CN102537978A - Sludge burning control method and sludge burning device - Google Patents
Sludge burning control method and sludge burning device Download PDFInfo
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- CN102537978A CN102537978A CN2010106168987A CN201010616898A CN102537978A CN 102537978 A CN102537978 A CN 102537978A CN 2010106168987 A CN2010106168987 A CN 2010106168987A CN 201010616898 A CN201010616898 A CN 201010616898A CN 102537978 A CN102537978 A CN 102537978A
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Abstract
The invention provides a sludge incineration control method and a sludge incineration device, wherein at least the water spray amount or the auxiliary fuel supply amount in a sludge incinerator is adjusted, so that the temperature in the sludge incinerator can be controlled within a certain range; the sludge incineration control method is characterized in that the temperature of the combustion air supplied into the sludge incinerator is adjusted as per the heat productivity of the sludge. Even under the condition that the properties of the sludge changes greatly, the stable combustion state of the sludge incinerator can be efficiently ensured, the demands for a great deal of auxiliary fuel and a great deal of cooling water are avoided, the system is miniaturized, and the cost is lowered.
Description
Technical field
The present invention relates to a kind of sludge incineration control method and sludge incineration equipment.
Background technology
In the prior art, generally adopt sludge incinerator that mud is carried out burning disposal.For the burning in sludge incinerator operation is remained on stable status, the ignition temperature of known with good grounds sludge incinerator, the technology (patent documentation 1) that the cooling water that supplies in the stove is controlled.But; For the technology that proposes in the patent documentation 1, if the caloric value of mud is unstable, the words that change in scope significantly; The load that can cause the supply adjustment amount of cooling water very big, increase cooling water system; And if the caloric value of mud is lower,, can not the ignition temperature of sludge incinerator be maintained the state of smooth combustion even cooling water can occur not supplying with.
To this, the known comparatively stable technology (patent documentation 2) of quantity delivered that has pair mud quantity delivered to adjust to make cooling water.But; The mud quantity delivered is adjusted comparatively trouble; Other mud quantity delivered adjustment equipment need be set, and under the caloric value situation that scope changes significantly of mud, can not effectively the ignition temperature of sludge incinerator be maintained the state of smooth combustion.
To this, also known have a technology (patent documentation 3) that improves the moving air temperature that supplies to sludge incinerator in order to reduce auxiliary fuel.But this technology can not maintain the ignition temperature of sludge incinerator the state of smooth combustion equally effectively under the caloric value situation that scope changes significantly of mud.
And, for tackle the big present situation of mud caloric value mobility scale, that ignition temperature is kept is stable, the burning capacitys such as combustion adaptive property of combustion apparatus such as sludge incinerator must leave bigger leeway, can cause the huge or cost of system equipment to rise.
Patent documentation 1: japanese kokai publication hei 09-33020
Patent documentation 2: japanese kokai publication hei 05-280719
Patent documentation 3: TOHKEMY 2001-241636
Summary of the invention
In view of the above-mentioned problems; The invention provides a kind of sludge incineration control method and sludge incineration equipment; Even it also can be guaranteed the fired state of stable sludge incinerator effectively, and need not a large amount of auxiliary fuels and a large amount of cooling waters in the face of under the situation of the bigger variation of sludge character; And the system equipment miniaturization, cost is lower.
Technical scheme 4 of the present invention is, according to the sludge incineration control method of technical scheme 1, when said water spray amount being detected and judge that mud is middle caloric value, is uniform temperature with the combustion air temperature maintenance that supplies to said sludge incinerator.
Technical scheme 5 of the present invention is, according to the sludge incineration control method of technical scheme 4, when said water spray amount and combustion air temperature being detected and judge that mud can not spontaneous combustion, auxiliary fuel supplied to said sludge incinerator.
Technical scheme 6 of the present invention is according to the sludge incineration control method of technical scheme 5, when said auxiliary fuel quantity delivered being detected and judge that mud is lower calorific value, the combustion air temperature that supplies to said sludge incinerator to be risen.
Technical scheme 7 of the present invention is; A kind of sludge incineration equipment; It is characterized in that; Sludge incinerator is equipped with temperature measurement unit, water spray amount adjustment unit, auxiliary fuel quantity delivered adjustment unit and combustion air temperature adjustment unit in the sludge incinerator relatively, and this combustion air temperature adjustment unit supplies to the combustion air temperature of said sludge incinerator according to the caloric value adjustment of mud.
Technical scheme 9 of the present invention is; Sludge incineration equipment according to technical scheme 7 also has: the water spray amount detection unit that said water spray amount is detected, the auxiliary fuel quantity delivered detecting unit that said auxiliary fuel quantity delivered is detected and the combustion air temperature detecting unit that said combustion air temperature is detected.
Adopt technical scheme of the present invention; Even, also can guarantee the fired state of stable sludge incinerator effectively, and need not a large amount of auxiliary fuels and a large amount of cooling waters in the face of under the situation of the bigger variation of sludge character; Thereby can make the efficient completing combustion of mud; And can reduce the load of auxiliary fuel system and cooling water system, and the system equipment miniaturization, cost is lower.
Description of drawings
Fig. 1 is the synoptic diagram that system is controlled in sludge incineration of the present invention.
Fig. 2 is the key diagram that the adjustment of the sludge incineration control system of embodiments of the invention 1 is moved.
Fig. 3 is the key diagram that the adjustment of the sludge incineration control system of embodiments of the invention 2 is moved.
The specific embodiment
With reference to figure 1,2, the content of embodiment 1 is elaborated.
As shown in Figure 1, sludge incineration equipment is equipped with respect to sludge incinerator 1: temperature measurement unit 3, water spray amount adjustment unit 4, auxiliary fuel quantity delivered adjustment unit 5 and combustion air temperature adjustment unit 6 in the sludge incinerator.
One sidewall of sludge incinerator 1 is provided with the mud input port, and this mud input port is dropped into machine 2 with mud and is connected, and mud is put in the sludge incinerator 1 from the mud input port that this mud drops into machine 2.Then, with about 850 ℃ ignition temperature mud is carried out burn processing through sludge incinerator 1.But stove internal combustion temperature is not limited to about 850 ℃, and pattern changes as requested.Burning gases rise, and in burner hearth, after about 850 ℃ ignition temperature is by completing combustion, discharge from sludge incinerator top.
This unit comprises thermometer 31,32, and thermometer 31 is arranged on the top of sludge incinerator 1, and thermometer 32 is arranged on the bottom of sludge incinerator 1.The signal that thermometer 31 is measured sends to water spray amount adjustment unit 4, and the signal that thermometer 32 is measured sends to auxiliary fuel quantity delivered adjustment unit 5.
The stove internal combustion temperature that water spray amount adjustment unit 4 is measured according to temperature measurement unit in the sludge incinerator 3 is adjusted the water spray amount that supplies to sludge incinerator 1.And water spray amount adjustment unit 4 is measured stove cooling water quantity delivered.
This unit comprises: stove apparatus for supplying cool water 41, flow rate regulating valve 42, flowmeter 43, TIC system (temperature indication automatic regulating system) 44 and FI device (flow measurement device) 45.Stove apparatus for supplying cool water 41 will supply to the sprayer unit that is installed in the sludge incinerator 1 from the cooling water of tank, through this sprayer unit cooling water will be sprayed onto in the sludge incinerator 1, reduce stove internal combustion temperature.The signal that TIC system 44 accepts from thermometer 31, according to this signal, the valve of control flow rate regulating valve 42 opens and closes and carries out PID and control.Through this flow rate regulating valve 42, regulate the cooling water inflow that supplies in the sludge incinerator 1.Flowmeter 43 is used to measure stove cooling water quantity delivered F1, and 45 pairs of stove cooling waters of FI device quantity delivered F1 carries out time average to be handled, and obtains the average quantity delivered A of stove cooling water, and the average quantity delivered A of this stove cooling water is sent to calculation element 69.That is, TIC system 44 increases and decreases the control of stove cooling water quantity delivered, makes stove internal combustion temperature become about 850 ℃.
The stove internal combustion temperature that auxiliary fuel quantity delivered adjustment unit 5 is measured according to temperature measurement unit in the sludge incinerator 3 is adjusted the auxiliary fuel quantity delivered that supplies to sludge incinerator 1.And auxiliary fuel quantity delivered adjustment unit 5 is measured the auxiliary fuel quantity delivered.
This unit comprises: auxiliary fuel supply system 51, flow rate regulating valve 52, flowmeter 53, TIC system 54 and FI device 55.Auxiliary fuel supply system 51 supplies to auxiliary fuel in the sludge incinerator 1, makes the burning of sludge incinerator 1 carry out combustion-supporting operation.The signal that TIC system 54 accepts from thermometer 32, according to this signal, the valve of control flow rate regulating valve 52 opens and closes and carries out PID and control.Through this flow rate regulating valve 52, regulate the auxiliary fuel quantity delivered that supplies in the sludge incinerator 1.Flowmeter 53 is used to measure auxiliary fuel quantity delivered F2, and 55 pairs of auxiliary fuel quantity delivereds of FI device F2 carries out time average to be handled, and obtains the average quantity delivered B of auxiliary fuel, and the average quantity delivered B of this auxiliary fuel is sent to calculation element 69.That is, also become approximately below 850 ℃ the time even drop to bottom line (almost 0L/h), stove internal combustion temperature in stove cooling water quantity delivered, TIC system 54 increases and decreases the control of stove cooling water quantity delivered, makes stove internal combustion temperature become about 850 ℃.Otherwise, also become approximately more than 850 ℃ the time even drop to bottom line (0L/h), stove internal combustion temperature in the auxiliary fuel quantity delivered, TIC system 44 increases and decreases the control of stove cooling water quantity delivered, makes stove internal combustion temperature become about 850 ℃.
Combustion air temperature adjustment unit 6 supplies to the combustion air temperature of sludge incinerator 1 according to the caloric value adjustment of mud.Calculation element 69; The auxiliary fuel quantity delivered that stove cooling water quantity delivered of being measured according to water spray amount adjustment unit 4 and auxiliary fuel quantity delivered adjustment unit 5 are measured is judged the caloric value of mud; According to this caloric value, carry out the control that the 3rd preheated air temperature is maintained design temperature (medium temperature) or the 3rd preheated air temperature is begun to increase and decrease from design temperature (medium temperature).
This unit comprises steam condensate (SC) regenerative air heater 61, steam-type air preheater 62 and exhaust air preheater 63, can in 250 ℃-380 ℃ scope, adjust the 3rd preheated air temperature.Steam condensate (SC) regenerative air heater 61 heats as thermal source the heat of steam condensate (SC) to air.Steam-type air preheater 62 heats as thermal source the heat of steam to air.Exhaust air preheater 63 will heat air as thermal source from the heat of the discharge of the burning in the sludge incinerator 1 gas.
Air is blown into steam condensate (SC) regenerative air heater 61 through air blast 7, carries out the heating in the 1st stage.The 1st preheated air by after 61 heating of steam condensate (SC) regenerative air heater gets into steam-type air preheater 62, carries out the heating in the 2nd stage.The 2nd preheated air by after 62 heating of steam-type air preheater gets into exhaust air preheater 63, carries out the heating in the 3rd stage.The 3rd preheated air that is deflated after regenerative air heater 63 heats is transported in the sludge incinerator 1.
About 850 ℃ of the temperature of the burning gases of discharging in the sludge incinerator 1, these burning gases after being deflated regenerative air heater 63 and utilizing as thermal source, about 700 ℃ of its temperature, and be transported to heat recovery equipment and exhaust gas treatment device 8.After the processing through heat recovery equipment and exhaust gas treatment device 8, be discharged to the atmosphere from chimney.
Certainly, also can stove cooling water quantity delivered F1 and auxiliary fuel quantity delivered F2 directly be sent to calculation element 69, carry out time average by calculation element 69 and handle, obtain average quantity delivered A of stove cooling water or the average quantity delivered B of auxiliary fuel.
Combustion air temperature adjustment unit 6 will be adjusted to the value of regulation as the 3rd preheated air temperature of the combustion air temperature that supplies to sludge incinerator 1 through the 1st preheated air temperature, the 2nd preheated air temperature are regulated.
Below, the control method of preheated air temperature (moving air temperature) is described.
Fig. 2 is the key diagram that the adjustment of the sludge incineration control system of embodiments of the invention 1 is moved, and is used to explain the control method of preheated air temperature.
As shown in Figure 2, Fig. 2 is made up of three charts, is respectively chart 1 (top of Fig. 2), chart 2 (middle part of Fig. 2), chart 3 (bottom of Fig. 2).
The transverse axis of 3 charts is common, is the average mud caloric value of the mud in the input sludge incinerator, the i.e. caloric value of the actual mud (partial desiccation mud or partial desiccation mud+dewatered sludge) that drops into.Wherein, QNorm. representes the mud caloric value of design point.In this example, the caloric value of solids benchmark is about 10000 [kJ/kg-ds], and the caloric value that drops into the mud benchmark is about 3300 [kJ/kg].So it is 3300 [kJ/kg] that QNorm. is made as the caloric value that drops into the mud benchmark.QMin. be the corresponding lower limit of the mud caloric value of present embodiment, be made as 3000 [kJ/kg].QMax. be the corresponding higher limit of the mud caloric value of present embodiment, be made as 3600 [kJ/kg].
Then, the longitudinal axis is described.The longitudinal axis of chart 1 is the 3rd preheated air temperature.TNorm. be the corresponding median of the 3rd preheated air temperature on the design point, be made as 300 ℃ in the present embodiment.TMax. be the corresponding higher limit of adjustable the 3rd preheated air temperature, be made as 380 ℃.TMin. be the corresponding lower limit of adjustable the 3rd preheated air temperature, be made as 250 ℃.
According to mud caloric value and the 3rd preheated air temperature, with the control area be divided into 3 zones, detailed be 4 zones.The scope of mud caloric value from design point to a certain degree is as " middle caloric value zone ".In this embodiment, caloric value zone in this, the 3rd preheated air temperature is controlled as promptly 300 ℃ of design temperatures.Middle caloric value zone is a division points with the mud caloric value of design point, is divided into " middle lower calorific value zone " and " middle golf calorific value zone ".Its mud caloric value of middle golf calorific value zone is higher than design point, and the 3rd preheated air temperature is controlled as 300 ℃.Its mud caloric value of middle lower calorific value zone is lower than design point, and the 3rd preheated air temperature is controlled as 300 ℃.With the mud caloric value than design point high and make the 3rd preheated air temperature than the low control range of design temperature as " golf calorific value zone ".With the mud caloric value than design point low and make the 3rd preheated air temperature than the high control range of design temperature as " lower calorific value zone ".
The longitudinal axis of chart 2 is the quantity delivered of stove cooling water.In regional, the middle lower calorific value of lower calorific value zone, stove cooling water quantity delivered is 0L/h.Near the design point QNorm. of mud caloric value, stove cooling water quantity delivered is 0L/h almost.Basically, the spontaneous combustion operation is managed in that the stove cooling water is become under the state of a small amount of spraying, even therefore also use a spot of stove cooling water at design point.Therefore, show with 0L/H almost.In middle golf calorific value zone, golf calorific value is regional, is essentially the state that the stove cooling water is supplied to.
The longitudinal axis of chart 3 is quantity delivereds of auxiliary fuel.In middle golf calorific value zone, golf calorific value is regional, the auxiliary fuel quantity delivered is 0L/H.Near the design point QNorm. of mud caloric value, the auxiliary fuel quantity delivered is 0L/H almost.In middle lower calorific value zone, lower calorific value is regional, is essentially the state that auxiliary fuel is supplied to.
Be positioned at design point situation 1. about the mud caloric value
At this moment, sludge incinerator is kept the spontaneous combustion operation.Through TIC system 44, water spray amount adjustment unit 4 control stove cooling water quantity delivered F1 make the stove internal combustion temperature of being measured by temperature measurement unit in the sludge incinerator 3 become about 850 ℃.Stove cooling water quantity delivered F1 is trace, almost 0L/h.The signal of the stove cooling water quantity delivered F1 that is measured is sent to calculation element 69.Stove cooling water quantity delivered F1 is controlled to be about 850 ℃ with trace with stove internal combustion temperature, so through TIC system 54, F2 is controlled to be almost 0L/h with the auxiliary fuel quantity delivered, the signal with the auxiliary fuel quantity delivered F2 that is measured sends to calculation element 69 simultaneously.Calculation element 69 is according to the stove cooling water quantity delivered F1 and the auxiliary fuel quantity delivered F2 of elapsed time average treatment, and being judged as the mud caloric value is about 3300 [kJ/kg], and the mud caloric value is positioned at QNorm..Thereby the 3rd preheated air temperature is maintained about 300 ℃, make sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature.
About the mud caloric value from 1. changing to 1. ', become high slightly situation the control method of golf calorific value zone ()
When the mud caloric value uprised, the heat that supplies in the stove increased, so stove internal combustion temperature will rise.At this moment, obtaining stove internal combustion temperature through 3 mensuration of temperature measurement unit in the sludge incinerator will rise.So through TIC system 44, water spray amount adjustment unit 4 increases the stove cooling water, F1 is controlled in the scope of 0-100L/h with stove cooling water quantity delivered, is about 850 ℃ thereby utilize the latent heat of water with stove internal combustion temperature maintenance.As long as supply with the stove cooling water, can it be about 850 ℃ just, so auxiliary fuel quantity delivered adjustment unit 5 is controlled to be 0L/h with auxiliary fuel quantity delivered F2 with stove internal combustion temperature maintenance.Calculation element 69 is judged as the mud caloric value and is arranged in the golf calorific value zone according to stove cooling water quantity delivered F1 (greater than 0 and less than 100L/h).Thereby the 3rd preheated air temperature is maintained about 300 ℃,, make sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature as the result of stove cooling water quantity delivered control.
About the mud caloric value from 1. changing to 1. ", become low slightly situation the control method of lower calorific value zone ()
During mud caloric value step-down, the heat that supplies in the stove reduces, so stove internal combustion temperature will descend.At this moment, obtaining stove internal combustion temperature through 3 mensuration of temperature measurement unit in the sludge incinerator will descend.So through TIC system 54, auxiliary fuel quantity delivered adjustment unit 5 increases auxiliary fuel, F2 is controlled in the scope of 0-25L/h with the auxiliary fuel quantity delivered, is about 850 ℃ thereby utilize the heat of auxiliary fuel with stove internal combustion temperature maintenance.Even the stove cooling water is supplied with bottom line, stove internal combustion temperature also becomes about below 850 ℃, so water spray amount adjustment unit 4 is controlled to be 0L/h with stove cooling water quantity delivered F1.Calculation element 69 is judged as the mud caloric value and is arranged in the lower calorific value zone according to auxiliary fuel quantity delivered F2 (greater than 0 and less than 25L/h).Thereby the 3rd preheated air temperature is maintained about 300 ℃, and the result as the control of auxiliary fuel quantity delivered makes sludge incinerator with the about 850 ℃ combustion-supporting in stable conditionly operation of stove internal combustion temperature.
State to stove cooling water quantity delivered F1 and sludge incinerator describes.When stove cooling water quantity delivered F1 was 0L/h, it was lower than QNorm. to be judged as the mud caloric value.Stove cooling water quantity delivered F1 is during for 0L/h almost, and being judged as the mud caloric value is the state before and after the QNorm..Stove cooling water quantity delivered F1 is when trace, and it is higher than QNorm. to be judged as the mud caloric value.Stove cooling water quantity delivered F1 more for a long time, it is high more a lot of than QNorm. to be judged as the mud caloric value.For with stove internal combustion temperature maintenance at about 850 ℃, need a large amount of stove cooling waters.Stove cooling water quantity delivered F1 is judged as the mud caloric value than QNorm. height a bit more after a little while.For with stove internal combustion temperature maintenance at about 850 ℃, can be corresponding with a spot of stove cooling water.Through the time average of monitoring stove cooling water quantity delivered, can hold fired state and mud caloric value in the sludge incinerator.
State to auxiliary fuel quantity delivered F2 and sludge incinerator describes.When auxiliary fuel quantity delivered F2 was 0L/h, it was higher than QNorm. to be judged as the mud caloric value.Auxiliary fuel quantity delivered F2 is during for 0L/h almost, and being judged as the mud caloric value is the state before and after the QNorm..Auxiliary fuel quantity delivered F2 is when trace, and it is lower than QNorm. that dirt is judged as the mud caloric value.Auxiliary fuel quantity delivered F2 more for a long time, it is more much lower than QNorm. to be judged as the mud caloric value.For with stove internal combustion temperature maintenance at about 850 ℃, need a large amount of auxiliary fuels.Auxiliary fuel quantity delivered F2 more after a little while, it is a little lower than QNorm. to be judged as the mud caloric value.For with stove internal combustion temperature maintenance at about 850 ℃, can be corresponding with a spot of auxiliary fuel.Through the time average of monitoring auxiliary fuel quantity delivered, can hold fired state and mud caloric value in the sludge incinerator.
, stove cooling water quantity delivered more situation (control method in golf calorific value zone) higher about the mud caloric value
At this moment, for stove internal combustion temperature maintenance at about 850 ℃, supply with a large amount of stove cooling waters.Through the time average of monitoring stove cooling water quantity delivered, the mud caloric value is positioned at the state in golf calorific value zone in the time of can holding this stove cooling water quantity delivered above 100L/h for many, mud caloric value.At this moment, make the 3rd preheated air temperature since 300 ℃ of minimizings (in 250-300 ℃ the scope).So stove internal combustion temperature descends, so through TIC system 44, water spray amount adjustment unit 4 reduces stove cooling water quantity delivered, utilizing the latent heat of water is about 850 ℃ with stove internal combustion temperature maintenance.As a result, stove cooling water quantity delivered is maintained 100L/h.
If the mud caloric value be chart 1 2. the time, in order to be that 300 ℃ state is about 850 ℃ with stove internal combustion temperature maintenance with the 3rd preheated air temperature, need stove cooling water quantity delivered F1 be increased to more than the 100L/h, can become chart 2 2..In the present invention; Water spray amount adjustment unit 4 is as long as supply with the stove cooling water; Can it be about 850 ℃ just with stove internal combustion temperature maintenance; So auxiliary fuel quantity delivered adjustment unit 5 is controlled to be 0L/h with auxiliary fuel quantity delivered F2, the present invention does not make stove cooling water quantity delivered F1 be increased to more than the 100L/h, replace make the 3rd preheated air temperature from chart 1 2. to 2. ' control that reduces.
Specifically, when stove cooling water quantity delivered surpasses 100L/h in the golf calorific value zone, in 250-300 ℃ scope, regulate the 3rd preheated air temperature and be about 850 ℃, thereby stove cooling water quantity delivered is maintained 100L/h stove internal combustion temperature maintenance.Its result, stove cooling water quantity delivered can be maintained in stove internal combustion temperature necessarily for about 850 ℃ with less quantity delivered, makes sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature.
Mud caloric value golf calorific value when zone from the golf calorific value zone moves to; Even 300 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃; And demonstrate the tendency of decline, and so water spray amount adjustment unit 4 can make stove cooling water quantity delivered reduce, the control in golf calorific value zone in moving to.
And; When the mud caloric value surpasses the higher limit in golf calorific value zone; Even 250 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃, and demonstrates the tendency of rising, carries out correspondence more than the 100L/h so water spray amount adjustment unit 4 can only be increased to stove cooling water quantity delivered.But at this moment, the mud caloric value has exceeded scope of design, can give the alarm.
In the control in golf calorific value zone, the flow monitoring signal of 45 pairs of stove cooling waters of FI device quantity delivered carries out time average to be handled, thus the influence of the variation of the short time of removal stove cooling water quantity delivered.And, in order to be about 850 ℃,, can not regulate the 3rd preheated air temperature and carry out correspondence through regulating stove cooling water quantity delivered for the variation of short period of mud caloric value with stove internal combustion temperature maintenance.
The situation lower about the mud caloric value, that the auxiliary fuel quantity delivered is more (control method in lower calorific value zone)
At this moment, for stove internal combustion temperature maintenance at about 850 ℃, supply with a large amount of auxiliary fuels.Through the time average of monitoring auxiliary fuel quantity delivered, can be when being held in the auxiliary fuel quantity delivered and surpassing 25L/h the mud caloric value for less, the mud caloric value is positioned at the state in lower calorific value zone.
At this moment, make the 3rd preheated air temperature since 300 ℃ of increases (in 300-380 ℃ the scope).So stove internal combustion temperature rises, so through TIC system 54, auxiliary fuel quantity delivered adjustment unit 5 reduces the auxiliary fuel quantity delivereds and is about 850 ℃ with stove internal combustion temperature maintenance.Its result, auxiliary fuel quantity delivered F2 is maintained 25L/h.
If, the mud caloric value be chart 1 3. the time, in order to be that 300 ℃ state is about 850 ℃ with stove internal combustion temperature maintenance with the 3rd preheated air temperature, need auxiliary fuel quantity delivered F2 be increased to more than the 25L/h, can become chart 3 3..In the present invention; Even water spray amount adjustment unit 4 is minimized (almost 0L/h) with stove cooling water quantity delivered; Stove internal combustion temperature also becomes about below 850 ℃; So F1 is controlled to be 0L/h with stove cooling water quantity delivered, the present invention does not make auxiliary fuel quantity delivered F2 be increased to more than the 25L/h, replace make the 3rd preheated air temperature from chart 1 3. to 3. ' control that increases.
Specifically, when the auxiliary fuel quantity delivered surpasses 25L/h in the lower calorific value zone, in 300-380 ℃ scope, regulate the 3rd preheated air temperature and be about 850 ℃, thereby make the auxiliary fuel quantity delivered be maintained 25L/h stove internal combustion temperature maintenance.
Its result, the auxiliary fuel quantity delivered can be maintained in temperature in the stove necessarily for about 850 ℃ with less quantity delivered, makes sludge incinerator with the about 850 ℃ combustion-supporting in stable conditionly operation of stove internal combustion temperature.
Mud caloric value lower calorific value when zone from the lower calorific value zone moves to; Even 300 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃; And demonstrate the tendency of rising, so auxiliary fuel quantity delivered adjustment unit 5 can make the auxiliary fuel quantity delivered reduce, in moving in the control in lower calorific value zone.
And; The mud caloric value becomes the lower limit in lower calorific value zone when following; Even 380 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃, and demonstrates the tendency of decline, carries out correspondence more than the 25L/h so auxiliary fuel quantity delivered adjustment unit 5 can only be increased to the auxiliary fuel quantity delivered.But at this moment, the mud caloric value has exceeded scope of design, can give the alarm.
In the control in lower calorific value zone, carry out time average through flow monitoring signal and handle the auxiliary fuel quantity delivered, thus the influence of the variation of the short time of removal auxiliary fuel quantity delivered.And, in order to be about 850 ℃,, can obstructedly to overregulate that the 3rd preheated air temperature carries out correspondence and carry out correspondence through regulating the auxiliary fuel quantity delivered for the variation of short period of mud caloric value with stove internal combustion temperature maintenance.
Through calculation element 69 and combustion air temperature adjustment unit 6, under the situation higher in the mud caloric value, that stove cooling water quantity delivered is more, the adjustment that the 3rd preheated air temperature is descended.Under the situation lower in the mud caloric value, that the auxiliary fuel quantity delivered is more, the adjustment that the 3rd preheated air temperature is risen.
Adopt the foregoing description 1; Even, also can guarantee the fired state of stable sludge incinerator effectively, and need not a large amount of auxiliary fuels and a large amount of cooling waters in the face of under the situation of the bigger variation of sludge character; Thereby mud is efficiently burnt; And can reduce the load of auxiliary fuel system and cooling water system, and can make system's miniaturization, reduce cost.
With reference to figure 1,3, the content of embodiment 2 is elaborated.Embodiment 2 put on identical label with embodiment 1 identical parts, and detailed.
The sludge incineration equipment of embodiment 2 and the sludge incineration equipment of embodiment 1 are identical, so omit explanation here.
Below, the control method of preheated air temperature (moving air temperature) is described.
Fig. 3 is the key diagram that the adjustment of the sludge incineration control system of embodiments of the invention 2 is moved, and is used to explain the control method of preheated air temperature.
As shown in Figure 3, Fig. 3 is made up of three charts, is respectively chart 1 (top of Fig. 3), chart 2 (middle part of Fig. 3), chart 3 (bottom of Fig. 3).
The transverse axis of 3 charts is common, is the average mud caloric value of the mud in the input sludge incinerator, the i.e. caloric value of the actual mud (partial desiccation mud or partial desiccation mud+dewatered sludge) that drops into.Wherein, QNorm. representes the mud caloric value of design point.In this example, the caloric value of solids benchmark is about 10000 [kJ/kg-ds], and the caloric value that drops into the mud benchmark is about 3300 [kJ/kg].So it is 3300 [kJ/kg] that QNorm. is made as the caloric value that drops into the mud benchmark.QMin. be the corresponding lower limit of the mud caloric value of present embodiment, be made as 3000 [kJ/kg].QMax. be the corresponding higher limit of the mud caloric value of present embodiment, be made as 3600 [kJ/kg].
Then, the longitudinal axis is described.The longitudinal axis of chart 1 is the 3rd preheated air temperature.TNorm. be the 3rd preheated air temperature on the design point, be made as 300 ℃ in the present embodiment.TMax. be the corresponding higher limit of adjustable the 3rd preheated air temperature, be made as 380 ℃.TMin. be the corresponding lower limit of adjustable the 3rd preheated air temperature, be made as 250 ℃.
According to mud caloric value and the 3rd preheated air temperature, with the control area be divided into 3 zones, detailed be 4 zones.The scope of mud caloric value from design point to a certain degree is as " middle caloric value zone ".In this embodiment, caloric value zone in this, the 3rd preheated air temperature is controlled as promptly 300 ℃ of design temperatures.Middle caloric value zone is a division points with the mud caloric value of design point, is divided into " middle lower calorific value zone " and " middle golf calorific value zone ".Its mud caloric value of middle golf calorific value zone is higher than design point, and the 3rd preheated air temperature is controlled as 300 ℃.Its mud caloric value of middle lower calorific value zone is lower than design point, and the 3rd preheated air temperature is controlled as 300 ℃.With the mud caloric value than design point high and make the 3rd preheated air temperature than the low control range of design temperature as " golf calorific value zone ".With the mud caloric value than design point low and make the 3rd preheated air temperature than the high control range of design temperature as " lower calorific value zone ".
The longitudinal axis of chart 2 is the quantity delivered of stove cooling water.In the lower calorific value zone, stove cooling water quantity delivered is about 0L/h.Basically, the spontaneous combustion operation is managed in that the stove cooling water is become under the state of a small amount of spraying, even therefore also use a spot of stove cooling water in the lower calorific value zone.Therefore, show with about 0L/H.In middle caloric value zone, stove cooling water quantity delivered changes corresponding to the mud caloric value.In the golf calorific value zone, be essentially the state that the stove cooling water is supplied to, quantity delivered is bigger.
The longitudinal axis of chart 3 is quantity delivereds of auxiliary fuel.In middle caloric value zone, golf calorific value is regional, the auxiliary fuel quantity delivered is 0L/H.In the lower calorific value zone, be positioned at the design object scope in the mud caloric value, the auxiliary fuel quantity delivered is 0L/H.
Be positioned at design point situation 1. about the mud caloric value
At this moment, the stove internal combustion temperature of measuring through temperature measurement unit in the sludge incinerator 3 is that about 850 ℃, sludge incinerator are kept the spontaneous combustion operation.Water spray amount adjustment unit 4 control stove cooling water quantity delivered F1 make the stove internal combustion temperature that temperature measurement unit 3 is measured in the sludge incinerator become about 850 ℃.Design point stove cooling water quantity delivered F1 1. becomes about 80L/h.
About the mud caloric value from 1. changing to 1. ', become high slightly situation the control method of golf calorific value zone ()
When the mud caloric value uprised, the heat that supplies in the stove increased, so stove internal combustion temperature will rise.At this moment, obtaining stove internal combustion temperature through 3 mensuration of temperature measurement unit in the sludge incinerator will rise.So through TIC system 44, water spray amount adjustment unit 4 increases the stove cooling water, F1 is controlled in the scope of 80-200L/h with stove cooling water quantity delivered, is about 850 ℃ thereby utilize the latent heat of water with stove internal combustion temperature maintenance.Auxiliary fuel quantity delivered adjustment unit 5 can be about 850 ℃ with stove internal combustion temperature maintenance just, so auxiliary fuel quantity delivered F2 is controlled to be 0L/h as long as supply with the stove cooling water.Calculation element 69 is judged as the mud caloric value and is arranged in the golf calorific value zone according to stove cooling water quantity delivered F1 (greater than 80 and less than 200L/h).Thereby the 3rd preheated air temperature is maintained about 300 ℃,, make sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature as the result of stove cooling water quantity delivered control.
About the mud caloric value from 1. changing to 1. ", become low slightly situation the control method of lower calorific value zone ()
During mud caloric value step-down, the heat that supplies in the stove reduces, so temperature will descend in the stove.At this moment, obtaining stove internal combustion temperature through 3 mensuration of temperature measurement unit in the sludge incinerator will descend.So through TIC system 44, water spray amount adjustment unit 4 reduces the stove cooling water, F1 reduces in the scope of 0-80L/h with stove cooling water quantity delivered, is about 850 ℃ with stove internal combustion temperature maintenance.Auxiliary fuel quantity delivered adjustment unit 5 can be about 850 ℃ with stove internal combustion temperature maintenance just, so auxiliary fuel quantity delivered F2 is controlled to be 0L/h as long as supply with the stove cooling water.Calculation element 69 is judged as the mud caloric value and is arranged in the lower calorific value zone according to stove cooling water quantity delivered F1 (greater than 0 and less than 80L/h).Thereby the 3rd preheated air temperature is maintained about 300 ℃, make sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature.
State to stove cooling water quantity delivered F1 and sludge incinerator describes.Stove cooling water quantity delivered F1 is 80L/h when following, and it is lower than QNorm. to be judged as the mud caloric value.When stove cooling water quantity delivered F1 was about 80L/h, being judged as the mud caloric value was the state before and after the QNorm..Stove cooling water quantity delivered F1 is 80L/h when above, and it is higher than QNorm. to be judged as the mud caloric value.Stove cooling water quantity delivered F1 is that 80L/h is above and when a lot, and it is higher much than QNorm. to be judged as the mud caloric value.For with stove internal combustion temperature maintenance at about 850 ℃, need a large amount of stove cooling waters.Stove cooling water quantity delivered F1 is below the 80L/h and seldom the time, and it is more much lower than QNorm. to be judged as the mud caloric value.For with stove internal combustion temperature maintenance at about 850 ℃, can be corresponding with a spot of stove cooling water.Through the time average of monitoring stove cooling water quantity delivered, can hold fired state and mud caloric value in the sludge incinerator.
State to auxiliary fuel quantity delivered F2 and sludge incinerator describes.In middle caloric value zone, no matter how many mud caloric values is, auxiliary fuel quantity delivered F2 is 0L/h.Promptly in middle caloric value zone, implement the spontaneous combustion operation.Time average through monitoring stove cooling water quantity delivered is 0-200L/h, and fired state and the mud caloric value that can hold in the sludge incinerator are middle caloric value zone.In middle caloric value zone, it is about 300 ℃ that the 3rd preheated air temperature is maintained medium temperature.
, stove cooling water quantity delivered more situation (control method in golf calorific value zone) higher about the mud caloric value
At this moment, for stove internal combustion temperature maintenance at about 850 ℃, supply with a large amount of stove cooling waters.Through the time average of monitoring stove cooling water quantity delivered, can the mud caloric value be positioned at the regional state of golf calorific value when being held in this stove cooling water quantity delivered and surpassing 200L/h for many, mud caloric value.At this moment, make the 3rd preheated air temperature since 300 ℃ of minimizings (in 250-300 ℃ the scope).So stove internal combustion temperature descends, so through TIC system 44, water spray amount adjustment unit 4 reduces stove cooling water quantity delivered, utilizing the latent heat of water is about 850 ℃ with stove internal combustion temperature maintenance.As a result, stove cooling water quantity delivered is maintained 200L/h.
If the mud caloric value be chart 1 2. the time, in order to be that 300 ℃ state is about 850 ℃ with stove internal combustion temperature maintenance with the 3rd preheated air temperature, need stove cooling water quantity delivered F1 be increased to more than the 200L/h, can become chart 2 2..In the present invention; Water spray amount adjustment unit 4 is as long as supply with the stove cooling water; Can it be about 850 ℃ just with stove internal combustion temperature maintenance; So auxiliary fuel quantity delivered adjustment unit 5 is controlled to be 0L/h with auxiliary fuel quantity delivered F2, the present invention does not make stove cooling water quantity delivered F1 be increased to more than the 200L/h, replace make the 3rd preheated air temperature from chart 1 2. to 2. ' control that reduces.
Specifically, when stove cooling water quantity delivered surpasses 200L/h in the golf calorific value zone, in 250-300 ℃ scope, regulate the 3rd preheated air temperature and be about 850 ℃, thereby stove cooling water quantity delivered is maintained 200L/h stove internal combustion temperature maintenance.Its result, stove cooling water quantity delivered can be maintained in stove internal combustion temperature necessarily for about 850 ℃ with less quantity delivered, makes sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature.
Mud caloric value golf calorific value when zone from the golf calorific value zone moves to; Even 300 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃; And demonstrate the tendency of decline, so water spray amount adjustment unit 4 can make stove cooling water quantity delivered reduce, in moving in the control in golf calorific value zone.
And; When the mud caloric value surpasses the higher limit in golf calorific value zone; Even 250 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃, and demonstrates the tendency of rising, carries out correspondence more than the 200L/h so water spray amount adjustment unit 4 can only be increased to stove cooling water quantity delivered.But at this moment, the mud caloric value has exceeded scope of design, can give the alarm.
In the control in golf calorific value zone, the flow monitoring signal of 45 pairs of stove cooling waters of FI device quantity delivered carries out time average to be handled, thus the influence of the variation of the short time of removal stove cooling water quantity delivered.And, in order to be about 850 ℃,, can not regulate the 3rd preheated air temperature and carry out correspondence through regulating stove cooling water quantity delivered for the variation of short period of mud caloric value with stove internal combustion temperature maintenance.
About the lower situation of mud caloric value (control method in lower calorific value zone)
At this moment, mud can not spontaneous combustion, so through TIC system 54, the supply of beginning auxiliary fuel is about 850 ℃ with stove internal combustion temperature maintenance.TIC system 44 is failure to actuate, but supplies with a certain amount of a spot of stove cooling water, with the increase of the caused stove cooling water of increase that carries out the mud caloric value swimmingly.
Through the time average of monitoring stove cooling water quantity delivered, can be that the mud caloric value is less about 0L/h (numerical value of Duo slightly than 0L/h) when following, the mud caloric value is positioned at the regional state of lower calorific value being held in stove cooling water quantity delivered F1.
At this moment, make the 3rd preheated air temperature since 300 ℃ of increases (in 300-380 ℃ the scope).So stove internal combustion temperature rises, so through TIC system 54, auxiliary fuel quantity delivered adjustment unit 5 reduces the auxiliary fuel quantity delivereds and is about 850 ℃ with stove internal combustion temperature maintenance.Its result, auxiliary fuel quantity delivered F2 is maintained about 0L/h.
If, the mud caloric value be chart 1 3. the time, in order to be that 300 ℃ state is about 850 ℃ with stove internal combustion temperature maintenance with the 3rd preheated air temperature, need to increase auxiliary fuel quantity delivered F2, can become chart 3 3..In the present invention, do not increase auxiliary fuel quantity delivered F2, replace (F2 is controlled to be 0L/h with the auxiliary fuel quantity delivered) make the 3rd preheated air temperature from chart 1 3. to 3. ' control that increases.
Specifically; Stove cooling water quantity delivered is that about 0L/h (numerical value of Duoing slightly than 0L/h) is when following in the lower calorific value zone; In 300-380 ℃ scope, regulate the 3rd preheated air temperature and be about 850 ℃, thereby the auxiliary fuel quantity delivered is maintained about 0L/h stove internal combustion temperature maintenance.
Its result, the auxiliary fuel quantity delivered can be continuously under the state of 0L/h, and stove internal combustion temperature is maintained in necessarily for about 850 ℃, makes sludge incinerator with the about 850 ℃ in stable condition ground spontaneous combustion operation of stove internal combustion temperature.
Mud caloric value lower calorific value when zone from the lower calorific value zone moves to; Even 300 ℃ of the 3rd preheated air temperatures; Stove internal combustion temperature can not be kept about 850 ℃; And demonstrate the tendency of rising, so water spray amount adjustment unit 4 can make stove cooling water quantity delivered increase, in moving in the control in lower calorific value zone.
And; The mud caloric value becomes lower calorific value zone lower limit when following; Even 380 ℃ of the 3rd preheated air temperatures, stove internal combustion temperature can not be kept about 850 ℃, and demonstrates the tendency of decline; Carry out correspondence so auxiliary fuel quantity delivered adjustment unit 5 can only be increased to the auxiliary fuel quantity delivered greater than 0L/h, can not keep the spontaneous combustion operation.But at this moment, the mud caloric value has exceeded scope of design, can give the alarm.
In the control in lower calorific value zone, the flow monitoring signal of auxiliary fuel quantity delivered is carried out time average handle, thereby remove the influence of variation of the short time of auxiliary fuel quantity delivered.And, in order to be about 850 ℃,, can not regulate the 3rd preheated air temperature and carry out correspondence through regulating the auxiliary fuel quantity delivered for the variation of short period of mud caloric value with stove internal combustion temperature maintenance.
Through calculation element 69 and combustion air temperature adjustment unit 6, under the situation higher in the mud caloric value, that stove cooling water quantity delivered is more, the adjustment that the 3rd preheated air temperature is descended.Under the lower situation of mud caloric value, the adjustment that the 3rd preheated air temperature is risen.
Adopt the foregoing description 2; Even, also can guarantee the fired state of stable sludge incinerator effectively, and need not auxiliary fuel and a large amount of cooling waters in the face of under the situation of the bigger variation of sludge character; Thereby can make mud spontaneous combustion efficiently; And can reduce the load of auxiliary fuel system and cooling water system, and can make system's miniaturization, reduce cost.
In embodiment 1; The detection of the mud caloric value during the control beginning is as follows: the auxiliary fuel quantity delivered is made as 0L/h; Control stove cooling water can be about 850 ℃ with stove internal combustion temperature maintenance, understands that the mud caloric value is in the regional arbitrary scope of middle golf calorific value zone, golf calorific value; Can not it be about 850 ℃ with stove internal combustion temperature maintenance; Understand that the mud caloric value is in the regional scope of middle lower calorific value zone, lower calorific value, so according to stove cooling water quantity delivered and the auxiliary fuel quantity delivered put down in writing among the embodiment 1, the zone of mud caloric value is detected.In embodiment 2; The detection of the mud caloric value during the control beginning is as follows: the auxiliary fuel quantity delivered is made as 0L/h; Control stove cooling water can be about 850 ℃ with stove internal combustion temperature maintenance, understands in arbitrary scope that the mud caloric value is middle lower calorific value zone, middle golf calorific value is regional, golf calorific value is regional; Can not it be about 850 ℃ with stove internal combustion temperature maintenance; Understand that the mud caloric value is in the scope in lower calorific value zone, so, the zone of mud caloric value is detected according to stove cooling water quantity delivered and the auxiliary fuel quantity delivered put down in writing among the embodiment 2.
Just for the specific embodiment of the present invention is described, the present invention also only is not limited to the above embodiments to the foregoing description.Can carry out suitable change or the characteristic of above-mentioned each embodiment is made up arbitrarily the foregoing description, only otherwise break away from the scope of the aim that claims put down in writing, all belong to the present invention and want protection domain.
In the above-described embodiments, combustion air temperature adjustment unit comprises exhaust air preheater, steam-type air preheater and steam condensate (SC) regenerative air heater.But the present invention is not limited to this; Combustion air temperature adjustment unit also can comprise exhaust air preheater, steam-type air preheater and steam condensate (SC) regenerative air heater one of at least, as long as can adjust to the combustion air temperature that supplies to sludge incinerator.
In the above-described embodiments, the set point QNorm. of mud caloric value is made as 3300 [kJ/kg], the corresponding higher limit of mud caloric value is made as 3600 [kJ/kg], and the corresponding lower limit of mud caloric value is made as 3000 [kJ/kg].But the invention is not restricted to this, can set set point QNorm., corresponding higher limit QMax., corresponding lower limit QMin. arbitrarily according to the actual conditions of mud caloric value.Equally, cited in the above-described embodiments various numerical value are not used to limit protection scope of the present invention, but are used for explaining better technical scheme of the present invention, can these numerical value be adjusted according to actual conditions.
Claims (9)
1. a sludge incineration control method is characterized in that, to adjusting one of at least of water spray amount in the sludge incinerator and auxiliary fuel quantity delivered, and so that the temperature in the said sludge incinerator is controlled in certain scope,
Corresponding to the caloric value of mud, adjustment supplies to the combustion air temperature of said sludge incinerator.
2. sludge incineration control method as claimed in claim 1 is characterized in that, when said water spray amount being detected and judge that mud is golf calorific value, the combustion air temperature that supplies to said sludge incinerator is reduced.
3. sludge incineration control method as claimed in claim 1 is characterized in that, when said water spray amount being detected and judge that mud is lower calorific value, the combustion air temperature that supplies to said sludge incinerator is risen.
4. sludge incineration control method as claimed in claim 1 is characterized in that, when said water spray amount being detected and judge that mud is middle caloric value, is uniform temperature with the combustion air temperature maintenance that supplies to said sludge incinerator.
5. sludge incineration control method as claimed in claim 1 is characterized in that, when said water spray amount and combustion air temperature being detected and judge that mud can not spontaneous combustion, auxiliary fuel is supplied to said sludge incinerator.
6. sludge incineration control method as claimed in claim 5 is characterized in that, when said auxiliary fuel quantity delivered being detected and judge that mud is lower calorific value, the combustion air temperature that supplies to said sludge incinerator is risen.
7. a sludge incineration equipment is characterized in that,
Relative sludge incinerator; Be equipped with temperature measurement unit, water spray amount adjustment unit, auxiliary fuel quantity delivered adjustment unit and combustion air temperature adjustment unit in the sludge incinerator, this combustion air temperature adjustment unit supplies to the combustion air temperature of said sludge incinerator according to the caloric value adjustment of mud.
8. sludge incineration equipment as claimed in claim 7 is characterized in that,
Said combustion air temperature adjustment unit comprise exhaust air preheater, steam-type air preheater and steam condensate (SC) regenerative air heater one of at least.
9. sludge incineration equipment as claimed in claim 7 is characterized in that,
Also have: the water spray amount detection unit that said water spray amount is detected, the auxiliary fuel quantity delivered detecting unit that said auxiliary fuel quantity delivered is detected and the combustion air temperature detecting unit that said combustion air temperature is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106168987A CN102537978A (en) | 2010-12-16 | 2010-12-16 | Sludge burning control method and sludge burning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106168987A CN102537978A (en) | 2010-12-16 | 2010-12-16 | Sludge burning control method and sludge burning device |
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| CN102537978A true CN102537978A (en) | 2012-07-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471132A (en) * | 2013-09-10 | 2013-12-25 | 北京机电院高技术股份有限公司 | Energy-saving heat-insulating temperature-reducing device and method for civil sludge incinerator |
| CN112912734A (en) * | 2018-12-27 | 2021-06-04 | 株式会社日立高新技术 | Automatic analyzer |
-
2010
- 2010-12-16 CN CN2010106168987A patent/CN102537978A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471132A (en) * | 2013-09-10 | 2013-12-25 | 北京机电院高技术股份有限公司 | Energy-saving heat-insulating temperature-reducing device and method for civil sludge incinerator |
| CN103471132B (en) * | 2013-09-10 | 2016-06-01 | 北京机电院高技术股份有限公司 | A kind of energy-saving heat-insulating heat sink for municipal sludge incinerator and method thereof |
| CN112912734A (en) * | 2018-12-27 | 2021-06-04 | 株式会社日立高新技术 | Automatic analyzer |
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Application publication date: 20120704 |