CN218653734U

CN218653734U - Linkage type automatic measuring device of automatic operation system of absorption tower

Info

Publication number: CN218653734U
Application number: CN202222551964.8U
Authority: CN
Inventors: 秦绪毅; 刘兴康; 宓连村
Original assignee: Haihui Group Co ltd
Current assignee: Haihui Group Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-03-21
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses an automatic operating system coordinated type automatic measuring device of absorption tower is connected to the DCS interlocking automatic control system who is used for controlling the automatic operation of absorption tower, include the measuring tank that sets up through pipeline and absorption tower intercommunication, the import side cluster of measuring tank is equipped with the thick liquid pump, the outlet side cluster of measuring tank is equipped with the solenoid valve, install thick liquid parameter detection device in the measuring tank, the signal output part of thick liquid parameter detection device is connected with measured data processing apparatus, thick liquid pump, solenoid valve and measured data processing apparatus are connected to DCS interlocking automatic control system respectively; the device can detect the pH value and the density of slurry in the absorption tower in real time or at regular time, and timely supplement water, supplement desulfurizer or discharge slurry through a DCS (distributed control system) interlocking automatic control system, so that the absorption tower can be consistently in the optimal operation state, the desulfurization effect of pollutants is ensured, the effects of reducing the operation and maintenance cost, reducing the operation fault of field equipment, saving energy in operation and ensuring the service life of the equipment to the minimum degree are achieved.

Description

Linkage type automatic measuring device of automatic operation system of absorption tower

Technical Field

The utility model relates to a data detection technical field for the sweetener especially relates to an absorption tower automatic operation system coordinated type automatic measuring device.

Background

In the conventional desulfurization project of pollutants such as flue gas, the system operation is completed by mainly taking each operation parameter in a desulfurization island as a basis and matching with remote operation control, and the pH value and density data of slurry in an absorption tower are two important parameters for the system operation control. When the pH value of the slurry in the absorption tower is too low, the absorption reaction effect of the absorption tower is poor, and the safe emission of the flue gas is influenced; too high a pH will reduce the rate of gypsum formation, making the gypsum formed a thin paste which is not easy to clean. And when density is too high, can cause the overload operation of equipment such as agitator, oxidation fan, circulating pump in the absorption tower, be unfavorable for energy-conserving operation, cause simultaneously that to spray atomizing effect worsen, also can further influence the absorption reaction who inhales the absorption tower, lead to final flue gas emission value to rise, be difficult to reach emission standard.

The two terms in the island are also obtained by manual sampling detection. Generally, when the system is regulated and controlled each time, a worker is required to specially go to a field for sampling, then return to a laboratory for testing and measuring to obtain parameters, and finally transmit data to a control room to complete the regulation and control operation of the system in the control room. Therefore, the regulation and control process is complicated and low in efficiency, so that the system regulation and control has a large delay phenomenon, the system can be delayed from running in an optimal state to a certain extent, the running cost is increased to a great extent, and the standard discharge, the equipment running effect, the service life and the like after pollutant treatment can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can obtain pH value and density data automatically, help improving system's regulation and control speed, make the system be in best running state's absorption tower automatic operation system coordinated type automatic measuring device for a long time is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: absorption tower automatic operation system coordinated type automatic measuring device is connected to the DCS interlocking automatic control system who is used for controlling absorption tower automatic operation, include through the pipeline with the measuring tank that the absorption tower intercommunication set up, the cluster is equipped with on the pipeline of measuring tank import side and is used for with the partial thick liquid pump sending of absorption tower extremely measure the thick liquid pump in the jar, the cluster is equipped with the solenoid valve on the pipeline of measuring tank outlet side, install thick liquid parameter detection device in the measuring tank, thick liquid parameter detection device's signal output part is connected with measurement data processing apparatus, the thick liquid pump the solenoid valve with measurement data processing apparatus is connected to respectively DCS interlocking automatic control system.

Preferably, the slurry parameter detecting device comprises a PH meter for detecting the PH value of the slurry in the absorption tower and a density meter for detecting the density value of the slurry.

As a preferred technical scheme, the measurement data processing device comprises a microprocessor, a hard disk, a memory, a system bus and a communication module, and signal output ends of the PH meter and the densimeter are connected to the communication module.

As an improvement to the above technical solution, the communication module includes a wired communication interface or/and a wireless communication interface based on GPRS, WLAN, wi-Fi, and 5G technologies.

Due to the adoption of the technical scheme, the linked automatic measuring device of the automatic operating system of the absorption tower is connected to a DCS interlocking automatic control system for controlling the automatic operation of the absorption tower, and comprises a measuring tank communicated with the absorption tower through a pipeline, a slurry pump for pumping the partial slurry in the absorption tower into the measuring tank is serially arranged on the pipeline at the inlet side of the measuring tank, an electromagnetic valve is serially arranged on the pipeline at the outlet side of the measuring tank, a slurry parameter detecting device is arranged in the measuring tank, the signal output end of the slurry parameter detecting device is connected with a measured data processing device, and the slurry pump, the electromagnetic valve and the measured data processing device are respectively connected to the DCS interlocking automatic control system; the utility model discloses following beneficial effect has: through the cooperation of each part, can detect pH value and density of thick liquid in the absorption tower in real time or regularly, when above-mentioned numerical value appears unusually, carry out timely moisturizing, mend the desulfurizer or arrange the thick liquid through DCS interlocking automatic control system, make the absorption tower can be unanimously in the best running state to guarantee the desulfurization effect of pollutant, and corresponding part can be stopped control in time to open and stop, in order to reach and reduce operation, maintenance cost, reduce field device operation trouble, the energy-conserving and minimum equipment life's of operation effect of guaranteeing.

Drawings

The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention. Wherein:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic diagram of the combined application state of the embodiment of the present invention and the DCS interlocking automatic control system;

in the figure: 1-an absorption column; 2-measuring the tank; 3-a slurry pump; 4-an electromagnetic valve; 5-PH meter; 6-densitometer.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 and 2, the linked automatic measuring device of the absorption tower automatic operation system is connected to a DCS interlocking automatic control system for controlling the automatic operation of the absorption tower 1 in the desulfurization island, so that when sulfur dioxide pollutants in combustion waste flue gas are desulfurized, part of parameters in the desulfurization island can be timely fed back to the hands of operators, that is, under the control and combination of the DCS interlocking automatic control system, the PH value and the density of slurry in the absorption tower 1 can be timely detected, and when the values are abnormal, timely water supplement, desulfurizer supplement or slurry discharge is performed through the DCS interlocking automatic control system, so that the absorption tower 1 can be consistently in an optimal operation state, and the desulfurization effect of the pollutants is ensured. Specifically include through the pipeline with the measuring tank 2 that absorption tower 1 intercommunication set up, the cluster is equipped with on the pipeline of measuring tank 2 import side and is used for with 1 internal portion thick liquid pump 3 of absorption tower sends to the thick liquid pump 3 in the measuring tank 2, the cluster is equipped with solenoid valve 4 on the pipeline of 2 outlet sides of measuring tank, thick liquid pump 3 with solenoid valve 4 is connected to respectively DCS interlocking automatic control system. When the pH value and the density of the slurry in the absorption tower 1 need to be detected, the DCS interlocking automatic control system controls the slurry pump 3 to be started, and the electromagnetic valve 4 is opened, so that part of the slurry in the absorption tower 1 can be pumped into the measuring tank 2 under the action of the slurry pump 3 for detection. When detection is not needed, the DCS interlocking automatic control system controls the slurry pump 3 to stop and the electromagnetic valve 4 to be closed, so that the slurry pump 3, the measuring tank 2 and the electromagnetic valve 4 form a set of independent circulating pipeline system on the absorption tower 1.

And a slurry parameter detection device is arranged in the measurement tank 2 and used for realizing the detection of the pH value and the density of the slurry entering the measurement tank 2. The slurry parameter detection device comprises a PH meter 5 for detecting the PH value of the slurry in the absorption tower 1 and a densimeter 6 for detecting the density value of the slurry, when the slurry pump 3 and the electromagnetic valve 4 are started, the measuring tank 2 is filled with the slurry, the PH meter 5 and the densimeter 6 can detect corresponding data, and the detection of the PH value and the density of the slurry is realized.

And the signal output end of the slurry parameter detection device is connected with a measured data processing device, and the measured data processing device is respectively connected to the DCS interlocking automatic control system. The measurement data processing device is used for receiving the data detected by the PH meter 5 and the densimeter 6, processing the data and then transmitting the processed data to the remote DCS interlocking automatic control system, so that the DCS interlocking automatic control system starts a corresponding control strategy according to the detected value. Specifically, the measured data processing device includes microprocessor, hard disk, memory, system bus and communication module, PH meter 5 with densimeter 6's signal output part is connected to communication module, just communication module includes wired communication interface or/and the wireless communication interface based on GPRS, WLAN, wi-Fi and 5G technique to realize the receipt of on-the-spot measuring data, handle and the transport of remote data.

DCS interlocking automatic control system is equipped with thick liquid circulating device, fire water installation, defroster sparge water device, the former flue gas of unit, accident thick liquid pond device, process water installation, waste water recovery device, oxidation air device, desulfurizer thick liquid device and gypsum eduction gear etc. and all correspond in some devices and be equipped with corresponding pump, like thick liquid circulating pump, arrange the stuff pump, desulfurizer confession stuff pump, process water moisturizing pump, washing water pump etc. and be the content that this technical field ordinary skilled person is familiar with, do not describe in detail here.

The working process of this embodiment is as follows:

and continuously or periodically and discontinuously pumping the slurry in the tower into the measuring tank 2 by the slurry pump 3, and obtaining the pH value and the density of the slurry in the current stage by the pH meter 5 and the densimeter 6 which are arranged in the measuring tank 2, so that the slurry can return to the absorption tower 1 after automatic measurement, and the real-time or timed sampling and detection of the slurry are realized. The detection data of the PH meter 5 and the densimeter 6 are converted and processed by the measurement data processing device, transmitted to the remote DCS interlocking automatic control system and fed back to the operation interface of the DCS interlocking automatic control system. An operator can set interlocking data according to actual operation conditions on site, for example, when the pH value of the slurry in the absorption tower 1 is reduced to a certain degree, the desulfurizing agent slurry supply pump is started in an interlocking manner, the slurry is supplied to the absorption tower 1, and when the pH value of the slurry in the absorption tower 1 is raised back to the set interlocking data, the desulfurizing agent slurry supply pump can be automatically stopped to supply slurry. When the density value that densimeter 6 feedbacks increases the interlocking data that operating personnel predetermine, under the circumstances that the pH value of thick liquid reached the interlocking numerical value that allows to arrange the thick liquid simultaneously, DCS interlocking automatic control system can open automatically arrange the thick liquid pump and arrange the thick liquid, and the thick liquid of discharge links vacuum belt feeder or pressure filter again and carries out the gypsum desorption. After slurry is discharged, the DCS interlocking automatic control system can automatically start the process water replenishing pump or the flushing water pump for replenishing water according to the liquid level of the absorption tower 1, and automatically stop discharging slurry after the density in the absorption tower 1 is reduced to a standard value so as to ensure that the slurry in the tower is always in a healthy reaction state. The setting of the interlocking data and the interlocking control of each device are the conventional setting and adjustment in the DCS interlocking automatic control system, and are not described in detail here.

It can be seen that the present embodiment has the following advantages:

1. the pH value and the density of the slurry in the absorption tower can be accurately measured in real time and transmitted to a remote DCS interlocking automatic control system.

2. The measured data is interlocked with control data, equipment and the like in the DCS interlocking automatic control system, so that automatic control is realized according to the detection data of the PH value and the density.

3. And the linkage equipment in the desulfurization island adjusts the operation in real time according to the feedback, so that the reaction state of the slurry can be improved in time.

4. The corresponding parts can be timely controlled to be started and stopped, the effects of reducing the running and maintenance cost, reducing the running faults of field equipment, saving running energy, ensuring the service life of the equipment to the minimum degree and ensuring the standard emission of the flue gas to the great degree are achieved.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. Absorption tower automatic operation system coordinated type automatic measuring device is connected to the DCS interlocking automatic control system who is used for controlling absorption tower automatic operation, its characterized in that: include through the pipeline with the measuring tank that the absorption tower intercommunication set up, the cluster is equipped with on the pipeline of measuring tank import side be used for with the partial thick liquid pump in the absorption tower extremely measure the thick liquid pump in the jar, the cluster is equipped with the solenoid valve on the pipeline of measuring tank export side, install thick liquid parameter detection device in the measuring tank, thick liquid parameter detection device's signal output part is connected with measured data processing apparatus, the thick liquid pump the solenoid valve with measured data processing apparatus is connected to respectively DCS interlocking automatic control system.

2. The linked automatic measuring device of the automatic operating system of the absorption tower according to claim 1, wherein: the slurry parameter detection device comprises a PH meter for detecting the PH value of the slurry in the absorption tower and a densimeter for detecting the density value of the slurry.

3. The linked automatic measuring device of the automatic operating system of the absorption tower according to claim 2, wherein: the measurement data processing device comprises a microprocessor, a hard disk, a memory, a system bus and a communication module, and the signal output ends of the PH meter and the densimeter are connected to the communication module.

4. The linked automatic measuring device of the automatic operating system of the absorption tower according to claim 3, wherein: the communication module comprises a wired communication interface or/and a wireless communication interface based on GPRS, WLAN, wi-Fi and 5G technologies.