JP2011065598A - Device and program for managing quality of organic sludge-derived solid fuel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for managing quality of organic sludge-derived solid fuel, which minimizes an increase in cost for producing organic sludge-derived solid fuel and keeps overall quality of the organic sludge-derived solid fuel to be produced in a plurality of sludge discharge plants, at a predetermined level. <P>SOLUTION: A central computer 2 estimates an average heating value per unit of the whole organic sludge-derived solid fuel to be collected from all the sludge discharge plants 100 next time, on the basis of the amount of generated organic sludge-derived solid fuel and the heating value per unit received from each system 1 in the sludge discharge plants. If the estimated average heating value per unit does not satisfy a value designated by a fuel trader, the central computer 2 transmits a processing condition for reducing the heating value per unit of the produced organic sludge-derived solid fuel, for the system 1 in the sludge discharge plant whose average heating value per unit is far deviated from the value designated by the fuel trader. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a quality control device for performing quality control of solidified fuel when organic sludge is distributed as solidified fuel, and a quality control program for causing a computer to function as the quality control device.

Organic sludge discharged from sludge discharge establishments such as food factories, chemical factories, paper mills, and sewage treatment plants should be used as solid fuel by dehydrating with a dehydrator and then drying with a dryer. Can do. For example, in a boiler that originally uses coal as fuel, such solid fuel (hereinafter referred to as “organic sludge solidified fuel”) can be substituted for coal. If such a recycling model is realized, environmental destruction due to disposal of sludge will be prevented, and fossil fuels will be saved, and CO _{2 in the} entire recycling system will be saved.
It will also reduce the discharge power.

  However, there are many cases where the operator of the sludge discharge establishment and the operator of the boiler installation establishment are different from each other. In addition, if a sludge discharge establishment is installed with a dehydrator and a dryer and the operator of the sludge discharge establishment is allowed to produce organic sludge solidified fuel, one boiler installation establishment is originally required. Compared to the amount of fuel, the amount of solidified organic sludge generated at one sludge discharge establishment is small, so the combined organic sludge generated at multiple sludge discharge establishments It is necessary to deliver to the boiler installation site. Therefore, in order to put the above-described recycling model into practical use, a distributor who distributes the organic sludge solidified fuel between the sludge discharge establishment and the boiler installation establishment is required (see Patent Document 1).

Japanese Patent Laid-Open No. 2008-146306

  However, when organic sludge solidified fuel generated at a plurality of sludge discharge establishments is delivered to a single boiler installation establishment, the following problems arise. In other words, the solid content (ie, water content) of the organic sludge discharged at each sludge discharge establishment varies widely depending on the business contents at each sludge discharge establishment, so the organic sludge generated The quality of the activated sludge solidified fuel (that is, the calorific value per unit amount) cannot be uniform. Therefore, when organic sludge solidified fuel generated at multiple sludge discharge establishments is collected, the quality of the collected organic sludge solidified fuel as a whole (total calorific value) is the quality required by the boiler installation establishment. There may be cases where (total calorific value) is not satisfied.

  In such a case, in order to improve the quality of organic sludge solidified fuel with poor quality (less calorific value per unit amount), increase the dehydration rate in the dehydrator, add auxiliary agents such as wood chips, This can be dealt with by increasing the drying rate in the dryer.

However, there is a limit in improving the dehydration rate in the dehydrator. In addition, there is a problem that the addition of an auxiliary agent costs the purchase of the auxiliary agent who does not discharge the auxiliary agent. In addition, if the drying rate in the dryer is increased, the amount of fossil fuel used in the dryer increases, increasing the amount of CO ₂ emission and increasing the cost. Therefore, it is not realistic to equalize the quality of all organic sludge solidified fuel.

  Organic sludge solidified fuel can be used in place of conventional coal and wood in addition to boilers, so the establishment that collects organic sludge solidified fuel will be referred to as the `` fuel collection establishment '' below. That's it.

  On the other hand, as long as the prescribed minimum level is satisfied, even if there is a variation in the quality of individual organic sludge solidified fuel, various types of organic sludge solidified fuel can be mixed and put into the boiler. It is possible to stabilize the output of the boiler.

  Therefore, the problem of the present invention is that the organic sludge solidified fuel is interposed between the sludge discharge establishment equipped with the production facility for organic sludge solidified fuel and the fuel take-off establishment to support the distribution of the organic sludge solidified fuel. Organic sludge to keep the overall quality of organic sludge solidified fuel produced at multiple sludge discharge establishments at a specified value while minimizing the increase in the production cost of organic sludge solidified fuel It is an object to provide a quality control apparatus for solidified fuel and a quality control program for organic sludge solidified fuel for causing a computer to function as the quality control apparatus.

  The organic sludge solidified fuel quality control device according to the present invention and the computer that executes the organic sludge solidified fuel quality control program according to the present invention are the organic sludge generated by the fueling facility at each sludge discharge establishment. An input device that inputs the amount of solidified fuel and the amount of heat generated per unit, and the amount of organic sludge solidified fuel and the amount of heat generated per unit that have been input since the last recovery, for each sludge discharge facility To be stored in each sludge discharge establishment at the next recovery based on the amount of organic sludge solidified fuel and the amount of heat generated per unit for each sludge discharge establishment stored in the storage device. Calculate the total organic sludge solid fuel and the average calorific value per unit that will be stored, and the total organic sludge solid fuel that will be stored at all sludge discharge establishments. Calculating means for calculating a predicted average calorific value per unit, determination means for judging whether or not the predicted average calorific value per unit of the whole organic sludge solidified fuel satisfies a predetermined condition, and the determining means The sludge discharge establishment where the average calorific value per unit deviates from the predetermined condition when it is determined that the predicted average calorific value per unit of the whole organic sludge solidified fuel does not satisfy the predetermined condition For the sludge discharge establishment determined as the processing condition change target by the determination means, the processing condition, the calorific value per unit of the organic sludge solidified fuel The processing condition changing means for changing the direction to be lowered, the processing condition changed by the processing condition changing means, and the sludge discharge establishment determined to be the processing condition change target are notified. And means, characterized by comprising.

  According to the present invention configured as described above, the organic sludge solidified fuel produced as a whole at a plurality of sludge discharge establishments can be minimized while minimizing the increase in the production cost of the organic sludge solidified fuel. Quality can be maintained at a predetermined value.

Conceptual diagram of recycling system for solidified organic sludge fuel The block diagram which shows schematic structure of the network system which is embodiment of the quality control system of organic sludge solidification fuel Table showing the data structure of the processing condition table stored in the hard disk of the sludge discharge site system A table showing the data structure of the auxiliary database stored on the hard disk of the central computer A table showing the data structure of the drying database stored on the hard disk of the central computer A table showing the data structure of the drying database stored on the hard disk of the central computer A table showing the data structure of the drying database stored on the hard disk of the central computer Flow chart showing the processing executed in the sludge discharge facility side system Figure showing the sludge property input screen A flowchart showing processing executed in the central computer The flowchart which shows the priority determination process subroutine performed in S105 of FIG. FIG. 11 is a flowchart showing a predicted heat generation amount recalculation subroutine executed in S107 of FIG.

Hereinafter, embodiments of the present plan will be described based on the drawings.
<Organic sludge recycling system>
FIG. 1 is a conceptual diagram of a recycling system for distributing organic sludge realized by the present invention in the form of organic sludge solidified fuel.

  The distributor operating the central computer 2 concludes a continuous supply contract for solidified organic sludge fuel with a provider operating the fuel take-off establishment 120 having the boiler 121 corresponding to the solid fuel. The company is obligated to regularly deliver a certain amount of organic sludge solidified fuel that satisfies the average quality agreed by the contract (for example, calorific value per unit = 3000 kcl / kg).

  On the other hand, a sludge discharge establishment 100 having a sludge generation source 101 such as a food factory, a chemical factory, and a sewage treatment plant that has concluded a manufacturing and sales contract for organic sludge solidified fuel with a distributor is provided with a dehydrator 102 and a dryer. 103 is installed. The dehydrator 102 and the dryer 103 are purchased and installed by the operator of the sludge discharge establishment 100 or borrowed from a distributor to be described later.

  The sludge generated from the sludge generation source 101 has a water content of approximately 97.5 to 99.5%, although there are some variations depending on the type of the sludge generation source 101. In addition, although the ratio of the organic to the solid content in the sludge varies depending on the type of the sludge generation source 101, the sludge quality (heat generation amount) becomes higher as the moisture content is lower in any sludge. . Here, the calorific value per unit of sludge can be calculated based on the calorific value per unit of sludge having a moisture content of 0%. Therefore, by preparing the relationship between the moisture content and the calorific value per unit for the sludge at each sludge discharge establishment, the calorific value per unit of sludge can be evaluated by the moisture content.

  The dehydrator 102 dehydrates the sludge generated from the sludge generation source 101 to lower its moisture content to 45 to 85%. The dryer 103 heats the sludge dehydrated by the dehydrator 102 to lower its moisture content to 30% or less. Organic sludge solidified fuel C is prepared by adjusting the sludge dried by the dryer 103 to an appropriate size, and is stored in a storage (not shown). The water content (and hence the quality) of the organic sludge fixing fuel C varies depending on factors such as the performance of the dehydrator 102 and the dryer 103. The dehydrator 102 and the dryer 103 are collectively referred to as “fuel conversion facility”, and the treatment of sludge by the dehydrator 102 and the dryer 103 is referred to as “fuel conversion process”.

  Sludge discharge office side system 1 installed in each sludge discharge office 100, distributor is connected to the central computer 2 to operate, and notifies the measured data relating to the fuel processing on a central computer 2, The processing conditions from the central computer 2 are received.

  This treatment condition is that the average quality of the organic sludge solidified fuel C collected from each sludge discharge establishment 100 is equal to the average quality agreed in the continuous supply contract with the contractor operating the fuel collection establishment 120. In order to satisfy the conditions, the conditions are determined by the central computer 2, and specifically, the additive addition rate, the target moisture content, and the dryer operating conditions. Dryer operating conditions of the process conditions received in this way from the central computer 2 (drier air volume condition and dryer temperature) is more to the system configuration in the sludge discharge sites 100, dried directly through LAN (Local Area Network) It is set in the machine 103 or manually set in the dryer 103 by the person in charge. As a result, the dryer 103 blows hot air at the set temperature on the sludge with the set air volume. Further, the worker adds an auxiliary agent to the sludge charged into the dehydrator according to the auxiliary agent addition rate, and adjusts the operation time of the dryer 103 so that the moisture content of the sludge after drying becomes the target moisture content.

  Then, the collection vehicle 111 operated by the distributor collects the organic sludge solidified fuel C periodically (for example, once a week) and collects the organic sludge solidified fuel C, and collects the collected sludge. Delivered to location 120 (injected into hopper 122).

Based on the agreement in the continuous supply contract, the distributor collects the organic sludge solidified fuel C from the operator of the fuel collection facility 120. Then, the remaining amount obtained by subtracting its own expenses and profits is distributed to the operators of the individual sludge discharge establishments 100 according to the recovered amount (or the heat generation amount) of the organic sludge solidified fuel C.
<Network system>
Next, the configuration of the network system constructed to realize the recycling system as described above will be described with reference to FIG.

  As shown in FIG. 2, this network system is configured by connecting a plurality of sludge discharge establishment-side systems 1 installed at each sludge discharge establishment 100 and the central computer 2 through a network NW. It is configured.

  Each sludge discharge establishment-side system 1 is a client computer having a network connection function, and includes a CPU 10, a RAM 11, a keyboard 12, a display 13, a communication adapter 14, and a hard disk 15 connected to each other by a bus B. .

  The CPU 10 is a processing device that reads a program from the hard disk 15 and executes processing according to the program.

  The RAM 11 is a main storage device that expands a work area when the CPU 10 performs the above processing.

  The keyboard 12 is a keyboard for inputting various commands or data to the CPU 10 and includes a pointing device.

  The display 13 is a display device for displaying a processing result by the CPU 10.

  The communication adapter 14 is an interface that manages data communication according to the protocol of the network NW.

  The hard disk 15 is a fixed storage medium that stores various programs and various data. The various programs stored in the hard disk 15 include a program 16 for executing the processing of FIG. The various data stored in the hard disk 15 includes a processing condition table 17 for recording the processing conditions. FIG. 3 is a table showing a specific data structure of the processing condition table 17. The process condition table 17, as shown in FIG. 3, aid additive rate notified from the central computer 2, the target moisture content, the dryer air flow conditions, other drier temperature conditions, total operation time of the dryer 103 The dryer operating time indicating is registered.

  On the other hand, the central computer 2 is a computer that functions as a network server, and includes a CPU 20, a RAM 21, a keyboard 22, a display 23, a communication adapter 24, and a hard disk 25 that are connected to each other via a bus. Since the functions of the hardware 20 to 25 are the same as those of the sludge discharge company side system 1 described above, the description thereof is omitted. However, in the hard disk 25, programs 26, aids database 28 shown in FIG. 4 which executes the processing shown in Web server program and FIGS. 10 to 12, drying the database 27 is stored as shown in FIGS. 5-7. The keyboard 22 and the communication adapter 24 are input devices, and the hard disk 25 is a storage device.

  The auxiliary database 28 corresponds to the moisture content of the sludge after dehydration obtained by experiments for each combination of the specific value of the moisture content of the sludge and the specific value of the additive added to the dehydrator 102. it is attached tables. Since the relationship between the water content and the additive addition rate depends on the type of the dehydrator 102, the auxiliary database 28 needs to be prepared for each type of the dehydrator 102. FIG. 4A is a table showing a specific example of the auxiliary agent database 28 in a matrix format, and FIG. 4B is a graph showing the specific example in a graph format.

The drying database 27 is prepared for each dryer 103 installed in each sludge discharge establishment 100 and for each moisture content of the target organic sludge solidified fuel C, and is set in the dryer 103. Temperature conditions necessary for obtaining the organic sludge solidified fuel C having the target moisture content in the corresponding dryer 103 for each combination of the specific values of the air flow conditions and the specific values of the moisture content of the introduced sludge Is a table in which 5 shows the drying database 27 when the organic sludge solidified fuel C having a water content of 30% is targeted by the dryer 103 of the factory A, and FIG. 6 shows the water content of 35% by the dryer 103 of the factory A. The drying database 27 when the organic sludge solidified fuel C is targeted, and the drying database 27 when the organic sludge solidified fuel C having a moisture content of 25% is targeted by the dryer 103 of the factory A. Moreover, each figure (a) is the table | surface which showed the specific example of each drying database 27 in the matrix format, and each figure (b) is the graph which showed the specific example in the graph format.
<Program>
[Sludge discharge site]
FIG. 8 is a process for transmitting actual measurement data and updating the processing condition table 17 that are executed by a person in charge at a predetermined time every day, among processes executed by the CPU 10 of the sludge discharge establishment-side system 1 according to the program 16. .

  The process starts when the person in charge inputs a predetermined command using the input device 12. Then, in the first S001 after the start, the CPU 10 displays a sludge property input screen shown in FIG. As shown in FIG. 9, this sludge property input screen includes a sludge amount input field 31, a moisture content input field 32, a dehydrator operating time input field 33, a dehydrated moisture content input field 34, a dehydrated sludge amount input field 35, A post-drying moisture content input column 36, a dry sludge amount input column 37, a dryer operating gas amount input column 38, a send button 39 and an end button 40 are included.

  Among these, in the sludge amount input column 31, the generation amount of the sludge generated from the sludge generation source 101 measured by the person in charge on the input date is input. In the moisture content input field 32, the moisture content of the sludge generated from the sludge generation source 101 measured by the person in charge is entered. In the dehydrator operation time input field 33, the operation time on the input date of the dehydrator 102 actually measured by the person in charge is entered. Further, in the moisture content input column 34 after dehydration, the moisture content of sludge after dehydration by the dehydrator 102 actually measured by the person in charge is input. In the dewatered sludge amount input field 35, the amount of sludge after dehydration on the input date by the dehydrator 102 actually measured by the person in charge is input. Further, in the moisture content input column 36 after drying, the moisture content of the sludge after drying by the dryer 103 measured by the person in charge is input. In the dry sludge amount input field 37, the amount of sludge after drying on the input date by the dryer 103 measured by the person in charge is input. Further, the gas usage amount of the dryer 103 on the input date actually measured by the person in charge is entered in the dryer usage gas amount input field 38.

  In the next S002, the CPU 10 waits for the transmission button 39 or the end button 40 to be input. When any of the buttons 39 and 40 is input, the CPU 10 checks whether the input button is the transmission button 39 or the end button 40. When the transmission button 39 is input, the CPU 10 transmits the data input to the fields 31 to 37 of the sludge property input screen to the central computer 2 in S004.

  In the next S003, the CPU 10 waits for a response (S110) of the processing condition from the central computer 2. When there is a response to the processing condition, the CPU 10 updates the processing condition table 17 with the received processing condition in S006. Further, the actual operation time of the dryer is added to the operation time of the dryer on the processing condition table 17. When S006 is completed, the CPU 10 returns the process to S001.

On the other hand, if it is determined in S003 that the end button 40 has been input, the CPU 10 ends the processing by the program.
[Central computer side]
FIG. 10 is a process for determining processing conditions for each sludge discharge establishment that is automatically executed at a predetermined time every day among the processes executed by the CPU 20 of the central computer 2 in accordance with the program 26.

  In the first S100 after the start of the process, the CPU 20 waits for reception of data transmitted from each sludge discharging establishment side system 1 (S004). And if data is received through the communication adapter 24 from all the sludge discharge establishment side systems 1, CPU20 will advance a process to S101. In addition, the data acquired from each sludge discharge establishment side system 1 may be input using the keyboard 22 by the person in charge. That is, the communication adapter 24 and the keyboard 22 correspond to an input device.

  In S <b> 101, the CPU 20 stores the input data obtained from each sludge discharge establishment-side system 1 in the hard disk 25. By performing this process, the history of data obtained in the past from each sludge discharge establishment-side system 1 is accumulated in the hard disk 25.

In the next S102, the CPU 20 calculates the average calorific value of the organic sludge solidified fuel C recovered at the next recovery time of the organic sludge solidified fuel C from each sludge discharge establishment 100. That is, for each sludge discharge establishment 100, based on the amount of sludge after drying and the moisture content after drying in the data received from the previous collection to the time of the processing and stored in the hard disk 25, the current storage Calculate the total amount of organic sludge solidified fuel C and calorific value stored in the tank, and calculate the average amount of sludge after drying and the moisture content after drying based on the values. By multiplying the amount average by the number of days remaining until the next collection, the total amount of organic sludge solidified fuel C that will be added by the next collection is calculated, and then the former organic sludge solids are calculated. The sum of the amount of the liquefied fuel C and the amount of the latter organic sludge solidified fuel C is added up. In this way, the sum of the total amount of organic sludge solidified fuel C calculated for each sludge discharge establishment 100 and the average value of the calorific value of all sludge discharge establishments 100 (that is, at the time of the next recovery) The total calorific value of all the organic sludge solidified fuel C that will be recovered from the total sludge discharge establishment 100) is the sum of the amount of organic sludge solidification fuel C and the total sludge discharge establishment 100 By dividing, the expected average calorific value of all the organic sludge solidified fuel C that will be recovered from the total sludge discharge establishment 100 at the time of the next recovery is calculated. Then, the CPU 20 determines whether or not the calculated expected average calorific value satisfies the quality (predetermined condition) agreed with the operator of the fuel collection facility 120 (corresponding to a determination unit).

  Then, if it is determined in S102 that the expected average heat generation amount satisfies the quality, the CPU 20 uses the processing conditions presented to each sludge discharge establishment-side system 1 on the previous day as it is in S110. It transmits to the sludge discharge establishment side system 1.

  On the other hand, when it is determined in S102 that the predicted average heat generation amount does not satisfy the quality, the CPU 20 determines in S103 that the average heat generation amount calculated in S102 for each sludge discharge establishment-side system 1 is the fuel take-up. The degree of deviation (degree of deviation) from the quality agreed with the operator of the office 120 is checked.

  In the next S104, a predetermined number of sludge discharge establishments 100 having a large degree of deviation checked in S103 are listed in order from the largest.

  In the next S105, the CPU 20 executes a priority order determination process. FIG. 11 is a flowchart showing the priority order determination subroutine executed in S105. In the first S201 after entering this subroutine, the CPU 20 sorts the sludge discharge establishments 100 listed in S104 in descending order of the sum of the organic sludge solidified fuel C calculated in S102. to determine the order.

  In S202, the CPU 20 checks the order determined in S201, and determines whether there is a place where the plurality of sludge discharge establishments 100 are in the same order. If there is no place where the plurality of sludge discharge establishments 100 have the same rank, the priority order determination subroutine is terminated as it is.

  On the other hand, if there is a place where the plurality of sludge discharge establishments 100 have the same rank, the CPU 20 in the next S203, among the plurality of sludge discharge establishments 100, the auxiliary agent The sludge discharge establishment 100 that has no restriction (that is, the application to the distributor to refuse the use of the auxiliary agent in advance) is determined to have a high priority.

  In next S204, the CPU 20 checks the order again and determines whether there is a place where the plurality of sludge discharge establishments 100 have the same order. If there is no place where the plurality of sludge discharge establishments 100 have the same rank, the priority order determination subroutine is terminated as it is.

  In contrast, if there are places where a plurality of sludge discharge office 100 is in the same rank, CPU 20, in the next S205, a plurality of sludge discharge sites 100 are at the same rank, processing cost ( That is, the priorities are reset in ascending order of the cost per unit amount of the organic sludge solidified fuel C that has been reported in advance.

In the next S206, the CPU 20 checks the order again, and a plurality of sludge discharge establishments 1
It is determined whether or not there is a place where 00 has the same rank. If there is no place where the plurality of sludge discharge establishments 100 have the same rank, the priority order determination subroutine is terminated as it is.

On the other hand, if there is a place where the plurality of sludge discharge establishments 100 are in the same rank, the CPU 20 discharges the plurality of sludge discharge establishments 100 in the same order in the next S207 to the discharge CO _2. In other words, priorities are reset in ascending order (ie, the ratio of the amount of gas used by the dryer to the amount of sludge after drying calculated in S102 per day). When S207 is completed, the CPU 20 ends the priority order determination subroutine.

  In the main routine of FIG. 10 in which the process is returned from the priority order determining subroutine, the CPU 20 advances the process from S105 to S106.

  In S106, after the sludge discharge establishment 100 with the highest priority determined in S105 is determined as a process target, the process proceeds to S107. The CPU 20 that executes the processes of S104 to S106 and the process of S109 described later corresponds to a determination unit.

  In S107, the CPU 20 executes a predicted heat generation recalculation process for the sludge discharge establishment 100 determined as a processing target in S106 (or S109 described later). FIG. 12 is a flowchart showing the predicted heat generation recalculation subroutine executed in S107. In the first step S301 after entering this subroutine, the CPU 20 checks whether or not there is an auxiliary agent restriction on the processing target sludge discharge establishment 100. Then, the CPU 20 advances the process to S302 if there is an auxiliary agent restriction, and advances the process to S304 if there is no auxiliary agent restriction.

  In S304, the CPU 20 determines the value of the auxiliary agent addition rate that should be notified to the processing target sludge discharge establishment 100 as the processing condition, rather than the value notified to the processing target sludge discharge establishment 100 the previous day. The value is changed to one level higher in the database 28.

  In the next S305, the CPU 20 reads out the moisture content after dehydration corresponding to the moisture content received in S101 and the additive addition amount determined in S304 in the adjuvant database 28. Further, the CPU 20 specifies a moisture content that is one step lower than the value of the moisture content after drying received at 101 (corresponding to a moisture content specifying means), and the processing target sludge discharge establishment that targets the specified moisture content. The drying database 27 for 100 is read. Next, the CPU 20 has a dryer air flow condition that is one step larger than the value notified to the processing target sludge discharge establishment 100 on the previous day from the column corresponding to the moisture content after dehydration in the read drying database 27. Read the dryer temperature condition combination. The CPU 20 that executes the processes of S304 and S305 corresponds to a process condition changing unit.

  In the next S306, the CPU 20 assumes that the organic sludge solidified fuel C having the water content selected in S305 is obtained from the target sludge discharge establishment 100 between tomorrow and the next recovery, and then S102. The recalculation of the expected average calorific value at is performed (corresponding to recalculation means). When S306 is completed, the CPU 20 ends the predicted heat generation amount recalculation subroutine, and returns the process to the main routine of FIG.

On the other hand, in S302, the CPU 20 specifies a moisture content that is one step lower than the value of the moisture content after drying received in 101 (corresponding to a moisture content specifying means), and the processing target sludge targeting the specified moisture content. The drying database 27 for the discharge establishment 100 is read out. Next, the CPU 20 in the read drying database 27 is one step larger than the value notified to the processing target sludge discharge establishment 100 on the previous day from the column corresponding to the water content after dehydration received in S101. A combination of the machine air volume condition and the dryer temperature condition is read out (corresponding to processing condition changing means).

  In the next S303, the CPU 20 assumes that the organic sludge solidified fuel C having the water content selected in S302 is obtained from the processing target sludge discharge establishment 100 between tomorrow and the next recovery, and then S102. The recalculation of the expected average calorific value at is performed (corresponding to the recalculation means). When S303 is completed, the CPU 20 ends the predicted heat generation amount recalculation subroutine and returns the process to the main routine of FIG.

  In the main routine of FIG. 10 in which the process has been returned, the CPU 20 advances the process from S107 to S108, and the expected average calorific value after the change of the condition calculated in S303 or S306 is the same as that of the operator of the fuel collection facility 120. It is re-determined whether or not the quality agreed between the two is satisfied (re-determination means).

  If it is determined in S108 that the predicted average heat generation amount does not satisfy the above quality, the CPU 20 determines in S109 that the sludge discharge establishment 100 of the next priority is a processing target (corresponding to a determination unit). ). If there is no unprocessed sludge discharge establishment 100 listed in S104, the sludge discharge establishment with the highest priority is determined again as a processing target. In this case, the change of the auxiliary agent addition rate in S304 is changed from the auxiliary agent addition rate changed in the previous process to a further higher auxiliary agent addition rate. Further, the drying database 27 read in S305 or S302 is changed to a target that has a moisture content that is one step lower than that read in the previous process.

  On the other hand, if it is determined in S108 that the predicted average calorific value satisfies the above quality, the CPU 20 determines in S110 that the sludge discharge establishment 100 that is not the processing target in S107 is the previous day. The processing conditions presented to each sludge discharge establishment-side system 1 are transmitted to the sludge discharge establishment-side system 1 as they are, and for the sludge discharge establishment 100 that is the processing target of S107, S304 and S305 or S302. The processing conditions changed in step 1 are transmitted to the sludge discharge establishment-side system 1.

  In S111 executed after S110, the CPU 20 waits for transmission of the processing conditions in S110 to be completed for all the sludge discharge establishment-side systems 1.

  In the next S112, it is checked whether or not an end command has been input. If no end command has been input, the process is performed in order to wait for data reception from each sludge discharge site system 1 on the next day. Return to. On the other hand, when the end command is input, the processing by the program 26 is ended.

  In this embodiment, a direct drying type dryer is used, but an indirect drying type dryer heated with steam or the like can also be used. In this case, the dryer operating condition is, for example, a residence time in the dryer.

1 Sludge discharge establishment side system 2 Central computer 17 Processing condition table 20 CPU
22 Keyboard 24 Communication adapter 25 Hard disk 26 Program 27 Drying database 28 Auxiliary database 100 Sludge discharge establishment 101 Sludge generation source 102 Dehydrator 103 Dryer

Claims (7)

Control the quality of organic sludge solidified fuel that is periodically collected from multiple sludge discharge facilities that each have a fueling facility that produces sludge solidified fuel by treating sludge according to the set treatment conditions A quality control device for
An input device for inputting the amount of organic sludge solidified fuel produced by the fueling facility and the calorific value per unit at each sludge discharge establishment;
A storage device for storing the amount of organic sludge solidified fuel and the amount of heat generated per unit for each sludge discharge establishment input after the previous collection;
Based on the amount of organic sludge solidified fuel and the amount of heat generated per unit for each sludge discharge establishment stored in the storage device, it is stored at each sludge discharge establishment at the next recovery time. Calculate the total heat and average calorific value per unit of solid waste sludge solid fuel, and the predicted average calorific value per unit of the total solid sludge solid fuel that will be stored in the total sludge discharge facility. A calculating means for calculating;
Determination means for determining whether the predicted average calorific value per unit of the entire organic sludge solidified fuel satisfies a predetermined condition;
Sludge in which the average calorific value per unit deviates from the predetermined condition when it is determined by the determining means that the predicted average calorific value per unit of the organic sludge solidified fuel as a whole does not satisfy the predetermined condition A determination means for determining an emission establishment as a processing condition change target;
With respect to the sludge discharge establishment determined as the treatment condition change target by the decision means, the treatment condition change means for changing the treatment condition in a direction to reduce the calorific value per unit of the organic sludge solidified fuel,
An organic sludge solidified fuel quality control apparatus comprising: processing conditions changed by the processing condition changing means; and notification means for notifying a sludge discharge establishment determined to be a processing condition change target. Heat generation per unit for specifying the heat generation amount per unit of the organic sludge solidified fuel generated in the fueling equipment of the sludge discharge establishment determined to be the processing condition change target under the processing conditions changed by the determining means A quantity identification means;
Prediction per unit of organic sludge solidified fuel that will be stored at all sludge discharge establishments at the next recovery under the calorific value per unit specified by the means for specifying calorific value per unit Recalculation means for recalculating the average calorific value;
Re-determination means that re-determines whether or not the predicted average calorific value per unit calculated by the recalculation means satisfies the predetermined condition;
For the sludge discharge establishment determined as the treatment condition change target by the decision means, the decision means also changes the treatment condition in a direction to lower the calorific value per unit of the organic sludge solidified fuel. The quality control device according to claim 1, wherein The determining means prioritizes several sludge discharge establishments in descending order of the amount of organic sludge solidified fuel in descending order of the degree of deviation of the average calorific value per unit from the predetermined condition. 3. The quality control device for solidified organic sludge fuel according to claim 2, wherein the processing conditions are changed one by one in descending order of priority. The quality control apparatus for solidified organic sludge fuel according to claim 1, wherein the fueling facility includes a dryer, and the processing condition is a set temperature in the dryer. The quality control device for solidified organic sludge fuel according to claim 1, wherein the fueling facility includes a dryer, and the processing condition is an air flow rate in the dryer. The quality control of the organic sludge solidified fuel according to claim 1, wherein the fueling facility includes a dehydrator, and the processing condition is an addition rate of the auxiliary agent to be added to the dehydrator with respect to the sludge. apparatus. Control the quality of organic sludge solidified fuel that is periodically collected from multiple sludge discharge facilities that each have a fueling facility that produces sludge solidified fuel by treating sludge according to the set treatment conditions A quality control program for the computer,
An input device for inputting the amount of organic sludge solidified fuel produced by the fueling facility and the calorific value per unit at each sludge discharge establishment;
A storage device for storing the amount of organic sludge solidified fuel and the amount of heat generated per unit for each sludge discharge establishment input after the previous collection;
Based on the amount of organic sludge solidified fuel and the amount of heat generated per unit for each sludge discharge establishment stored in the storage device, it is stored at each sludge discharge establishment at the next recovery time. Calculate the total heat and average calorific value per unit of solid waste sludge solid fuel, and the predicted average calorific value per unit of the total solid sludge solid fuel that will be stored in the total sludge discharge facility. A calculating means for calculating;
Determination means for determining whether the predicted average calorific value per unit of the entire organic sludge solidified fuel satisfies a predetermined condition;
Sludge in which the average calorific value per unit deviates from the predetermined condition when it is determined by the determining means that the predicted average calorific value per unit of the organic sludge solidified fuel as a whole does not satisfy the predetermined condition A determination means for determining an emission establishment as a processing condition change target;
With respect to the sludge discharge establishment determined as the treatment condition change target by the decision means, the treatment condition change means for changing the treatment condition in a direction to reduce the calorific value per unit of the organic sludge solidified fuel,
A quality control program for organic sludge solidified fuel, which functions as a processing means changed by the processing condition changing means and a notification means for notifying a sludge discharge establishment determined to be a processing condition change target.

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