阅读说明：本技术 一种滤布式圆盘脱水机系统及其智能控制方法 (Filter cloth type disc dehydrator system and intelligent control method thereof ) 是由 徐滔 李建平 童华斌 曲振河 赵斌 刘清乐 邱逢涛 曲师捷 张瑞宝 陈兴云 黎子 于 2021-08-13 设计创作，主要内容包括：本发明涉及火电厂石膏脱水设备技术领域,更具体而言,涉及一种滤布式圆盘脱水机系统及其智能控制方法。包括圆盘脱水机、汽水分离器、石膏旋流器、排出泵；圆盘脱水机的主轴电机电性连接有第一变频器；排出泵电性连接有第二变频器；圆盘脱水机与汽水分离器连接管路上设置有第一电磁阀；工艺水管上设置有第二电磁阀；圆盘脱水机设置有液位检测装置与厚度检测装置；第一变频器、第二变频器、第一电磁阀、第二电磁阀、液位检测装置与厚度检测装置分别电性连接控制系统。提高了调整的实时性和精细化,有效降低了系统磨损腐蚀,降低了脱硫系统厂用电率,提高了脱硫副产品石膏的品质,增加了故障判断等功能,实现了脱水系统智能优化运行。(The invention relates to the technical field of gypsum dewatering equipment in a thermal power plant, in particular to a filter cloth type disc dewatering machine system and an intelligent control method thereof. Comprises a disc dehydrator, a steam-water separator, a gypsum cyclone and a discharge pump; a spindle motor of the disc dehydrator is electrically connected with a first frequency converter; the discharge pump is electrically connected with a second frequency converter; a first electromagnetic valve is arranged on a connecting pipeline of the disc dehydrator and the steam-water separator; a second electromagnetic valve is arranged on the process water pipe; the disc dehydrator is provided with a liquid level detection device and a thickness detection device; the first frequency converter, the second frequency converter, the first electromagnetic valve, the second electromagnetic valve, the liquid level detection device and the thickness detection device are respectively electrically connected with the control system. The real-time performance and the fineness of adjustment are improved, the system abrasion corrosion is effectively reduced, the plant power consumption rate of a desulfurization system is reduced, the quality of desulfurization byproduct gypsum is improved, functions such as fault judgment are added, and the intelligent optimized operation of a dehydration system is realized.)

1. The utility model provides a filter cloth formula disc hydroextractor system which characterized in that: comprises a disc dehydrator, a steam-water separator, a gypsum cyclone and a discharge pump; the feed inlet of the gypsum cyclone is connected with the discharge pump, and the discharge outlet of the gypsum cyclone is connected with the slurry tank of the disc dehydrator; the tank body of the disc dehydrator is connected with a process water pipeline; the disc dehydrator is connected with the steam-water separator; the feed inlet of the cyclone is connected with the gypsum slurry discharge pump;

a spindle motor of the disc dehydrator is electrically connected with a first frequency converter; the discharge pump is electrically connected with a second frequency converter; a first electromagnetic valve is arranged on a connecting pipeline of the disc dehydrator and the steam-water separator; the process water pipe is provided with a second electromagnetic valve; the disc dehydrator is provided with a liquid level detection device and a thickness detection device;

the first frequency converter, the second frequency converter, the first electromagnetic valve, the second electromagnetic valve, the liquid level detection device and the thickness detection device are respectively electrically connected with the control system.

2. A filter cloth disc dehydrator system according to claim 1, wherein: the liquid level detection device adopts an ultrasonic liquid level sensor.

3. A filter cloth disc dehydrator system according to claim 1, wherein: the thickness detection device adopts a laser gypsum thickness meter.

4. An intelligent control method of a filter cloth type disc dehydrator system, which is characterized in that the system of any one of claims 1-3 is adopted, and the control method comprises the following steps: the control system controls the liquid level of the trough body, the vacuum degree of the steam-water separator and the thickness of the disc gypsum.

5. The intelligent control method of the filter cloth type disc dehydrator system of claim 4, wherein the control of the tank body liquid level comprises the following steps:

s1, when the liquid level of the tank body is lower than a set value, the liquid level detection device detects a liquid level signal of the tank body and transmits the signal to the control system, and the control system controls the frequency converter of the discharge pump to increase the frequency;

s2, when the frequency is increased to the highest pressure limit of the gypsum cyclone and the liquid level still cannot meet the requirement, the control system controls the second electromagnetic valve to increase the opening degree and add water to the tank body;

s3, when the liquid level of the tank body cannot be met through the operations of the steps S1 and S2, the control system controls the first electromagnetic valve to reduce the opening degree;

s4, when the liquid level of the tank body still cannot be maintained through the operations of the steps S1, S2 and S3, the control system controls the first frequency converter to increase the frequency of the spindle motor;

and S5, if the liquid level of the tank body cannot be maintained, the control system automatically stops the filter cloth type disc dehydration system after sending out an equipment fault alarm and switches to a manual state.

6. The intelligent control method of the filter cloth type disc dehydrator system of claim 5, wherein: the set value of the liquid level of the tank body is 1.34 m; the maximum limit of the pressure of the gypsum cyclone is 140 KPa.

7. The intelligent control method of the filter cloth type disc dehydrator system of claim 4, wherein the controlling of the vacuum degree of the steam-water separator comprises the following steps:

s1, when the vacuum degree of the steam-water separator is lower than a set value, the liquid level detection device detects a liquid level signal of the tank body and transmits the signal to the control system, the control system judges that the liquid level is lower than the set value, and the liquid level of the tank body is adjusted to a preset normal height firstly;

s2, if the liquid level is not lower than the set value, the control system controls the first frequency converter to reduce the frequency of the spindle motor;

and S3, when the frequency of the spindle motor of the disc dehydrator is reduced to the lowest limit, the vacuum of the steam-water separator is still low, the thickness detection device detects the thickness signal of the disc gypsum and transmits the signal to the control system, the control system judges that the gypsum is discharged completely if the time that the thickness of the disc gypsum is lower than a set value reaches 30min, the control system automatically judges that the gypsum is discharged completely, and the filter cloth type disc dehydration system is automatically stopped and switched to a manual state.

8. The intelligent control method of the filter cloth type disc dehydrator system of claim 7, wherein: the set value of the vacuum degree of the steam-water separator is-70 KPa; the lowest limit of the frequency of the spindle motor of the disc dehydrator is 30 Hz; the thickness of the disc gypsum is set to be 1 cm.

9. An intelligent control method for a filter cloth disc dewatering machine system according to claim 4, wherein the control of disc gypsum thickness comprises the steps of:

s1, the thickness detection device detects the thickness of the disc gypsum and transmits the thickness to the control system in real time, the control system judges that the thickness of the gypsum is lower than a set value of 1cm, and the control system controls the first frequency converter to reduce the frequency of the spindle motor;

s2, when the frequency of the disc dehydrator is reduced to the lowest limit of 30Hz and the thickness of gypsum is still lower than 1cm, the control system controls the first electromagnetic valve to increase the opening;

s3, when the opening of the first electromagnetic valve is increased to 1/2, the thickness of the disc gypsum is still lower than 1cm, and the density of the slurry in the absorption tower is less than or equal to 1080kg/m³And the control system judges that the gypsum particles in the absorption tower are discharged, automatically stops the filter cloth type disc dehydration system and switches to a manual state.

10. An intelligent control method for a filter cloth disc dewatering machine system according to claim 4, wherein the control of disc gypsum thickness comprises the steps of:

s1, when the thickness of the gypsum is higher than a set value of 1cm, controlling the first frequency converter to increase the frequency of the spindle motor by the control system;

s2, when the frequency of the spindle motor of the disc dehydrator is increased to the highest value of 50Hz, the thickness of the gypsum is still higher than 1cm, and the density of the absorption tower is more than or equal to 1080kg/m³The control system controls the first electromagnetic valve to reduce the opening degree;

s3, when the adjustment is invalid through the steps S1 and S2, the control system controls the second electromagnetic valve to increase the opening degree and increase the water supplement of the tank body; when the thickness of the disc gypsum reaches 1cm, the opening of a water-supplementing pneumatic electromagnetic valve is kept, and the operation of the existing parameters of the disc dehydrator is maintained;

and S4, when the opening of the second magnetic valve is maximum and the thickness of the disc gypsum cannot be reduced, the system automatically stops the filter cloth type disc dehydration system after giving out an equipment fault alarm and switches to a manual state.

Technical Field

The invention relates to the technical field of gypsum dewatering equipment in a thermal power plant, in particular to a filter cloth type disc dewatering machine system and an intelligent control method thereof.

Background

Along with the continuous operation of a desulfurization system, gypsum crystals in an absorption tower slurry pool are continuously generated to be enlarged, the density of gypsum slurry is increased, the gypsum slurry is conveyed to a gypsum cyclone through a variable-frequency gypsum discharge pump to be subjected to primary dehydration, then the separated bottom flow with water content of 50% enters a filter cloth type disc dehydrator to be subjected to secondary dehydration, a gypsum semi-finished product with water content of about 10% is produced, and then the gypsum semi-finished product is transported to an external market through an automobile. The dehydration system discharges gypsum crystal particles, and the purposes of reducing the density of gypsum slurry, reducing the abrasion of desulfurization equipment and reducing the station power consumption of the desulfurization system are achieved. The most important equipment in the dewatering system is the filter cloth type disc dewatering machine, when gypsum is discharged normally, due to untimely manual adjustment, the cleanliness of filter cloth, the concentration of gypsum slurry, the liquid level of a groove body of the disc dewatering machine and the like, the vacuum of a separator in the operation of the filter cloth type disc dewatering machine, the thickness of the gypsum on a disc and the moisture content in the gypsum are very unstable, particularly, the change of the vacuum of the separator, so that the dewatering efficiency of the disc dewatering machine and the load of a spindle motor of the disc dewatering machine are extremely unstable, the spindle of the disc dewatering machine is blocked seriously, the motor is damaged due to overheating, and the safe, stable and economic operation of the desulfurization system is greatly influenced.

Disclosure of Invention

The invention aims to provide a filter cloth type disc dehydrator system for realizing online fine adjustment of a filter cloth type disc dehydrator and an intelligent control method thereof.

The technical scheme for realizing the purpose is as follows:

a filter cloth type disc dehydrator system comprises a disc dehydrator, a steam-water separator, a gypsum cyclone and a discharge pump; the feed inlet of the gypsum cyclone is connected with the discharge pump, and the discharge outlet of the gypsum cyclone is connected with the slurry tank of the disc dehydrator; the tank body of the disc dehydrator is connected with a process water pipeline; the disc dehydrator is connected with the steam-water separator; the feed inlet of the cyclone is connected with the gypsum slurry discharge pump;

a spindle motor of the disc dehydrator is electrically connected with a first frequency converter; the discharge pump is electrically connected with a second frequency converter; a first electromagnetic valve is arranged on a connecting pipeline of the disc dehydrator and the steam-water separator; the process water pipe is provided with a second electromagnetic valve; the disc dehydrator is provided with a liquid level detection device and a thickness detection device

The first frequency converter, the second frequency converter, the first electromagnetic valve, the second electromagnetic valve, the liquid level detection device and the thickness detection device are respectively electrically connected with the control system.

Preferably, the liquid level detection device employs an ultrasonic liquid level sensor.

Preferably, the thickness detection device adopts a laser gypsum thickness meter.

An intelligent control method of a filter cloth type disc dehydrator system adopts the system, and the control method comprises the following steps: the control system controls the liquid level of the trough body, the vacuum degree of the steam-water separator and the thickness of the disc gypsum.

Further, the control of the liquid level of the tank body comprises the following steps:

s1, when the liquid level of the tank body is lower than a set value, the liquid level detection device detects a liquid level signal of the tank body and transmits the signal to the control system, and the control system controls the frequency converter of the discharge pump to increase the frequency;

s2, when the frequency is increased to the highest pressure limit of the gypsum cyclone and the liquid level still cannot meet the requirement, the control system controls the second electromagnetic valve to increase the opening degree and add water to the tank body;

s3, when the liquid level of the tank body cannot be met through the operations of the steps S1 and S2, the control system controls the first electromagnetic valve to reduce the opening degree;

s4, when the liquid level of the tank body still cannot be maintained through the operations of the steps S1, S2 and S3, the control system controls the first frequency converter to increase the frequency of the spindle motor;

and S5, if the liquid level of the tank body cannot be maintained, the control system automatically stops the filter cloth type disc dehydration system after sending out an equipment fault alarm and switches to a manual state.

Preferably, the set value of the liquid level of the tank body is 1.34 m; the maximum limit of the pressure of the gypsum cyclone is 140 KPa.

Further, the control of the vacuum degree of the steam-water separator comprises the following steps:

s1, when the vacuum degree of the steam-water separator is lower than a set value, the liquid level detection device detects a liquid level signal of the tank body and transmits the signal to the control system, the control system judges that the liquid level is lower than the set value, and the liquid level of the tank body is adjusted to a preset normal height firstly;

s2, if the liquid level is not lower than the set value, the control system controls the first frequency converter to reduce the frequency of the spindle motor;

and S3, when the frequency of the spindle motor of the disc dehydrator is reduced to the lowest limit, the vacuum of the steam-water separator is still low, the thickness detection device detects the thickness signal of the disc gypsum and transmits the signal to the control system, the control system judges that the gypsum is discharged completely if the time that the thickness of the disc gypsum is lower than a set value reaches 30min, the control system automatically judges that the gypsum is discharged completely, and the filter cloth type disc dehydration system is automatically stopped and switched to a manual state.

Preferably, the set value of the vacuum degree of the steam-water separator is-70 KPa; the lowest limit of the frequency of the spindle motor of the disc dehydrator is 30 Hz; the thickness of the disc gypsum is set to be 1 cm.

Further, the thickness control of the disc gypsum comprises the following steps:

s1, the thickness detection device detects the thickness of the disc gypsum and transmits the thickness to the control system in real time, the control system judges that the thickness of the gypsum is lower than a set value of 1cm, and the control system controls the first frequency converter to reduce the frequency of the spindle motor;

s2, when the frequency of the disc dehydrator is reduced to the lowest limit of 30Hz and the thickness of gypsum is still lower than 1cm, the control system controls the first electromagnetic valve to increase the opening;

s3, when the opening of the first electromagnetic valve is increased to 1/2, the thickness of the disc gypsum is still lower than 1cm, and the density of the slurry in the absorption tower is less than or equal to 1080kg/m³And the control system judges that the gypsum particles in the absorption tower are discharged, automatically stops the filter cloth type disc dehydration system and switches to a manual state.

Further, the thickness control of the disc gypsum comprises the following steps:

s1, when the thickness of the gypsum is higher than a set value of 1cm, controlling the first frequency converter to increase the frequency of the spindle motor by the control system;

s2, when the frequency of the spindle motor of the disc dehydrator is increased to the highest value of 50Hz, the thickness of the gypsum is still higher than 1cm, and the density of the absorption tower is more than or equal to 1080kg/m³The control system controls the first electromagnetic valve to reduce the opening degree;

s3, when the adjustment is invalid through the steps S1 and S2, the control system controls the second electromagnetic valve to increase the opening degree and increase the water supplement of the tank body; when the thickness of the disc gypsum reaches 1cm, the opening of a water-supplementing pneumatic electromagnetic valve is kept, and the operation of the existing parameters of the disc dehydrator is maintained;

and S4, when the opening of the second magnetic valve is maximum and the thickness of the disc gypsum cannot be reduced, the system automatically stops the filter cloth type disc dehydration system after giving out an equipment fault alarm and switches to a manual state.

The invention has the beneficial effects that:

the invention provides a filter cloth type disc dehydrator system and an intelligent control method thereof, which improve partial equipment of the filter cloth type disc dehydrator, and simultaneously add an intelligent control system of a filter cloth type disc dehydrator, solve the problems of equipment damage, unstable gypsum quality, low dehydration efficiency, serious equipment abrasion and the like caused by untimely manual adjustment, improve the real-time performance and refinement of adjustment, effectively reduce the system abrasion and corrosion, reduce the power plant rate of a desulfurization system, improve the quality of desulfurization byproduct gypsum, reduce the error rate of manual operation, improve the adjustment precision, increase the functions of fault judgment and the like, and realize the intelligent optimized operation of the dehydration system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

Fig. 1 is a filter cloth type disc dehydrator system according to an embodiment of the present invention.

In the figure, 1, a disc dehydrator; 2. a steam-water separator; 3. a gypsum cyclone; 4. a discharge pump; 5. a first frequency converter; 6. a second frequency converter; 7. a first solenoid valve; 8. a second solenoid valve; 9. a liquid level detection device; 10. thickness detection device.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below, obviously, the described embodiments are only a part of the embodiments of the present application, but not all embodiments, and the description is only for further explaining the features and advantages of the present invention, and not for limiting the claims of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1, a filter cloth type disc dehydrator system according to a preferred embodiment of the present invention includes a disc dehydrator 1, a steam-water separator 2, a gypsum cyclone 3, and a discharge pump 4; the feed inlet of the gypsum cyclone 3 is connected with the discharge pump 4, and the discharge outlet of the gypsum cyclone 3 is connected with the slurry tank of the disc dehydrator 1; the groove body of the disc dehydrator 1 is connected with a process water pipeline; the disc dehydrator 1 is connected with the steam-water separator 2; the feed inlet of the cyclone is connected with the gypsum slurry discharge pump 4;

a spindle motor of the disc dehydrator 1 is electrically connected with a first frequency converter 5; the discharge pump 4 is electrically connected with a second frequency converter 6; a first electromagnetic valve 7 is arranged on a connecting pipeline between the disc dehydrator 1 and the steam-water separator 2; a second electromagnetic valve 8 is arranged on the process water pipe; the disc dehydrator 1 is provided with a liquid level detection device 9 and a thickness detection device 10

The first frequency converter 5, the second frequency converter 6, the first electromagnetic valve 7, the second electromagnetic valve 8, the liquid level detection device 9 and the thickness detection device 10 are respectively electrically connected with the control system.

In some embodiments of the present application, the liquid level detection device 9 employs an ultrasonic liquid level sensor.

In some embodiments of the present application, the thickness detection device 10 employs a laser gypsum thickness gauge.

An intelligent control method of a filter cloth type disc dehydrator system comprises the following steps: the control system controls the liquid level of the trough body, the vacuum degree of the steam-water separator 2 and the thickness of the disc gypsum.

In some embodiments of the present application, the controlling of the tank body liquid level comprises the steps of:

s1, when the liquid level of the tank body is lower than the set value of 1.34m, the liquid level detection device 9 transmits a signal to the control system, and the control system controls the frequency converter of the discharge pump 4 to increase the frequency;

s2, when the frequency is increased to 140KPa at the highest pressure limit of the gypsum cyclone 3 and the liquid level still cannot meet the requirement, the control system controls the second electromagnetic valve 8 to increase the opening degree and add water to the tank body;

s3, when the liquid level of the tank body cannot be met through the operations of the steps S1 and S2, the control system controls the first electromagnetic valve 7 to reduce the opening degree, reduce the disc pulp absorption amount, maintain the liquid level of the tank body, and further improve the liquid level of the tank body under the condition that other parameters are not changed;

s4, when the liquid level of the tank body still cannot be maintained through the operations of the steps S1, S2 and S3, the control system controls the first frequency converter 5 to increase the frequency of the spindle motor so as to reduce the pulp suction amount in unit time and achieve the purpose of maintaining the liquid level of the tank body to a set value;

and S5, if the liquid level of the tank body cannot be maintained, the control system automatically stops the filter cloth type disc dehydration system after sending out an equipment fault alarm, and automatically switches to a manual state.

In some embodiments of the present application, the control of the vacuum of the steam-water separator 2 comprises the following steps:

s1, when the vacuum degree of the steam-water separator 2 is lower than a set value of-70 KPa, detecting a liquid level signal of the tank body through a liquid level detection device 9, judging through a control system, and if the liquid level is lower than the set value, adjusting the liquid level of the tank body to a preset normal height;

s2, if the liquid level is not low, the control system controls the first frequency converter 5 to reduce the frequency of the spindle motor and increase the liquid absorption amount in unit time, so that the thickness of gypsum on the disc is increased, the differential pressure on two sides of the disc gypsum is increased, and the purpose of improving the vacuum of the steam-water separator 2 is finally achieved;

s3, when the frequency of a spindle motor of the disc dehydrator 1 is reduced to the lowest limit of 30Hz, the vacuum of the steam-water separator 2 is still low, the thickness of the disc gypsum is detected through the thickness detection device 10, the thickness of the disc gypsum is judged through the control system, if the thickness of the disc gypsum is lower than a set value 1cm and reaches 30min, the system automatically judges that the gypsum is discharged, automatically stops the filter cloth type disc dehydrating system and switches to a manual state.

In some embodiments of the present application, the controlling of the disc gypsum thickness comprises the steps of:

s1, the thickness detection device 10 detects the thickness of the disc gypsum and transmits the thickness of the disc gypsum to the control system in real time, the control system judges that the thickness of the disc gypsum is lower than a set value of 1cm, and the control system controls the first frequency converter 5 to reduce the frequency of the spindle motor so as to increase the liquid absorption amount of the disc in unit time and increase the thickness of the disc gypsum;

s2, when the frequency of the disc dehydrator 1 is reduced to the lowest limit of 30Hz, and the thickness of the gypsum is still lower than 1cm, the control system controls the first electromagnetic valve 7 to increase the opening degree so as to increase the liquid absorption amount of the disc in unit time, and thus the thickness of the gypsum on the disc is increased;

s3, when the opening degree of the first electromagnetic valve 7 is increased to 1/2 and the thickness of the disc gypsum is still lower than 1cm, the density of the slurry in the absorption tower is less than or equal to 1080kg/m³And the control system judges that the gypsum particles in the absorption tower are discharged, automatically stops the filter cloth type disc dehydration system and switches to a manual state.

In some embodiments of the present application, the controlling of the disc gypsum thickness comprises the steps of:

s1, when the thickness of the gypsum is higher than a set value of 1cm, the control system controls the first frequency converter 5 to increase the frequency of the spindle motor so as to reduce the liquid absorption amount in unit time, and therefore, the thickness of the disc gypsum is reduced;

s2, when the frequency of the spindle motor of the disc dehydrator 1 is increased to the maximum value of 50Hz, the thickness of the gypsum is still higher than 1cm, and the density of the absorption tower is more than or equal to 1080kg/m³The control system controls the first electromagnetic valve 7 to reduce the opening, so that the liquid absorption amount of the disc in unit time is reduced, and the purpose of reducing the thickness of the disc gypsum is achieved;

s3, when the adjustment is invalid through the steps S1 and S2, the control system controls the second electromagnetic valve 8 to increase the opening degree, increase the water supplement of the trough body and reduce the density of the gypsum slurry of the trough body, so that the thickness of the disc gypsum is reduced; when the thickness of the disc gypsum reaches 1cm, the opening of a water-supplementing pneumatic electromagnetic valve is kept, and the operation of the existing parameters of the disc dehydrator 1 is maintained;

and S4, when the opening of the second magnetic valve is maximum and the thickness of the disc gypsum cannot be reduced, the system automatically stops the filter cloth type disc dehydration system after giving out an equipment fault alarm and switches to a manual state.

In some embodiments of the present application, the set value: the liquid level of the tank body is 1.34 m; the vacuum degree of the steam-water separator is-70 KPa; the thickness of the gypsum is 1.0 cm; system limit value: the pressure of the gypsum cyclone is not less than 120KPa and not more than 140 KPa; the frequency of the spindle motor is less than or equal to 30Hz and less than or equal to 50 Hz; 1080kg/m³The density of the slurry in the absorption tower is not more than 1180kg/m³。

The embodiment provides a high filter cloth type disc dehydrator system and an intelligent control method thereof, which can realize online fine adjustment of a filter cloth type disc dehydrator, ensure the safety of equipment and the quality of gypsum as a desulfurization byproduct, and simultaneously reduce the uneconomic performance caused by lag of personnel adjustment The vacuum of the separator, the thickness of the gypsum and other set values are used for adjusting, alarming and stopping the corresponding equipment, so that the normal operation of the dewatering system and the good gypsum quality are ensured.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.