阅读说明：本技术 一种污泥协同处置自动掺配系统及方法 (Automatic blending system and method for sludge co-treatment ) 是由 刘炜 向前 王海廷 于 2021-08-25 设计创作，主要内容包括：本发明揭示了一种污泥协同处置自动掺配系统及方法,系统由原煤与污泥储存组件、计量组件、燃料输送组件以及混合装置四部分组成；原煤与污泥储存组件包括多个原煤仓及多个污泥仓,多个污泥仓内所存储的污泥含水量各异；计量组件包括多个电动计量卸料装置；燃料输送组件包括燃料原材输送装置及燃料成品输送装置；原煤仓与污泥仓均借助输送管道连接至燃料原材输送装置,每条输送管道上均设置有一个电动计量卸料装置。本发明通过设备间的相互配合,既可将污泥独立焚烧过程中含水率不同的污泥进行准确掺配,也可对污泥系统处置过程中的原煤与污泥进行合理掺配,有效地提升了入炉燃料的热值均匀性,改善和杜绝了锅炉燃烧负荷恶化和变动大等问题。(The invention discloses an automatic blending system and method for sludge co-processing, wherein the system consists of four parts, namely a raw coal and sludge storage component, a metering component, a fuel conveying component and a mixing device; the raw coal and sludge storage assembly comprises a plurality of raw coal bins and a plurality of sludge bins, and the water content of the sludge stored in the sludge bins is different; the metering assembly comprises a plurality of electric metering discharge devices; the fuel conveying assembly comprises a fuel raw material conveying device and a fuel finished product conveying device; the raw coal bin and the sludge bin are connected to a fuel raw material conveying device by means of conveying pipelines, and each conveying pipeline is provided with an electric metering discharging device. The invention can accurately blend the sludge with different water contents in the independent sludge incineration process and reasonably blend the raw coal and the sludge in the sludge system disposal process through the mutual matching of the devices, thereby effectively improving the uniformity of the heat value of the fuel entering the furnace, improving and eliminating the problems of the deterioration and the large change of the combustion load of the boiler and the like.)

1. The utility model provides a mud is automatic to mix system of disposition in coordination which characterized in that: the device comprises four parts, namely a raw coal and sludge storage component, a metering component, a fuel conveying component and a mixing device; the raw coal and sludge storage assembly comprises a plurality of raw coal bins for storing raw coal and a plurality of sludge bins for storing sludge, and the water content of the sludge stored in the sludge bins is different; the metering assembly comprises a plurality of electric metering discharging devices for controlling discharging operation, and the number of the electric metering discharging devices is the same as the total number of the raw coal bin and the sludge bin; the fuel conveying assembly comprises a fuel raw material conveying device for conveying raw coal and sludge to the mixing device and a fuel finished product conveying device for conveying fuel finished products out of the mixing device; the raw coal bin and the sludge bin are connected to the fuel raw material conveying device through conveying pipelines, and each conveying pipeline is provided with one electric metering discharging device.

2. The automatic blending and dispensing system for sludge co-treatment according to claim 1, wherein: the raw coal and sludge storage assembly comprises two raw coal bins and three sludge bins, wherein the two raw coal bins are a first raw coal bin and a second raw coal bin respectively, and the three sludge bins are a first sludge bin, a second sludge bin and a third sludge bin respectively; along the direction of delivery of the raw material fuel conveying device, the arrangement of the bin bodies in the raw coal and sludge storage assembly sequentially comprises a first sludge bin, a first raw coal bin, a second sludge bin, a second raw coal bin and a third sludge bin.

3. The automatic blending and dispensing system for sludge co-treatment according to claim 2, wherein: the water content of the sludge stored in the first sludge bin is 60%, the water content of the sludge stored in the second sludge bin is 80%, and the water content of the sludge stored in the third sludge bin is 40%.

4. The automatic blending and dispensing system for sludge co-treatment according to claim 1, wherein: at least two conveying belts are arranged in the fuel raw material conveying device, and the conveying belts are arranged in parallel; under conveyor belt's running state, the raw coal in the raw coal storehouse falls into be located the upper strata the conveyor belt on and by its transport extremely mixing arrangement, mud in the mud storehouse falls into be located the lower floor the conveyor belt on and by its transport extremely mixing arrangement.

5. The automatic blending and dispensing system for sludge co-treatment according to claim 1, wherein: the metering assembly further comprises a plurality of electric gate valves, and the number of the electric gate valves is the same as that of the electric metering discharging devices; the front section of each conveying pipeline is provided with an electric gate valve and used for controlling the opening and closing of the pipeline, and the rear section of each conveying pipeline is provided with an electric metering discharging device.

6. The automatic blending and dispensing system for sludge co-treatment according to claim 1, wherein: the metering assembly, the fuel conveying assembly and the mixing device are electrically connected with the control terminal and are controlled and driven by the control terminal; and an interlocking protection mechanism is arranged in the control terminal, is respectively associated with the electric metering discharge device, the fuel conveying assembly and the mixing device, and is used for closing the electric metering discharge device when the fuel conveying assembly or the mixing device is in a stop state.

7. An automatic blending method for sludge cooperative treatment based on the automatic blending system for sludge cooperative treatment as claimed in any one of claims 1 to 6, comprising the following steps:

s1, determining the heat value required by the fuel finished product actually fed into the furnace, inputting the heat value of the fuel raw material in each bin body in the raw coal and sludge storage component in the control terminal, setting and matching the rotating speed of the electric metering discharge device corresponding to each bin body, and immediately displaying the comprehensive heat value of the final fuel finished product by the control terminal;

s2, starting the fuel raw material conveying device and the mixing device, and starting the fuel finished product conveying device after the mixing device normally operates;

s3, the control terminal controls the electric flashboard valve on the conveying pipeline connected with the raw coal bin to open and then starts the electric metering discharge device on the pipeline, and the control terminal controls the electric flashboard valve on the conveying pipeline connected with the sludge bin to open and then starts the electric metering discharge device on the pipeline;

and S4, the sludge and the raw coal in the raw coal and sludge storage assembly fall into a fuel raw material conveying device along a conveying pipeline under the control of the electric metering discharge device, then the raw coal and the raw coal are conveyed into the mixing device, and the raw coal are stirred and mixed by the mixing device to form a fuel finished product, and finally the fuel finished product is conveyed out of the system by the fuel finished product conveying device.

Technical Field

The invention relates to sludge treatment equipment, in particular to an automatic blending and distributing system for sludge cooperative treatment and a blending and distributing method using the system, and belongs to the field of industrial and municipal sludge treatment.

Background

With the acceleration of the urbanization process in China, the treatment modes of sewage and sludge in cities are changing continuously. At present, the most common treatment mode of sludge in China belongs to sludge incineration, and sludge is required to be dehydrated before incineration in order to ensure incineration efficiency.

At present, in the sludge dewatering process of domestic municipal sewage treatment plants, equipment mainly comprises a belt type dewatering machine, a centrifugal dewatering machine and a plate-and-frame filter press, the water content of sludge treated by the belt type dewatering machine and the centrifugal dewatering machine is about 75-85%, and the water content of sludge dewatered by the plate-and-frame filter press is about 55-65%.

The boiler used in sludge cooperative disposal incineration is generally a fluidized bed boiler or a bubbling bed boiler, the boiler is greatly influenced by the change of the heat value of fuel, the uneven mixing of the fuel can directly cause the uneven heat value of the fuel entering the boiler and cause the unstable combustion working condition of the boiler, and further the stable operation of the whole system is influenced, and serious accidents such as fire extinguishment of the boiler can be caused when the boiler is serious. Especially, under the condition that a single furnace operates to supply heat and steam to the outside, unstable external heat supply can be caused due to unstable load, and poor-quality products and customer complaints are easy to occur.

In order to avoid the above phenomena, increasing the calorific value of the fuel and ensuring the uniform mixing of the fuel become the common concern in the industry. The sludge dehydrated by the belt type dehydrator, the centrifugal dehydrator and the plate-and-frame filter press has relatively high water content and relatively low heat value, and is not beneficial to subsequent cooperative treatment, so that in recent years, on the basis of primary dehydration of the sludge, low-temperature drying and disc drying processes are adopted for the sludge with the water content of 55-85%, the water content of the sludge is further reduced to about 30-45%, and then the sludge and the coal are mixed and distributed to a power station boiler according to a certain proportion for unified centralized cooperative treatment. Although the operation can reduce the water content of the sludge, the actual blending process still simply mixes the sludge and the fire coal, so that not only the fly ash and the flying dust in the blending process are large, but also the phenomenon of uneven mixing cannot be obviously improved, and the combustion condition of the boiler is influenced.

In summary, how to provide a systematic sludge cooperative treatment automatic blending system and a blending method using the system under the existing technical conditions to achieve uniform mixing of coal and sludge and effectively solve the uniformity of the calorific value of the fuel entering the furnace becomes a problem to be solved by technical staff in the industry at present.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides an automatic blending system for sludge co-treatment and a blending method using the same, which are described below.

An automatic blending system for sludge co-processing comprises a raw coal and sludge storage assembly, a metering assembly, a fuel conveying assembly and a mixing device; the raw coal and sludge storage assembly comprises a plurality of raw coal bins for storing raw coal and a plurality of sludge bins for storing sludge, and the water content of the sludge stored in the sludge bins is different; the metering assembly comprises a plurality of electric metering discharging devices for controlling discharging operation, and the number of the electric metering discharging devices is the same as the total number of the raw coal bin and the sludge bin; the fuel conveying assembly comprises a fuel raw material conveying device for conveying raw coal and sludge to the mixing device and a fuel finished product conveying device for conveying fuel finished products out of the mixing device; the raw coal bin and the sludge bin are connected to the fuel raw material conveying device through conveying pipelines, and each conveying pipeline is provided with one electric metering discharging device.

Preferably, the raw coal and sludge storage assembly comprises two raw coal bins and three sludge bins, the two raw coal bins are a first raw coal bin and a second raw coal bin respectively, and the three sludge bins are a first sludge bin, a second sludge bin and a third sludge bin respectively; along the direction of delivery of the raw material fuel conveying device, the arrangement of the bin bodies in the raw coal and sludge storage assembly sequentially comprises a first sludge bin, a first raw coal bin, a second sludge bin, a second raw coal bin and a third sludge bin.

Preferably, the water content of the sludge stored in the first sludge bin is 60%, the water content of the sludge stored in the second sludge bin is 80%, and the water content of the sludge stored in the third sludge bin is 40%.

Preferably, at least two conveying belts are arranged in the fuel raw material conveying device, and the conveying belts are arranged in parallel; under conveyor belt's running state, the raw coal in the raw coal storehouse falls into be located the upper strata the conveyor belt on and by its transport extremely mixing arrangement, mud in the mud storehouse falls into be located the lower floor the conveyor belt on and by its transport extremely mixing arrangement.

Preferably, the metering assembly further comprises a plurality of electric gate valves, and the number of the electric gate valves is the same as that of the electric metering discharge devices; the front section of each conveying pipeline is provided with an electric gate valve and used for controlling the opening and closing of the pipeline, and the rear section of each conveying pipeline is provided with an electric metering discharging device.

Preferably, the system also comprises a control terminal for realizing the automatic operation of the system, and the metering assembly, the fuel delivery assembly and the mixing device are electrically connected with the control terminal and are controlled and driven by the control terminal; and an interlocking protection mechanism is arranged in the control terminal, is respectively associated with the electric metering discharge device, the fuel conveying assembly and the mixing device, and is used for closing the electric metering discharge device when the fuel conveying assembly or the mixing device is in a stop state.

The automatic blending method for the sludge co-processing is based on the automatic blending system for the sludge co-processing and comprises the following steps:

s1, determining the heat value required by the fuel finished product actually fed into the furnace, inputting the heat value of the fuel raw material in each bin body in the raw coal and sludge storage component in the control terminal, setting and matching the rotating speed of the electric metering discharge device corresponding to each bin body, and immediately displaying the comprehensive heat value of the final fuel finished product by the control terminal;

s2, starting the fuel raw material conveying device and the mixing device, and starting the fuel finished product conveying device after the mixing device normally operates;

s3, the control terminal controls the electric flashboard valve on the conveying pipeline connected with the raw coal bin to open and then starts the electric metering discharge device on the pipeline, and the control terminal controls the electric flashboard valve on the conveying pipeline connected with the sludge bin to open and then starts the electric metering discharge device on the pipeline;

and S4, the sludge and the raw coal in the raw coal and sludge storage assembly fall into a fuel raw material conveying device along a conveying pipeline under the control of the electric metering discharge device, then the raw coal and the raw coal are conveyed into the mixing device, and the raw coal are stirred and mixed by the mixing device to form a fuel finished product, and finally the fuel finished product is conveyed out of the system by the fuel finished product conveying device.

Compared with the prior art, the invention has the advantages that:

the automatic blending system for sludge cooperative treatment provided by the invention can accurately blend sludge with different water contents in the independent sludge incineration process and reasonably blend raw coal and sludge in the sludge system treatment process through the mutual matching of the equipment, thereby realizing the coupling of coal and sludge, effectively improving the uniformity of the calorific value of fuel entering a furnace, and improving and eliminating the problems of deterioration, large change and the like of the combustion load of a boiler.

Meanwhile, the system of the invention has relatively simple and reliable structure, enterprises can obtain the technical scheme of the invention by combining and transforming the existing equipment, the hardware manufacturing cost is relatively low, the use effect is obvious, the system is very suitable for large-scale popularization of production enterprises, and the application prospect is wide.

Correspondingly, the blending method is based on the automatic blending system for sludge cooperative treatment, the whole process is carried out in an automatic local mode, manual intervention is not needed in the blending process, human resources are saved, the operation safety is guaranteed, the ratio of sludge with different water contents and the ratio of sludge to coal are accurately controlled, and the accuracy of blending results is remarkably improved.

The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings for the purpose of facilitating understanding and understanding of the technical solutions of the present invention.

Drawings

FIG. 1 is a system architecture diagram of the present invention.

Detailed Description

The invention discloses an automatic blending system for sludge cooperative treatment and a blending method using the same.

As shown in figure 1, the automatic blending system for sludge co-processing comprises a raw coal and sludge storage assembly, a metering assembly, a fuel conveying assembly and a mixing device.

The raw coal and sludge storage assembly comprises a plurality of raw coal bins for storing raw coal and a plurality of sludge bins for storing sludge, and the water content of the sludge stored in the sludge bins is different. In this embodiment, the raw coal and sludge storage assembly includes two raw coal bunkers and three sludge bunker, two the raw coal bunker is first raw coal bunker and second raw coal bunker respectively, and is three the sludge bunker is first sludge bunker, second sludge bunker and third sludge bunker respectively. The water content of the sludge stored in the first sludge bin is 60%, the water content of the sludge stored in the second sludge bin is 80%, and the water content of the sludge stored in the third sludge bin is 40%.

The fuel conveying assembly comprises a fuel raw material conveying device for conveying raw coal and sludge to the mixing device and a fuel finished product conveying device for conveying fuel finished products out of the mixing device. At least two conveying belts are arranged in the fuel raw material conveying device, and the conveying belts are arranged in parallel; under conveyor belt's running state, the raw coal in the raw coal storehouse falls into be located the upper strata the conveyor belt on and by its transport extremely mixing arrangement, mud in the mud storehouse falls into be located the lower floor the conveyor belt on and by its transport extremely mixing arrangement. The arrangement can ensure that the raw coal and the sludge can be fully stirred after entering the mixing device, the mixed combustion requirement of the boiler is met, and the purpose of cooperative treatment is realized.

It needs to be supplemented that the arrangement of the bin bodies in the raw coal and sludge storage assembly sequentially comprises a first sludge bin, a first raw coal bin, a second sludge bin, a second raw coal bin and a third sludge bin along the conveying direction of the fuel raw material conveying device.

The metering assembly comprises a plurality of electric metering discharging devices for controlling discharging operation, and the number of the electric metering discharging devices is the same as the total number of the raw coal bin and the sludge bin; the raw coal bin and the sludge bin are connected to the fuel raw material conveying device through conveying pipelines, and each conveying pipeline is provided with one electric metering discharging device.

The metering assembly further comprises a plurality of electric gate valves, and the number of the electric gate valves is the same as that of the electric metering discharging devices; the front section of each conveying pipeline is provided with an electric gate valve and used for controlling the opening and closing of the pipeline, and the rear section of each conveying pipeline is provided with an electric metering discharging device.

Besides the devices, the automatic blending system for sludge cooperative treatment further comprises a control terminal for realizing the automatic operation of the system, and the metering assembly, the fuel conveying assembly and the mixing device are electrically connected with the control terminal and are controlled and driven by the control terminal; the control terminal is internally provided with an interlocking protection mechanism which is respectively associated with the electric metering discharge device, the fuel conveying assembly and the mixing device, and the interlocking protection mechanism is used for closing the electric metering discharge device when the fuel conveying assembly or the mixing device is in a stop state, and preventing the electric metering discharge device from not stopping in time to cause coal blockage after a belt of the fuel conveying assembly or the mixing device suddenly trips.

In conclusion, the automatic blending system for sludge cooperative treatment provided by the invention can accurately blend sludge with different water contents in the independent sludge incineration process and reasonably blend raw coal and sludge in the treatment process of the sludge system through the mutual cooperation of the equipment, so that the coupling of coal and sludge is realized, the uniformity of the heat value of fuel entering a furnace is effectively improved, and the problems of the deterioration and the large change of the combustion load of the boiler and the like are improved and eradicated.

Meanwhile, the system of the invention has relatively simple and reliable structure, enterprises can obtain the technical scheme of the invention by combining and transforming the existing equipment, the hardware manufacturing cost is relatively low, the use effect is obvious, the system is very suitable for large-scale popularization of production enterprises, and the application prospect is wide.

The automatic blending method for the sludge co-processing is based on the automatic blending system for the sludge co-processing and comprises the following steps:

s1, determining the heat value required by the fuel finished product actually fed into the furnace, inputting the heat values of the fuel raw materials in the raw coal and each bin body in the sludge storage component in a control terminal, setting and matching the rotating speed of the electric metering discharge device corresponding to each bin, immediately displaying the comprehensive heat value of the final fuel finished product by the control terminal, and sequentially executing the subsequent steps by the system after the setting is completed;

s2, starting the fuel raw material conveying device and the mixing device, and starting the fuel finished product conveying device after the mixing device normally operates;

s3, the control terminal controls the electric flashboard valve on the conveying pipeline connected with the raw coal bin to open and then starts the electric metering discharge device on the pipeline, the control terminal controls the electric flashboard valve on the conveying pipeline connected with the sludge bin to open and then starts the electric metering discharge device on the pipeline, and the stopping step of the automatic blending system for sludge cooperative treatment is opposite to the starting step;

and S4, the sludge and the raw coal in the raw coal and sludge storage assembly fall into a fuel raw material conveying device along a conveying pipeline under the control of the electric metering discharge device, then the raw coal and the raw coal are conveyed into the mixing device, and the raw coal are stirred and mixed by the mixing device to form a fuel finished product, and finally the fuel finished product is conveyed out of the system by the fuel finished product conveying device.

It needs to be supplemented that before the automatic blending and dispensing system for sludge cooperative treatment, the quantity and the reasonable proportion of the fire coal and the sludge are calculated according to a heat value requirement list provided by a production department, a fire coal laboratory test list provided by a laboratory and a formula, and the quantity of the weighing devices is determined. In the production process, the mixing device, the fuel conveying assembly and the metering assembly are sequentially started, and the optimal ratio of the heat value of the fire coal and the sludge required by the combustion of the boiler can be obtained under the condition that the parameters of the electric metering discharging device are adjusted in advance.

In specific operation, the following table may be listed.

Wherein, A1, A2, B1, B2 and B3 are provided by laboratories to provide data, and X1, X2, Y1, Y2 and Y3 can be obtained by adjusting the rotating speed of the electric metering unloading device. The above data can be input on the control panel of the control terminal, and normally, the data of each batch of the coal for admission A1, A2 and B1, B2 and B3 are basically unchanged, and can be modified in the input panel if the data are changed. The quantities of X1, X2, Y1, Y2 and Y3 can be obtained by adjusting the rotating speed of a metering device on a control panel, and the heat value of the mixed fuel can be calculated by the background of the control terminal. And according to a laboratory sheet provided by a laboratory, when the calorific value of coal entering a factory changes every time, the numerical value in the control terminal needs to be reset.

In the actual production process, the production department can input the rotating speed of the electric metering discharge device corresponding to each storage bin on a control panel according to the storage condition of various fuels and the combustion requirement of a boiler, and then the accurate proportion of the sludge and the fire coal can be obtained.

When actual system set up, sludge bunker and former coal bunker can select for use according to actual demand. If the subsequent incineration treatment system is an independent incineration system, the raw coal bin can be cancelled according to the actual situation, and X1 and X2 can be zero at the moment; if the raw coal bin is not cancelled, the raw coal bin can be used as a sludge storage bin, and the calculation method is not changed.

Correspondingly, the blending method is based on the automatic blending system for sludge cooperative treatment, the whole process is carried out in an automatic local mode, manual intervention is not needed in the blending process, human resources are saved, the operation safety is guaranteed, the ratio of sludge with different water contents and the ratio of sludge to coal are accurately controlled, and the accuracy of blending results is remarkably improved.

The invention also provides reference for other related problems in the same field, can be expanded and extended based on the reference, is applied to related schemes of other sludge cooperative treatment equipment and methods in the field, and has very wide application prospect.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Finally, it should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should integrate the description, and the technical solutions in the embodiments can be appropriately combined to form other embodiments understood by those skilled in the art.