of balance tank output, need not manual analysis phosphate index.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a full-automatic separation and conveying control device for condensed water in an ammonium phosphate plant comprises a storage tank and a first pipeline, wherein the head end of the first pipeline is connected with a balance tank; the device is characterized in that the tail end of the first pipeline is connected with the head end of the second pipeline through a pneumatic switch ball valve FV1, and the tail end of the second pipeline is connected into a storage tank;

the tail end of the first pipeline is connected with the head end of a third pipeline through a pneumatic switch ball valve FV2, and the tail end of the third pipeline is connected into the storage tank;

the device also comprises a detection cylinder and an online conductivity analyzer; an inlet of the detection cylinder is connected with the head end of the first pipeline through a fourth pipeline, and an outlet of the detection cylinder is connected into the storage tank through a fifth pipeline; the online conductivity analyzer is provided with a probe AT and a transmitter AIC, wherein the probe AT is arranged in the detection cylinder; the probe AT is connected with the transmitter AIC;

the first switch NO1 of the transmitter AIC controls the opening and closing of the pneumatic switch ball valve FV1, and the second switch NO2 of the transmitter AIC controls the opening and closing of the pneumatic switch ball valve FV 2.

The working principle of the invention is that condensed water from the equalizing tank in the concentration process enters the detection cylinder through the first pipeline and the fourth pipeline and flows into the storage tank through the fifth pipeline. AT the moment, a probe AT of the online conductivity analyzer installed in the detection cylinder converts the detected conductivity value of the condensed water into an electric signal and transmits the electric signal to a transmitter AIC of the online conductivity analyzer, and the AIC displays the real-time conductivity value of the condensed water and simultaneously makes corresponding switch output. When the conductivity of the condensed water is smaller than or equal to an alarm value set by an online conductivity analyzer transmitter AIC, a first switch NO1 of the transmitter AIC is closed, a second switch NO2 of the transmitter AIC is opened, the first switch NO1 drives a pneumatic switch ball valve FV1 to be opened, and the qualified condensed water flows into the storage tank through the first pipeline and the second pipeline. When the conductivity of the condensed water is larger than the alarm value set by the online conductivity analyzer transmitter AIC, a second switch NO2 of the transmitter AIC is closed, a first switch NO1 of the transmitter AIC is opened, a second switch NO2 drives a pneumatic switch ball valve FV2 to be opened, and the unqualified condensed water flows into the storage tank through the first pipeline and the third pipeline. The phosphate radical index does not need to be manually analyzed.

The fourth pipeline is far smaller than the flow rates of the first pipeline, the second pipeline and the third pipeline and is only used for detection and sampling of the probe AT.

The fourth conduit is provided with a manual needle valve HV1 and the fifth conduit is provided with a manual needle valve HV 2.

The user manually opens the manual needle valve HV1 and the manual needle valve HV2, and the condensed water flows into the test cartridge through the manual needle valve HV1 and then into the reservoir through the manual needle valve HV 2.

A first switch NO1 of the transmitter AIC controls the on-off of a solenoid valve YV1, a solenoid valve YV1 controls the on-off of a pneumatic switch ball valve FV1, a second switch NO2 of the transmitter AIC controls the on-off of a solenoid valve YV2, and a solenoid valve YV2 controls the on-off of a pneumatic switch ball valve FV 2.

When a first switch NO1 of the transmitter AIC is closed, the control solenoid valve YV1 is electrified, otherwise, the control solenoid valve YV1 is powered off, when the solenoid valve YV1 is electrified, the pneumatic switch ball valve FV1 is controlled to be opened, and when the solenoid valve YV1 is powered off, the pneumatic switch ball valve FV1 is controlled to be closed.

When a second switch NO2 of the transmitter AIC is closed, the control solenoid valve YV2 is electrified, otherwise, the control solenoid valve YV2 is powered off, and when the solenoid valve YV2 is electrified, the pneumatic switch ball valve FV2 is controlled to be opened. On the contrary, when the electromagnetic valve YV2 is powered off, the pneumatic switch ball valve FV2 is controlled to be closed.

The first switch NO1 of transmitter AIC is connected with the PLC controller, and the PLC controller control solenoid valve YV1 break-make electricity, and the PLC controller is also connected to the second switch NO2 of transmitter AIC, and the PLC controller control solenoid valve YV2 break-make electricity.

The PLC is used for controlling, the circuit is simple, and the control is convenient.

The utility model provides a full autosegregation of phosphorus ammonium factory comdenstion water and transport controlling means, this device application online conductivity analyzer control install on the second pipeline pneumatic switch ball valve FV1 and the third pipeline on the switch of pneumatic switch ball valve FV2, carry storage tank and storage tank respectively with the comdenstion water up to standard and not up to standard of balance tank output among, need not artifical analysis phosphate radical index.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a circuit diagram of a PLC controller;

fig. 3 is a control circuit diagram of the condensed water pump WP1 and the condensed water pump WP 2;

fig. 4 is a diagram showing an internal logic circuit of the PLC controller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, a full-automatic separation and transportation control device for ammonium phosphate plant condensed water comprises a storage tank 1 and a first pipeline 4, wherein the head end of the first pipeline 4 is connected with a balance tank; the device is characterized in that the tail end of a first pipeline 4 is connected with the head end of a second pipeline 5 through a pneumatic switch ball valve FV1, and the tail end of the second pipeline 5 is connected into a storage tank 1;

the device also comprises a storage tank 2, the tail end of the first pipeline 4 is connected with the head end of a third pipeline 6 through a pneumatic switch ball valve FV2, and the tail end of the third pipeline 6 is connected into the storage tank 2;

the device also comprises a detection cylinder 3 and an online conductivity analyzer; an inlet of the detection barrel 3 is connected with the head end of the first pipeline 4 through a fourth pipeline 7, and an outlet of the detection barrel 3 is connected into the storage tank 2 through a fifth pipeline 8; the online conductivity analyzer is provided with a probe AT and a transmitter AIC, and the probe AT is arranged in the detection cylinder 3; the probe AT is connected with the transmitter AIC;

The operation of the device will be described in detail with reference to the electrical schematic diagrams and the PLC controller shown in fig. 1, 2 and 3. First, the manual needle valves HV1 and HV2 at the inlet and outlet of the detection cylinder 3 in fig. 1 are opened, and the circuit breakers QF1, QF2, QF3, and QF4 in fig. 2 and 3 are closed. When the condensed water from the equalizing tank of the concentration process enters the detection cylinder 3 through the first pipeline 4 and the fourth pipeline 7, the condensed water flows into the storage tank 2 through the fifth pipeline 8. AT this time, a probe AT of the online conductivity analyzer installed in the detection cylinder 3 converts the detected conductivity value of the condensed water into an electric signal and transmits the electric signal to a transmitter AIC of the online conductivity analyzer, and the transmitter AIC displays the real-time conductivity value of the condensed water and simultaneously outputs corresponding contact switches. When the conductivity of the condensed water is less than or equal to the alarm value set by the online conductivity analyzer transmitter AIC, a first switch NO1 of the transmitter AIC is closed, a high level is input at an I1 end of the PLC controller, a relay output switch Q1 of the PLC controller is closed, so that a coil of the electromagnetic valve YV1 is electrified, the electromagnetic valve YV1 acts to convey instrument compressed air in the sixth pipeline 11 to drive the pneumatic switch ball valve FV1 to be opened, and the qualified condensed water flows into the storage tank 1 through the first pipeline 4 and the second pipeline 5. When the conductivity of the condensed water is greater than the alarm value set by the online conductivity analyzer transmitter AIC, the second switch NO2 of the transmitter AIC is closed, the I2 end of the PLC inputs a high level, the relay output switch Q2 is closed, so that the coil of the electromagnetic valve YV2 is electrified, the electromagnetic valve YV2 acts to deliver the instrument compressed air in the sixth pipeline 11 to drive the pneumatic switch ball valve FV2 to be opened, and the unqualified condensed water flows into the storage tank 2 through the first pipeline 4 and the third pipeline 6. The PLC is combined with an online conductivity analyzer to control a pneumatic switch ball valve FV1 and a pneumatic switch ball valve FV2 switch which are arranged between a first pipeline 4 and a second pipeline 5 of condensed water and a third pipeline 6 of condensed water, and the qualified and unqualified condensed water is respectively conveyed to a storage tank 1 and a storage tank 2. The PLC controller adopts a Siemens LOGO 203RCE PLC controller, an online conductivity analyzer transmitter AIC, a probe AT adopts an online conductivity analyzer of a Japanese river, the transmitters are all existing mature products, the transmitter AIC is FLXA-21 in model, and the probe AT is an ECD-A electrode type sensor.

A float switch LS1 is arranged at the upper part of the storage tank 1, and a float switch LS2 is arranged at the lower part of the storage tank 1; the storage tank 1 is provided with a condensed water pump WP1, an inlet of the condensed water pump WP1 is connected with the bottom of the storage tank 1, and an outlet of the condensed water pump WP1 is connected with a sulfonic acid making system of a phosphorus ammonium plant; the method does not need to manually analyze indexes and is directly supplied to a waste heat boiler for use;

the float switch LS1 and the float switch LS2 are connected with a PLC controller, and the PLC controller controls the switch of a condensed water pump WP1 through a frequency converter UF 1.

A float switch LS3 is arranged at the upper part of the storage tank 2, and a float switch LS4 is arranged at the lower part of the storage tank 2; the storage tank 2 is provided with a condensed water pump WP2, the inlet of the condensed water pump WP2 is connected with the bottom of the storage tank 2, and the outlet of the condensed water pump WP2 is connected with a process water collecting tank of an ammonium phosphate plant; the substandard waste water is conveyed to a process water collecting tank of a phosphorus ammonium plant and is directly used for washing extraction tail gas and washing a disc filter nearby.

The float switch LS3 and the float switch LS4 are connected with a PLC controller, and the PLC controller controls the switch of a condensed water pump WP2 through a frequency converter UF 2.

After the qualified and unqualified condensed water is respectively conveyed to the storage tank 1 and the storage tank 2, the device conveys the condensed water in the storage tank 1 and the storage tank 2 to corresponding systems for reuse, and the operation mechanism of the method is described in detail below. When the liquid levels of the storage tank 1 and the storage tank 2 do not reach the heights of the float switch LS2 and the float switch LS4 respectively, the contact switches of the float switch LS1, the float switch LS2, the float switch LS3 and the float switch LS4 are not closed, the I3 end, the I4 end, the I5 end and the I6 end of the PLC are all low levels, the corresponding contact switch Q3 and the corresponding contact switch Q4 are in an open state, coils of the intermediate relay KA1 and the intermediate relay KA2 are not electrified, a normally open switch KA1-1 of the intermediate relay KA1 and a normally open switch KA2-1 of the intermediate relay KA2 are not closed, the frequency converter UF1 and the frequency converter UF2 are in a stop state, and the corresponding condensed water pump WP1 and condensed water pump WP2 do not run; when the liquid levels of the storage tank 1 and the storage tank 2 continue to rise and respectively exceed the float switch LS2 and the float switch LS4 at the heights but are still respectively lower than the float switch LS1 and the float switch LS3, the contact switches of the float switch LS1 and the float switch LS3 are not closed, the contact switches of the float switch LS2 and the float switch LS4 are closed, the I3 end and the I5 end of the PLC are low-level, the I4 end and the I6 end are high-level, the corresponding contact switch Q3 and the corresponding contact switch Q4 are still in an open state, the coils of the intermediate relay KA1 and the intermediate relay KA2 are still not electrified, the normally open contact switches KA1-1 and KA2-1 of the intermediate relay KA1 and the intermediate relay KA2 are not closed, and therefore the frequency converters UF1 and UF2 are still in a stop state, and the corresponding condensed water pump WP1 and condensed water pump 2 do not operate; when the liquid levels of the storage tank 1 and the storage tank 2 respectively reach the heights of a floating ball switch LS1 and a floating ball switch LS3, contact switches of the floating ball switch LS1, the floating ball switch LS2, the floating ball switch LS3 and the floating ball switch LS4 are closed, the I3 end, the I4 end, the I5 end and the I6 end controlled by the PLC are high in level, the corresponding contact switch Q3 and the corresponding contact switch Q4 are in a closed state, coils of the intermediate relay KA1 and the intermediate relay KA2 are electrified, the normally open contact switches KA1-1 and KA2-1 of the intermediate relay KA1 and the intermediate relay KA2 are closed, and accordingly the frequency converter UF1 and the frequency converter UF2 are started and operate, and the corresponding condensed water pump WP1 and condensed water pump WP2 start to operate. After the condensed water pump WP1 and the condensed water pump WP2 start to operate, the liquid levels in the storage tank 1 and the storage tank 2 start to fall, when the liquid levels in the storage tank 1 and the storage tank 2 respectively exceed the float switch LS2 and the float switch LS4 but are respectively lower than the float switch LS1 and the float switch LS3, the contact switches of the float switch LS1 and the float switch LS3 are disconnected, the contact switches of the float switch LS2 and the float switch LS4 are still closed, the I3 end and the I5 end of the PLC controller are in low level, the I4 end and the I6 end are in high level, because in the state, when the liquid levels of the storage tank 1 and the storage tank 2 reach the heights of the normally open switch LS1 and the float switch LS3, the contact switch Q3 and the contact switch Q4 of the PLC controller are closed, and in combination with a picture 4, the contact switch Q3 and the contact switch Q4 are still closed, the coil of the normally open relay 1 and the relay KA 7 and the relay KA 72-2-KA 72 are still closed, and the relay KA 72-1 is still connected, The normally open contact switch KA2-1 is also closed, so that the frequency converter UF1 and the frequency converter UF2 start to continue to operate, and the corresponding condensate water pump WP1 and the corresponding condensate water pump WP2 continue to operate. When the liquid levels of the storage tank 1 and the storage tank 2 continue to fall and return to be lower than the floating ball switch LS2 and the floating ball switch LS4, the contact switches of the floating ball switch LS2 and the floating ball switch LS4 are disconnected again, the I3 end, the I4 end, the I5 end and the I6 end of the PLC are at low levels, the corresponding contact switch Q3 and the corresponding contact switch Q4 are disconnected, the coils of the intermediate relay KA1 and the intermediate relay KA2 cannot be electrified, the normally-open contact switches KA1-1 and KA2-1 of the intermediate relay KA1 and the intermediate relay KA2 cannot be closed, the frequency converter UF1 and the frequency converter UF2 are in a stop state, and the corresponding condensed water pump WP1 and the condensed water pump WP2 cannot operate; the automatic conveying and the liquid level control of the condensed water in the storage tank 1 and the storage tank 2 are realized in cycles. In FIG. 2, T is a control transformer for supplying the solenoid valve YV1 and the solenoid valve YV2 with 220Vac reduced to 24 Vac.

The operation principle of discharging the condensed water through the condensed water pump WP1 and the condensed water pump WP2, respectively, of the storage tank 1 and the storage tank 2 is the same.

FIG. 4 is a diagram of the internal logic circuit of the PLC controller; where the X terminal is floating, indicating that the input is "0", it is apparent that the PLC controller may also be replaced with the or gate and gate combinational logic circuit of fig. 4.

Finally, it is noted that: the above list is only the concrete implementation example of the present invention, and of course those skilled in the art can make modifications and variations to the present invention, and if these modifications and variations fall within the scope of the claims of the present invention and their equivalent technology, they should be considered as the protection scope of the present invention.

Claims

1. A full-automatic separation and conveying control device for condensed water in an ammonium phosphate plant comprises a storage tank (1) and a first pipeline (4), wherein the head end of the first pipeline (4) is connected with a balance tank; the device is characterized in that the tail end of a first pipeline (4) is connected with the head end of a second pipeline (5) through a pneumatic switch ball valve FV1, and the tail end of the second pipeline (5) is connected into a storage tank (1);

the tail end of the first pipeline (4) is connected with the head end of the third pipeline (6) through a pneumatic switch ball valve FV2, and the tail end of the third pipeline (6) is connected into the storage tank (2);

the device also comprises a detection cylinder (3) and an online conductivity analyzer; an inlet of the detection barrel (3) is connected with the head end of the first pipeline (4) through a fourth pipeline (7), and an outlet of the detection barrel (3) is connected into the storage tank (2) through a fifth pipeline (8); the online conductivity analyzer is provided with a probe AT and a transmitter AIC, and the probe AT is arranged in the detection cylinder (3); the probe AT is connected with the transmitter AIC;

2. The fully automatic separation and transportation control device of ammonium phosphate plant condensed water according to claim 1, characterized in that: the fourth conduit (7) is provided with a manual needle valve HV1 and the fifth conduit (8) is provided with a manual needle valve HV 2.

3. The fully automatic separation and transportation control device of ammonium phosphate plant condensed water according to claim 1, characterized in that: a first switch NO1 of the transmitter AIC controls the on-off of a solenoid valve YV1, a solenoid valve YV1 controls the on-off of a pneumatic switch ball valve FV1, a second switch NO2 of the transmitter AIC controls the on-off of a solenoid valve YV2, and a solenoid valve YV2 controls the on-off of a pneumatic switch ball valve FV 2.

4. The fully automatic separation and transportation control device of ammonium phosphate plant condensed water according to claim 3, characterized in that: the first switch NO1 of transmitter AIC is connected with the PLC controller, and the PLC controller control solenoid valve YV1 break-make electricity, and the PLC controller is also connected to transmitter AIC's second switch NO2, and the PLC controller control solenoid valve YV2 break-make electricity.

5. The fully automatic separation and transportation control device of ammonium phosphate plant condensed water according to claim 4, characterized in that: a float switch LS1 is arranged at the upper part of the storage tank (1), and a float switch LS2 is arranged at the lower part of the storage tank (1); the storage tank (1) is provided with a condensed water pump WP1, an inlet of the condensed water pump WP1 is connected with the bottom of the storage tank (1), and an outlet of the condensed water pump WP1 is connected with a sulfonic acid making system of an ammonium phosphate plant;

6. The fully automatic separation and transportation control device of ammonium phosphate plant condensed water according to claim 4, characterized in that: a float switch LS3 is arranged at the upper part of the storage tank (2), and a float switch LS4 is arranged at the lower part of the storage tank (2); the storage tank (2) is provided with a condensed water pump WP2, the inlet of the condensed water pump WP2 is connected with the bottom of the storage tank (2), and the outlet of the condensed water pump WP2 is connected with a process water collecting tank of an ammonium phosphate plant;