CN102770709B

CN102770709B - Method for generating power from exhaust heat and system for generating power from exhaust heat

Info

Publication number: CN102770709B
Application number: CN201180010772.8A
Authority: CN
Inventors: 三岛俊一; 河合伸季; 池上康之
Original assignee: NGK Insulators Ltd
Current assignee: NGK Insulators Ltd
Priority date: 2010-02-24
Filing date: 2011-02-23
Publication date: 2015-02-11
Anticipated expiration: 2031-02-23
Also published as: HK1176988A1; CN102770709A; JP2011174652A; JP5457880B2; KR101674705B1; KR20130010470A; WO2011105064A1

Abstract

Disclosed is a method for generating power from exhaust heat by effectively using the heat emitted from an incinerator. The method for generating power from exhaust heat includes: a first heat exchange step, in which hot air (2) heated by the exhaust gas from the incinerator (101) of a sewage treatment system (S) is supplied to a superheater (19), which is provided to the power generation system (G) at a position upstream from a turbine (10) and downstream from a separator (18), and undergoes heat exchange with a working liquid (L); a second heat exchange step, in which the hot air (2) is supplied to a heater (17) located upstream from the separator (18) and undergoes heat exchange with the working liquid (L); a waste water heat exchange step, in which the hot air (2) from the heater (17) undergoes heat exchange with the waste scrubbing water (W) emitted from the sewage treatment system (S) after scrubbing the exhaust gas; a third heat exchange step, in which the waste scrubbing water (W) is supplied to a vaporizer (16) upstream from the heater (17) and undergoes heat exchange with the working liquid (L); and a contact step when the hot air (2) comes into contact with the exhaust gas.

Description

Waste-heat power generation method and cogeneration systems

Technical field

The present invention relates to waste-heat power generation method and cogeneration systems, especially relate to waste-heat power generation method and the cogeneration systems of the potentiality heat that make use of the high-temp waste gas of discharging from the incinerator of sewage sludge incineration stove or incinerator etc.

Background technology

In recent years, and comparatively to be paid attention to global warming, coordinating of environmental problem, the expectation of economize energy technology is also being improved year by year.As the effort to this environmental problem etc., pay close attention to effective utilization of new forms of energy, future combat system, such as, the energy that trial utilizes effective utilization in the past and gone out of use is to produce new forms of energy.

Such as, in patent document 1, the potentiality heat disclosing the waste gas utilizing sewage sludge incineration stove to produce produces steam, is carried out the formation generated electricity by this steam.In addition, in patent document 2, disclose the burning gases adopting waste incineration to produce and make steam superheating, and this steam is imported steam turbine, carry out with this formation that generates electricity.Further, in patent document 3, by the potentiality heat of washing cigarette waste water obtained from the exhaust smoke processing device of sewage purification processing system, the work liquefied medium of electricity generation system is evaporated, by this working media steam driven turbine to carry out the formation generated electricity.

There is a lot of gas or the waste water that produce high temperature like this when burning sludge or rubbish, these heat energies in the past gone out of use are used for generating, a scheme part for these heat energies reclaimed with the form of electric energy.

In addition, for sewage sludge incineration stove, the temperature from the waste gas of this incinerator is about 800 DEG C ~ about 850 DEG C.So, in general incineration plant, prevent air preheater or other heat exchanger from reclaiming a part for used heat by white cigarette the waste gas of the high temperature from incinerator, be separated in dust collect plant again and remove dust, water washing is carried out further by smoke evacuation scrubbing tower, remove the NOX in waste gas, the compositions such as SOX.

Again, when incinerator is flowing incinerator, sometimes prevent the leading portion of air preheater from moving air preheater is set at white cigarette.Again, when dust collect plant is ceramic filter, can high temperature control of dust be carried out, but when bag collector, first will be cooled to less than 300 DEG C at cooling tower and carry out control of dust again.

In exhaust treatment system in common incineration plant like this, in smoke evacuation scrubbing tower, the waste gas of 200 DEG C ~ about 400 DEG C is cooled to about 40 DEG C, on the other hand, washes cigarette waste water and be discharged with the temperature of 60 DEG C ~ about 70 DEG C.Although this temperature of washing cigarette waste water is lower, specific heat of water is comparatively large, and therefore heat is comparatively large, mostly exceed waste gas hold 50% of heat.

Prior art document

Patent document

Patent document 1 Japanese Unexamined Patent Publication 2005-321131 publication

Patent document 2 Japanese Unexamined Patent Publication 9-310606 publication

Patent document 3 Japanese Unexamined Patent Publication 9-32513 publication

Summary of the invention

The technical problem that invention will solve

But in the scheme described in above-mentioned each patent document 1 ~ 3, only rest on and the thermal source be discharged during burning waste etc. is applied to electricity generation system, the efficiency of its using energy source not talkative is enough high.The organic efficiency of heat energy is applied to the position of electricity generation system or application process along with this thermal source and significantly changes, above-mentioned each patent document, is not the motion being enough to the efficiency improving such energy recovery.

Again, discharge thermal source from incinerator and be also not all limited to steady state value, its heat can change sometimes.In this case, discharge thermal source is applied to electricity generation system like this, discharges heat from heat source variable effect to generating efficiency, existence can not be stablized and be carried out the problem that generates electricity efficiently.

The present invention is in view of above-mentioned and make, and the illustrative problem of the present invention is, provides a kind of waste-heat power generation method and cogeneration systems, and it can effectively utilize the thermal source of discharging from incinerator, and improves this energy recovery efficiency, carries out stablizing, generating electricity efficiently.

The technical unit of dealing with problems

In order to solve the problems of the technologies described above, as the waste-heat power generation method of illustrative one side of the present invention, comprise: the 1st heat exchange steps, the warmed-up high temperature air of waste gas that incinerator by comprising from burning processing system is discharged is applicable to the 1st position, with the heat exchange of the high temperature air and working fluid that carry out the 1st position, the 1st position refer to made by working fluid turbine rotate with on the working fluid path carried out in the cogeneration systems that generates electricity, the upstream side of this turbine, the downstream of separator position; 2nd heat exchange steps, by the high temperature air after heat exchange is carried out in the 1st position being applicable to the 2nd position of the upstream side of the separator on working fluid path, with the heat exchange of the high temperature air and working fluid that carry out the 2nd position; Waste water heat exchange steps, carries out washing cigarette waste water and the heat exchange of the high temperature air after the heat exchange of the 2nd position, washes cigarette waste water and discharge from burning processing system after having washed waste gas; 3rd heat exchange steps, by washing the 3rd position that cigarette waste water is applicable to the upstream side of the 2nd position on working fluid path, to carry out the heat exchange of washing cigarette waste water and working fluid of the 3rd position after carrying out heat exchange with high temperature air; And contact procedure, make with wash cigarette waste water carry out heat exchange after high temperature air prevent air and waste gas from contacting as white cigarette.

High temperature air from burning processing system is applied to cogeneration systems, and carries out the heat exchange of high temperature air and working fluid, used heat therefore can be utilized to generate electricity efficiently.Again, at this high temperature air in the 1st position in the downstream of the upstream side separator of turbine, plurality of positions that the 2nd position of the upstream side of separator is such is applied to cogeneration systems, therefore, the heat exchange amount with working fluid can be increased, heat will give working fluid fully.

Be the 1st position after the separator of gaseous state at working fluid, first carry out heat exchange, make the working fluid of gaseous state overheated.Then heat exchange is carried out, the gasification of promoting working processes fluid in the 2nd position of working fluid before the separator for gas-liquid two-phase state.High temperature air is to after the working fluid of the little gaseous state of thermal capacity gives heat, and the working fluid of thermotropism gas-liquid two-phase state capacious gives delayed heat.Therefore, heat exchange can be carried out efficiently, and then, the reduction of generating efficiency can be suppressed, suppress the reduction of generated energy.

Further, after the heat exchange of the 2nd position, carry out high temperature air and wash the heat exchange of cigarette waste water, after carrying out heat exchange with this high temperature air wash cigarette waste water and heat exchange is carried out in the 3rd position that working fluid is being positioned at the 2nd position upstream side.Therefore, from burning processing system with high temperature air, wash the used heat that the such form of cigarette waste water is discharged and remain ground fully recycling, may be used for waste-heat power generation.

Again, with general example, in burning processing system, be about 300 DEG C by waste gas by the temperature of the high temperature air heated, the temperature of the high temperature air after heat exchange is carried out in the 1st position is 170 DEG C ~ about 200 DEG C.Further, the temperature of the high temperature air after heat exchange is carried out in the 2nd position is 100 DEG C ~ about 150 DEG C.Again, the temperature of washing cigarette waste water from burning processing system is 60 DEG C ~ about 70 DEG C, is 70 DEG C ~ about 73 DEG C with the temperature of washing cigarette waste water after high temperature air carries out heat exchange.

With wash cigarette waste water carry out heat exchange after the temperature of high temperature air be still the condition of high temperature of 90 DEG C ~ about 100 DEG C, make this high temperature air and the exhaust gas contact from incinerator, can prevent air from making full use of as white cigarette.Therefore, in this waste-heat power generation method, can not damage the function preventing air as white cigarette, during till prevent air from utilizing as white cigarette, high temperature air can carry out more heat exchange, realizes efficient energy recovery.

Again, rise to 70 DEG C ~ about 73 DEG C with the temperature of washing cigarette waste water after high temperature air carries out heat exchange, therefore, being used for carrying out heat exchange in the 3rd position and working fluid by this being washed cigarette waste water, energy recovery can be made efficient further.

Also can comprise: before the heat exchange of the 1st position, multiple burning processing system all be collected to the step of each high temperature air from multiple burning processing system; Before carrying out heat exchange with high temperature air, the step of respectively washing cigarette waste water from multiple burning processing system is all collected to multiple burning processing system ground.

The situation of the offal treatment of the sewage sludge of a burning processing system or rubbish etc. is not constant.Therefore, from a burning processing system high temperature air and to wash the discharge rate temperature (heat) etc. of cigarette waste water also unstable.

But, by by from multiple burning processing system each high temperature air and wash cigarette waste water and collect separately, be used further to cogeneration systems, the stabilisation of energy recovery can be realized, the large-scale production of cogeneration systems can be produced.

Such as, in (such as, 5 components parts for assembly of a machine of usual ability) burning processing system that capacity of incinerator is large, there is the boundary of maximization, and stop the risk of burning processing system when having periodic maintenance or fault.Therefore, when needing the ability of 5 components parts for assembly of a machine, do not adopt large-scale burning processing system, and the burning processing system connecting 5 usual abilities uses.

Now, for the burning processing system of the usual ability of 5, connect the cogeneration systems of 5 usual abilities respectively, need the cost of equipment of the cogeneration systems of 5 components parts for assembly of a machine, and cost uprises.Again, during burning processing system running, each cogeneration systems operates with the limit extremely close to usual ability, therefore, the metal temperature of the heat exchanger of the 1st position rises to close to limiting temperature that (temperature difference diminishes, heat exchange almost could not be carried out), consider unsatisfactory from the angle of device lifetime.

But relative to the burning processing system of 5 usual abilities, collect and connect large-scale (such as, 5 points of usual ability) cogeneration systems, first, the equipment cost of cogeneration systems is 1 point, therefore has cost advantage.And, the burning processing system of 5 is not usually all operate, the burning processing system of average about 3 is when operating, and the capacity of the heat exchanger of the 1st position of large-scale cogeneration systems can be the capacity of (not being 5 points large-scale like this) 3 points.Therefore, from this point of view, heat exchanger also has cost advantage.

Again, cogeneration systems itself is large-scale and capacity has surplus, and when the metal temperature of the heat exchanger of the 1st position rises hardly, the life-span that can contribute to heat exchanger improves.Here " multiple burning processing system is all collected " and not only comprise burning processing system entirety and exist multiple, and situation about being collected, also comprise the situation of " there is multiple incinerator in burning processing system, collected by these multiple incinerators ".Below herein, the situation that similarly, " all collecting multiple burning processing system " comprises " there is multiple incinerator in burning processing system, all collect these multiple incinerators ".

Again, in the collecting of each high temperature air, the adjustment unit (regulating valve etc.) of adjustment from the discharge rate of each burning processing system can be set in drain passageway, control these adjustment units of adjustment by computer, and this adjustment is also same for the cigarette waste water of washing from each burning processing system.

May further include: make high temperature air be not used in the 1st position but avoid step with the 1st heat exchange that the high temperature air after heat exchange is carried out in the 1st position collaborates, and make the high temperature air behind interflow be not used in the 2nd position, but avoid step with the 2nd heat exchange that the high temperature air after heat exchange is carried out in the 2nd position collaborates.

High temperature air and working fluid can be avoided as required in the heat exchange of the 1st position or the 2nd position.Therefore, can according to from burning processing system high temperature air and wash the discharge rate temperature (heat) etc. of cigarette waste water, or according to the generated energy that load-side in cogeneration systems needs, carry out or stop the heat exchange of high temperature air and working fluid.

And, avoid heat exchange because only can carry out heat exchange in the 1st position in the 2nd position, or only avoid heat exchange in the 1st position and only carry out heat exchange in the 2nd position, or, carry out heat exchange in the 1st position and the 2nd position two place, heat exchange can be selected to carry out position according to situation thus.

Such as there is following situation: larger by the heat transfer area of the heat exchanger making the 1st position, the heat transfer area of the heat exchanger of the 2nd position is less, when the heat exchanger effectiveness of the 1st position is higher than the heat exchanger effectiveness of the 2nd position, be suitable for whole high temperature airs in the 1st position, just carried out exceeding load-side heat exchange.

But, by carrying out heat exchange at the 1st heat exchange avoidance step avoidance high temperature air and working fluid in the 1st position, suitably recuperation of heat can be carried out according to generating necessary amount.Therefore, can prevent such as to produce in load side (power consumption side) what is called that the excessive generation power that exceedes necessary electric power causes not normal etc.

Certainly, whether avoid the heat exchange of high temperature air and working fluid if not only can select in the 1st position or the 2nd position, this avoidance amount can also be adjusted, the generating of appropriate amount can be carried out further as required.Such as, by avoiding outside step in the 1st and the 2nd heat exchange, (such as, flow rate regulating valve etc. carry out flow set-up procedure also to have aftermentioned the 1st and the 2nd set-up procedure like this.), the dosage to the high temperature air of each heat exchange sites and avoidance amount can be adjusted, just according to necessary generated energy, heat exchange amount (that is, the dosage of high-temperature gas) can be adjusted meticulously.

In addition, the heat transfer area of the heat exchanger of the 1st position is large, and the Adjustment effect of the generated energy (generation power) produced according to the adjustment of the dosage/avoidance amount of high temperature air is better, and the words effect that heat transfer area is little is poor.In other words, when the heat transfer area of the heat exchanger of the 1st position is less, the generated energy produced when making the dosage of high temperature air reduce (increasing avoidance amount) declines less, and consider the variation of cold side when incinerator has multiple, investment results are higher.

If utilize this character, in 1st position and the 2nd position, the heat transfer area of the heat exchanger of either party sets larger, the words that the opposing party sets less, adjusted by the dosage of the high temperature air to the large heat exchanger of heat transfer area and avoidance amount, can be accurate and carry out the adjustment of generated energy as required efficiently.This is because for the little heat exchanger of heat transfer area, even if the inflow heat that high temperature air brings changes a little, the impact for generated energy is also less.

In addition, when the heat transfer area of the heat exchanger of the 1st position is little, the degree of the change of the generated energy that the change being suitable for high temperature air amount produces is little, therefore, even if the change of high temperature air amount, also stably can guarantee the generated energy of ormal weight.Such as, when collecting high temperature air from multiple burning processing system to utilize in cogeneration systems, might not operate by whole burning processing systems, the burning processing system of part is in non-operating state sometimes all always.

Under these circumstances, the heat transfer area of the heat exchanger of the 1st position sets smaller, even if owing to partly not operating, make high temperature air amount reduce, also can do one's utmost the reduction of the generated energy suppressing to cause thus.By setting less by the heat transfer area of heat exchanger, the cost of heat exchanger can also be reduced.

Waste-heat power generation method of the present invention can also comprise: the step measuring the 1st temperature working fluid of the working fluid after heat exchange is carried out in the 1st position; Measure the step of the 1st high temperature air temperature of the high temperature air before heat exchange is carried out in the 1st position; 1st set-up procedure, based on the difference of the 1st high temperature air temperature and the 1st temperature working fluid, adjustment is applicable to the high temperature air amount of the 1st position and avoids the distribution of the high temperature air amount be suitable for the 1st position; Measure the step of the 2nd temperature working fluid of the working fluid after heat exchange is carried out in the 2nd position; Measure the step of the 2nd high temperature air temperature of the high temperature air before heat exchange is carried out in the 2nd position; 2nd set-up procedure, based on the difference of the 2nd high temperature air temperature and the 2nd temperature working fluid, adjustment is applicable to the high temperature air amount of the 2nd position and avoids the distribution of the high temperature air amount be suitable for the 2nd position.

Based on the temperature gap of the 1st temperature working fluid and the 1st high temperature air temperature, adjust and be suitable for/the distribution of inapplicable high temperature air amount to the 1st position, therefore, can be implemented in the 1st position and carry out suitable heat exchange based on temperature gap.Such as, when this temperature gap is little, even if be suitable for high temperature air in the 1st position also almost can not carry out heat exchange.In this case, preferably reduce the high temperature air amount being applicable to the 1st position, increase the high temperature air amount of avoidance the 1st position (inapplicable).

In addition, based on the temperature gap of the 2nd temperature working fluid and the 2nd high temperature air temperature, adjust and be suitable for/the distribution of inapplicable high temperature air amount to the 2nd position, therefore, can be implemented in the 2nd position and carry out suitable heat exchange based on temperature gap.Such as, when this temperature gap is little, even if be suitable for high temperature air in the 2nd position also almost can not carry out heat exchange.In this case, preferably reduce the high temperature air amount being applicable to the 2nd position, increase the high temperature air amount of avoidance the 2nd position (inapplicable).

In addition, certainly can also comprise the steps: to measure the step being about to the 1st temperature working fluid carrying out the working fluid before heat exchange in the 1st position; Measure and carry out in the 1st position the step that heat exchange previous crops is the 1st high temperature air temperature of high temperature air; Based on the difference of the 1st high temperature air temperature and the 1st temperature working fluid, adjustment be applicable to the 1st position high temperature air amount and to the 1st set-up procedure being suitable for the distribution of the high temperature air amount of avoiding in the 1st position; Measure the step being about to the 2nd temperature working fluid carrying out the working fluid before heat exchange in the 2nd position; Measure and carry out in the 2nd position the step that heat exchange previous crops is the 2nd high temperature air temperature of high temperature air; Based on the difference of the 2nd high temperature air temperature and the 2nd temperature working fluid, adjustment be applicable to the 2nd position high temperature air amount and to the 2nd set-up procedure being suitable for the distribution of the high temperature air amount of avoiding in the 2nd position.

Of the present invention other illustrative side waste-heat power generation method in comprise the steps: the step multiple burning processing system all being collected to each high temperature air, each high temperature air is that the waste gas that the multiple incinerators by having from multiple burning processing system are discharged respectively is warmed-up; By the high temperature air after collecting is applicable to the 1st position, with the 1st heat exchange steps of the heat exchange of the high temperature air and working fluid that carry out the 1st position; Using the contact procedure that the high temperature air after heat exchange is carried out in the 1st position prevents air and waste gas from contacting as white cigarette.Here the 1st position refers to: make turbine rotate to carry out in the cogeneration systems that generates electricity, the position of the upstream side of the turbine on working fluid path by working fluid.

High temperature air from burning processing system is applicable to cogeneration systems, carries out the heat exchange of high temperature air and working fluid, therefore, used heat can be utilized to generate electricity efficiently.But the situation of the offal treatment of the sewage sludge of a burning processing system or rubbish etc. is not limited to certain situation.Therefore, the high temperature air from a burning processing system can not say it is stable with the discharge rate temperature (heat) etc. of washing cigarette waste water.

But, by summarizing each high temperature air from multiple burning processing system respectively, then being applicable to cogeneration systems, the stabilisation of energy recovery can be sought as mentioned above, produce the large-scale production of cogeneration systems.Such as, by collect respectively from multiple burning processing system high temperature air and wash cigarette waste water, be applicable to a large-scale cogeneration systems, make, compared with arranging the situation of multiple cogeneration systems, the cost of this device can be reduced.In addition, the life-span of improving cogeneration systems is contributed to.

In the collecting of each high temperature air, the adjustment unit (regulating valve etc.) of adjustment from the discharge rate of each burning processing system can be set in drain passageway, control to adjust these adjustment units by computer.

In addition, the temperature of the high temperature air after carrying out heat exchange with working fluid is generally still abundant high temperature, makes this high temperature air and the exhaust gas contact from incinerator, can prevent air from utilizing fully as white cigarette.Therefore, in this waste-heat power generation method, can not damage the function preventing air as white cigarette, during till prevent air from utilizing as white cigarette, high temperature air and working fluid carry out heat exchange, realize efficient energy recovery.

1st position is when the downstream of the separator of cogeneration systems, the 2nd following heat exchange steps can also be had: by the high temperature air after the 1st heat exchange steps and before contact procedure being applicable to the 2nd position of the upstream side of the separator on working fluid path, carry out the high temperature air of the 2nd position and the heat exchange of working fluid.

Be the 1st position after the separator of gaseous state at working fluid, first carry out heat exchange, make the working fluid of gaseous state overheated.Then, be that heat exchange is carried out, the gasification of promoting working processes fluid in the 2nd position before the separator of gas-liquid two-phase state at working fluid.Remaining heat, after working fluid heat being given the little gaseous state of thermal capacity, is given the working fluid of the large gas-liquid two-phase state of thermal capacity by high temperature air.Therefore, heat exchange can be carried out efficiently, contribute to the reduction suppressing generating efficiency further, suppress the reduction of generated energy.

In order to cool the working fluid made after turbine rotation, following step can also be had: the position in the downstream of the turbine on working fluid path is suitable for the step of cooling water; Make the cooled cooling water of working fluid as the step of washing cigarette water and exhaust gas contact.

Making the cooling water of working fluid as washing cigarette water and exhaust gas contact, therefore, contributing to the water yield of saving burning processing system and the use of cogeneration systems entirety.In addition, cooling water heats up, for the words of the water supply of the smoke evacuation scrubbing tower to burning processing system after the cooling (that is, carrying out heat exchange with working fluid) of working fluid, contribute to the rising of temperature in tower, there is the effect improving and wash the temperature of cigarette waste water.

Working fluid can be any fluid in ammonia, freon or ammonia/water fluid-mixing.

The lower easy gasification of boiling point of these fluids.Therefore, by these fluids are used as working fluid, effectively can utilize the heat of lower from temperature but a large amount of used heat (low-temperature heat source) existed, the waste-heat power generation that make use of temperature difference can be realized.

The cogeneration systems of another other illustrative side of the present invention by working fluid, turbine is rotated to carry out the cogeneration systems generated electricity, it comprises following function: be applicable to the 1st position by the warmed-up high temperature air of waste gas of being discharged by the incinerator comprised from burning processing system, carry out the 1st hot-swap feature of the high temperature air of the 1st position and the heat exchange of working fluid, described 1st position is the position in the downstream at the upstream side of turbine and at separator on working fluid path; By the high temperature air after heat exchange is carried out in the 1st position is applicable to the 2nd position, carry out the 2nd hot-swap feature of the high temperature air of the 2nd position and the heat exchange of working fluid, described 2nd position is the position of the upstream side of separator on working fluid path; That has discharged from burning processing system after having washed waste gas washes cigarette waste water and the waste water hot-swap feature carrying out heat exchange at the 2nd position high temperature air carried out after heat exchange; By the cigarette waste water of washing after carrying out heat exchange with high temperature air is applicable to the 3rd position, carry out the 3rd hot-swap feature washing the heat exchange of the working fluid of cigarette waste water of the 3rd position, described 3rd position is the position of the upstream side of the 2nd position on working fluid path; Make and wash cigarette waste water and carry out the contact function that the high temperature air after heat exchange prevents air and waste gas from contacting as white cigarette.

High temperature air from burning processing system is applicable to cogeneration systems, carries out the heat exchange of high temperature air and working fluid, therefore, used heat can be utilized to generate electricity efficiently.In addition, this high temperature air in the 1st position in the downstream of the upstream side separator of turbine, the 2nd such many places, position of the upstream side of separator are applicable to cogeneration systems, therefore, the heat exchange amount with working fluid can be increased, abundant heat is given to working fluid.

Further, after heat exchange is carried out in the 2nd position, carry out high temperature air and the heat exchange of washing cigarette waste water, the heat exchange with working fluid is carried out in the 3rd position washing the upstream side of cigarette waste water in the 2nd position after carrying out heat exchange with this high temperature air.Therefore, from burning processing system with high temperature air, wash the used heat that the such form of cigarette waste water is discharged and remain ground fully recycling, may be used for waste-heat power generation.

The cogeneration systems of another other illustrative side of the present invention by working fluid, turbine is rotated to carry out the cogeneration systems generated electricity, it comprises following function: the function multiple burning processing system all being collected to each high temperature air, and each high temperature air is that the waste gas by being discharged respectively by the multiple incinerators had from multiple burning processing system is warmed-up; By the high temperature air after collecting being applicable to the 1st position of the upstream side of turbine on working fluid path, with the 1st hot-swap feature of the heat exchange of the high temperature air and working fluid that carry out the 1st position; Using the contact function that the high temperature air after heat exchange is carried out in the 1st position prevents air and waste gas from contacting as white cigarette.

High temperature air from burning processing system is applicable to cogeneration systems, and carries out the heat exchange of high temperature air and working fluid, therefore, used heat can be utilized to generate electricity efficiently.But the situation of the offal treatment of the sewage sludge of a burning processing system or rubbish etc. does not limit and certain situation.Therefore, the high temperature air from a burning processing system can not say it is stable with the discharge rate temperature (heat) etc. of washing cigarette waste water.

But, by summarizing each high temperature air from multiple burning processing system respectively, then being applicable to cogeneration systems, the stabilisation of energy recovery can be sought as mentioned above, produce the large-scale production of cogeneration systems.Such as, by collect respectively from multiple burning processing system high temperature air and wash cigarette waste water, be suitable for a large-scale cogeneration systems, make, compared with arranging the situation of multiple cogeneration systems, the cost of this device can be reduced.In addition, the life-span of improving cogeneration systems is contributed to.

In the collecting of each high temperature air, the adjustment unit (regulating valve etc.) of adjustment from the discharge rate of each burning processing system can be set in drain passageway, control these adjustment units of adjustment by computer.

Other problems of the present invention or other features can be definitely by referring to the preferred embodiment that the following drawings illustrates.

The effect of invention

According to the present invention, the thermal source of discharging from incinerator can be effectively utilized, improve its energy recovery efficiency, to carry out stable efficient generating.Such as, by the high temperature air of burning processing system that will comprise from this incinerator after many places are applicable to cogeneration systems, preventing air from utilizing as white cigarette, can realize carrying out efficient energy recovery to the heat energy gone out of use in the past, fully can reach again white cigarette and prevent function.

By collect from multiple burning processing system high temperature air and wash cigarette waste water, and be applicable to cogeneration systems, the impact of the change of the operational situation of each burning processing system can be reduced, realize stable energy recovery.In addition, by the high temperature air amount and inapplicable high temperature air amount that are applicable to cogeneration systems can be adjusted, the high temperature air amount being applicable to cogeneration systems can be changed corresponding to the change of the waste heat of burning processing system, necessary generated energy, can stablize, suitably carry out the generating of necessary amount.

Accompanying drawing explanation

Fig. 1 is the block diagram of the schematic configuration of the sewage treatment plant that the electricity generation system comprising the waste-heat power generation method realizing embodiments of the present invention is shown.

Fig. 2 is the schematic block diagram of the Inner Constitution that the treatment system shown in Fig. 1 is shown.

Fig. 3 is the schematic block diagram of the Inner Constitution that the electricity generation system shown in Fig. 1 is shown.

Fig. 4 is the pie graph of the electricity generation system of embodiments of the invention 1.

Fig. 5 is the pie graph of the electricity generation system of comparative example 1 of the present invention.

Fig. 6 is the pie graph of the electricity generation system of comparative example 2 of the present invention.

Fig. 7 is the pie graph of the electricity generation system of comparative example 3 of the present invention.

Fig. 8 is the pie graph of the electricity generation system of comparative example 4 of the present invention.

Detailed description of the invention

Below, the cogeneration systems of accompanying drawing to the waste-heat power generation method realizing embodiments of the present invention is adopted to be described.Fig. 1 illustrates that the sewage treatment plant of embodiments of the present invention is (hreinafter referred to as factory.) block diagram of schematic configuration of P.This factory P is configured to have sewage disposal system as multiple burning processing system (hreinafter referred to as treatment system.) S and electricity generation system (cogeneration systems) G.In this factory P, by from treatment system S high temperature air (white cigarette prevents air) 2 and wash cigarette waste water W for electricity generation system G.From multiple treatment system S each high temperature air 2 and respectively wash cigarette waste water W and collected for electricity generation system G respectively.

The high temperature air 2 carried out in electricity generation system G after heat exchange prevents air 2 to be sent to the smoke evacuation scrubbing tower 105 (with reference to Fig. 2) of each treatment system S as the white cigarette carrying out self-generating system G.Further, in electricity generation system G, be sent to the smoke evacuation scrubbing tower 105 of each treatment system S as a part of washing cigarette water for the cooling water C of cooling work fluid.

Fig. 2 is the schematic block diagram of the Inner Constitution that treatment system S is shown.Multiple treatment system S all has roughly the same formation, is described the formation of a treatment system S, omits the explanation of the formation to other treatment system S.This treatment system S is roughly configured to be had: incinerator 101, moving air preheater 102, white cigarette prevent air preheater 103, precipitron 104, smoke evacuation scrubbing tower 105.

In Fig. 2,101 is incinerators, is the flowing incinerator for burning sewage sludge dewatered cake in this embodiment.But incinerator 101 is not limited thereto in the present invention, it also can be incinerator.Its waste gas normally high-temp waste gas of about 800 ~ 850 DEG C.102 is the moving air preheaters being imported into this high-temp waste gas, moving air is preheating to such as 650 DEG C and reoffers to the dispersion pipe of furnace bottom.When incinerator 101 is not flowing incinerator, omit moving air preheater 102.

The back segment of moving air preheater 102 is provided with white cigarette and prevents air preheater 103.This white cigarette prevents air preheater 103 from being obtain from the heat exchanger of the water vapour the waste gas that chimney is emerged as white cigarette high temperature air (white cigarette prevents air) 2 in sight, obtaining the heated air (white cigarette prevents air) of about 300 DEG C for preventing.On the other hand, after waste gas prevents air preheater 103 by white cigarette, temperature is reduced to 250 ~ 400 DEG C, and the precipitron 104 after being directed to is to remove dust.

Here, as the typical case of high temperature air (white cigarette prevents air) 2, be commonly considered as air, certainly, also can adopt other various gases.In addition, prevent air preheater 103 from being heated by white cigarette, the gas be sent to before chimney 108 described later is called as high temperature air, be sent to chimney 108 to prevent from the gas of function to be called as white cigarette preventing air to play white cigarette, the two is in fact same gas, adopts identical quotation mark 2 to be described.

Precipitron 104 is ceramic precipitrons of good heat resistance in this embodiment, have passed white cigarette and prevents the waste gas of 250 ~ 400 DEG C of air preheater 103 can like this by control of dust.But, bag collector also can be used as precipitron 104, in this case, need at its leading portion configuration cooling tower, waste gas to be cooled to the heat resisting temperature of bag collector.In precipitron 104, the temperature of waste gas is less about reducing, and waste gas enters smoke evacuation scrubbing tower 105 below with 200 ~ 400 DEG C.

Smoke evacuation scrubbing tower 105 imports waste gas from the bottom of tower, by contacting with water (the washing Yan Shui) W that the nozzle 106 from top spills, removes the NOX in waste gas, the composition of SOX etc.As usual, in tower, water is sent to nozzle 106 to recycle by pump 107.The smoke evacuation scrubbing tower 105 of this embodiment is connected with chimney 108 on the top of tower, is discharged in tower by the waste gas washed from chimney 108.In addition, forming the column plate portion 109 of multistage at the mid portion of discharge fume scrubbing tower 105 and chimney 108, for by making the clean water provided from the top of tower contact fully with waste gas, coming to wash fully.

In this smoke evacuation scrubbing tower 105, waste gas contacts with water, therefore, the potentiality heat of the waste gas of 200 ~ 400 DEG C most transfer in water, as mentioned above, that discharges from smoke evacuation scrubbing tower 105 washes the warm water that cigarette waste water W becomes 60 ~ 70 DEG C.In the present invention, utilize the potentiality heat of the high temperature air 2 of about 300 DEG C to carry out waste-heat power generation, meanwhile, also utilize the potentiality heat of washing cigarette waste water W.

Therefore, in present embodiment, as described later, by the heat exchange (waste water heat exchange steps, waste water hot-swap feature) with high temperature air 2, the cigarette waste water W that washes discharged is heated up, reoffer to cogeneration systems G from smoke evacuation scrubbing tower 105.Its increasing extent of temperature is different according to equipment or operation method, but usually in the scope of 5 ~ 15 DEG C.With wash cigarette waste water W carry out heat exchange after high temperature air 2 remain on the temperature of 90 DEG C ~ about 100 DEG C, therefore, chimney 108 can be sent to, play the original function preventing air 2 as white cigarette.

In addition, make the words that the intensification amount of washing cigarette waste water W increases, with wash cigarette waste water W carry out heat exchange (waste water heat exchange steps, waste water hot-swap feature) after the temperature of high temperature air 2 reduce, even if be reduced to about 100 DEG C, under the weather conditions of atmospheric temperature 20 DEG C, humidity 100%, do not produce white cigarette, but the atmospheric temperature 0 DEG C in the winter time under condition, humidity 100% when, white cigarette can be produced.Just, the restriction not having method of dialogue cigarette, even winter, becoming this condition is also about a few days.In addition, like this by carrying out heat exchange with high temperature air 2 and washing the warm water that cigarette waste water W becomes 70 DEG C ~ about 73 DEG C after being warmed, cogeneration systems G is provided to.

Fig. 3 is the schematic block diagram of the Inner Constitution that electricity generation system G is shown.As electricity generation system G, preferably adopt the temperature difference electricity generation system using the such low boiling fluid of ammonia, freon or ammonia/water fluid-mixing as working fluid L.Such temperature difference electricity generation system self is known, described in the Unexamined Patent 7-91361 publication of such as Saga University application, can be the system such as utilizing the temperature difference of the Mare Frigoris water of surface seawater that temperature is higher and deep layer to carry out temperature difference generating.

As shown in Figure 3, this electricity generation system G is roughly configured to have: turbine 10, generator 11, absorber 12, condenser 13, circulating pump 14, regenerator 15, evaporimeter 16, heater 17, separator 18, superheater (steam heater) 19, pressure-reducing valve 20.In addition, this electricity generation system G also has temperature sensor 21 ~ 24, the 1st control unit 25, the 2nd control unit 26, the 1st regulating valve 27, the 2nd regulating valve 28.In addition, as shown in Figure 3, working fluid L heats cooling repeatedly while at working fluid path R Inner eycle, therefore, below from circulating pump 14, is sequentially described towards downstream (flow direction of working fluid) above-mentioned each formation.

The working fluid L of the liquid phase sent by circulating pump 14 is preheated by regenerator 15, then, is sent to evaporimeter 16.The position arranging this evaporimeter 16 is the 3rd position in working fluid path R.In this evaporimeter 16, carry out working fluid L and the heat exchange (the 3rd heat exchange steps, the 3rd hot-swap feature) of washing cigarette waste water W, the heat of carrying out washing cigarette waste water W to working fluid L shifts.As a result, working fluid L becomes the gas-liquid two-phase state that improve internal heat energy state, is sent to heater 17 below.

The position arranging this heater 17 is the 2nd position in working fluid path R.In this heater 17, carry out the heat exchange (the 2nd heat exchange steps, the 2nd hot-swap feature) of working fluid L and high temperature air 2, carry out the heat transfer of high temperature air 2 to working fluid L.As a result, working fluid L becomes the gas-liquid two-phase state that improve internal heat energy state further, is sent to separator 18.

Separator 18 is for being separated into gas phase and liquid phase by the working fluid L of gas-liquid two-phase state.The working fluid L of liquid phase part is sent to regenerator 15 again, after removed heat, is sent to absorber 12 further by pressure-reducing valve 20.On the other hand, the working fluid L of gas phase state is sent to superheater 19 from separator 18.The position arranging this superheater 19 is the 1st position in working fluid path R.In this superheater 19, carry out the heat exchange (the 1st heat exchange steps, the 1st hot-swap feature) of working fluid L and high temperature air 2, carry out the heat transfer of high temperature air 2 to working fluid L.As a result, working fluid L becomes the superheated steam further increasing internal heat energy state, is sent to turbine 10.

The working fluid L of superheated steam state makes turbine 10 rotate, and is generated electricity by the generator be connected with turbine 10.Then, the working fluid L completing power generation operation is sent to absorber 12, collaborates with the working fluid L sent here by pressure-reducing valve 20.This absorber 12 adopts such as nozzle spray formula structure, is sprayed, obtain heat cool to make it from the working fluid L of gas phase by the working fluid L (liquid phase) from pressure-reducing valve 20 to the working fluid L (gas phase) completing generating.

Then, the working fluid L being sent to condenser 13 turns back to liquid phase by cooling water C is cooled, then is sent to circulating pump 14.Like this, carrying by being recycled pump 14, by washing cigarette waste water W and high temperature air 2 is heated, making after turbine 10 rotates, to be cooled by cooling water C, with at path R Inner eycle, thus working fluid L generates electricity.Again, superheater 19 be located at be positioned at turbine 10 upstream side, separator 18 the 1st position in downstream, heater 17 is located at the 2nd position of the upstream side of separator 18, and evaporimeter 16 is located at the 3rd position of the upstream side of heater 17.

High temperature air 2 from treatment system S be collect from multiple treatment system S gas (high temperature air compilation steps, high temperature air collect function), deliver to electricity generation system G to collect all-in-one-piece state.Thus, the impact of the variation of the treatment situation of each treatment system S can be reduced, stable high temperature air 2 is provided.

By the high temperature air 2 summarized, first for the superheater 19 of the 1st position.Then, for the heater 17 of the 2nd position afterwards, the waste water heater 29 after being further used for, for the heat exchange carried out with wash cigarette waste water W (waste water heat exchange steps, waste water hot-swap feature).Then, the high temperature air 2 after waste water heat exchange steps terminates is sent to treatment system S again, for the smoke evacuation scrubbing tower 105 of each treatment system S, prevents air 2 for as white cigarette.White cigarette prevents air 2 and exhaust gas contact (contact procedure, contact function), prevents waste gas from producing white cigarette.

In electricity generation system G, path 30 avoided by the superheater be configured with for avoiding high temperature air 2 to be adapted to superheater 19 (step is avoided in the 1st heat exchange, function is avoided in the 1st heat exchange), and this path 30 is provided with the 1st regulating valve 27.1st regulating valve 27, based on the control signal from the 1st control unit 25, makes valve open or close, or makes high temperature air 2 be adapted to superheater 19, or makes high temperature air 2 import to superheater avoidance path 30 to avoid being adapted to superheater 19.

Again, the 1st control unit 25 is made up of such as computer, sequencer, relay switch etc., and the sensor receiving temperature sensor 21,22 exports, and exports based on these sensors, controls the switch of the 1st regulating valve 27.In addition, temperature sensor 21 is sensors of the temperature t1 (the 1st temperature working fluid measuring process, the 1st temperature working fluid measurement function) of the downstream surveying work fluid L of superheater 19 on working fluid path R.Again, temperature sensor 22 is that the upstream side of superheater 19 on high temperature air 2 path is for measuring the sensor of the temperature T1 (the 1st high temperature air temperature measuring step, the 1st high temperature air temperature measurement function) of high temperature air 2.

More particularly, 1st control unit 25 based on the temperature gap of the measuring tempeature T1 of the temperature sensor 22 and measuring tempeature t1 of temperature sensor 21, by the switch control rule of the 1st regulating valve 27 adjust for the high temperature air 2 of superheater 19 gas flow and avoid the distribution of gas flow of the high temperature air 2 for superheater 19.Now, control as follows: when the temperature gap (T1-t1) of temperature T1 and temperature t1 is less, open 1st regulating valve 27, as far as possible many high temperature airs 2 are made to avoid path 30 by superheater, when the temperature gap (T1-t1) of temperature T1 and temperature t1 is larger, close the 1st regulating valve 27, make as far as possible many high temperature airs 2 by superheater 19.

In electricity generation system G, path 31 avoided by the heater be configured with for avoiding high temperature air 2 to be applicable to heater 17 (step is avoided in the 2nd heat exchange, function is avoided in the 2nd heat exchange), and this path 31 arranges the 2nd regulating valve 28.2nd regulating valve 28 is based on the control signal from the 2nd control unit 26, and open or shutoff valve, makes high temperature air 2 for heater 17, or imports heater avoidance path 31 to avoid for heater 17.

2nd control unit 26 is made up of such as computer, sequencer, relay switch etc., and the sensor receiving temperature sensor 23,24 exports, and exports the switch control rule carrying out the 2nd regulating valve 28 based on these sensors.Temperature sensor 23 is sensors of the temperature t2 (the 2nd temperature working fluid measuring process, the 2nd temperature working fluid measurement function) of the working fluid L in the downstream of surveying work fluid passage R upper heater 17.Temperature sensor 24 is sensors of the temperature T2 (the 2nd high temperature air temperature measuring step, the 2nd high temperature air temperature measurement function) of the high temperature air 2 of the upstream side (and in downstream of superheater 19) measuring high temperature air 2 path upper heater 17.

More particularly, 2nd control unit 26 based on the temperature gap of the measuring tempeature T2 of the temperature sensor 24 and measuring tempeature t2 of temperature sensor 23, by the switch control rule of the 2nd regulating valve 28 adjust for the high temperature air 2 of heater 17 gas flow and avoid the distribution of gas flow of the high temperature air 2 for heater 17.Now, control as follows: when the temperature gap (T2-t2) of temperature T2 and temperature t2 is less, open 2nd regulating valve 28, as far as possible many high temperature airs 2 are made to avoid path 31 by heater, when the temperature gap (T2-t2) of temperature T2 and temperature t2 is larger, close the 2nd regulating valve 28, make as far as possible many high temperature airs 2 by heater 17.

The cigarette waste water W that washes from treatment system S collects the waste water (wash cigarette waste water compilation steps, wash cigarette waste water collect function) from multiple treatment system S, delivers to electricity generation system G to collect the state be integrated.Thus, the impact of the variation of the treatment situation of each treatment system S can be reduced, provide stable and wash cigarette waste water W.

Summarized and washed cigarette waste water W, in waste water heater 29, avoid the high temperature air after step 2 with the 2nd heat exchange steps or the 2nd heat exchange carry out heat exchange (waste water heat exchange steps, waste water hot-swap feature).Then will wash cigarette waste water W and be used for the evaporimeter 16 of the 3rd position, carry out and the heat exchange of working fluid L (the 3rd heat exchange steps, the 3rd hot-swap feature).

The water of normal temperature can be adopted as the cooling water C of low-temperature heat source.Cooling water C for condenser 13 is clean water, by supplying water to the top of the smoke evacuation scrubbing tower 105 for the treatment of system S after condenser 13, can suppress its Water usage.Cooling water C recycles as washing cigarette waste water W, therefore, can economize on water as entire system, improves environmental suitability.Again, cooling water C is also heated by condenser 13, therefore, if for supplying water to smoke evacuation scrubbing tower 105, temperature in tower can be made to increase, improve the temperature of washing cigarette waste water W.

Embodiment

[embodiment 1]

The generated energy (turbine output) of the electricity generation system G formed shown in Fig. 4 is estimated by simulation calculation.Design conditions are as follows.Again, in the present embodiment 1, each position r1 ~ r10 on the working fluid path R shown in Fig. 4, temperature T, pressure p, density index value ρ, ammonia/water ratio Y, entropy s and the enthalpy H of estimation working fluid L.Operation result is as shown in table 1.Here, density index value represents density (kg/m ³) inverse.

< design conditions >

High temperature air 2:

-flow: 9300m ³/ h

The temperature of-position g1: 300 DEG C

The temperature of-position g2: 170 DEG C

The temperature of-position g3: 150 DEG C

The temperature of-position g4: 100 DEG C

Wash cigarette waste water W:

-flow: 53m ³/ h

The temperature of-position w1: 70 DEG C

The temperature of-position w2: 60 DEG C

The temperature of-position w3: 73 DEG C

Cooling water C:

The temperature of-position c1: 20 DEG C

The temperature of-position c2: 25 DEG C

Working fluid L:

-composition: ammonia/water is than=0.95

[table 1]

[comparative example 1]

The generated energy (turbine output) of the electricity generation system G formed shown in Fig. 5 is estimated by simulation calculation.In this comparative example 1, high temperature air 2 not used for electricity generation system G, but about wash cigarette waste water W (temperature of position w1, w2), cooling water C (temperature of position c1, c2) and working fluid L design conditions all identical with embodiment 1.Again, in this comparative example 1, each position r1 ~ r10 on the working fluid path R shown in Fig. 5, estimates the temperature of working fluid L, pressure and density.Operation result is as shown in table 2.Here, density index value represents density (kg/m ³) inverse.

[table 2]

[comparative example 2]

The generated energy (turbine output) of the electricity generation system G of the formation shown in Fig. 6 is estimated by simulation calculation.Design conditions about high temperature air 2 are as follows.About wash cigarette waste water W (temperature of position w1, w2), cooling water C (temperature of position c1, c2) and working fluid L design conditions all identical with embodiment 1.Again, in this comparative example 2, each position r1 ~ r10 on the working fluid path R shown in Fig. 6, estimates the temperature of working fluid L, pressure and density.Operation result is as shown in table 3.Here, density index value represents density (kg/m ³) inverse.

< design conditions >

High temperature air 2:

-flow: 9300m ³/ h

The temperature of-position g1: 300 DEG C

The temperature of-position g2: 100 DEG C

[table 3]

[comparative example 3]

The generated energy (turbine output) of the electricity generation system G of the formation shown in Fig. 7 is estimated by simulation calculation.Design conditions about high temperature air 2 are as follows.About wash cigarette waste water W (temperature of position w1, w2), cooling water C (temperature of position c1, c2) and working fluid L design conditions all identical with embodiment 1.Again, in this comparative example 3, each position r1 ~ r10 on the working fluid path R shown in Fig. 7, estimates the temperature of working fluid L, pressure and density.Operation result is as shown in table 4.Here, density index value represents density (kg/m ³) inverse.

< design conditions >

High temperature air 2:

-flow: 9300m ³/ h

The temperature of-position g1: 300 DEG C

The temperature of-position g2: 100 DEG C

[table 4]

[comparative example 4]

The generated energy (turbine output) of the electricity generation system G of the formation shown in Fig. 8 is estimated by simulation calculation.Design conditions about high temperature air 2 are as follows.About wash cigarette waste water W (temperature of position w1, w2), cooling water C (temperature of position c1, c2) and working fluid L design conditions all identical with embodiment 1.Again, in this comparative example 4, each position r1 ~ r10 on the working fluid path R shown in Fig. 8, estimates the temperature of working fluid L, pressure and density.Operation result is as shown in table 5.Here, density index value represents density (kg/m ³) inverse.

< design conditions >

High temperature air 2:

-flow: 9300m ³/ h

The temperature of-position g1: 300 DEG C

The temperature of-position g2: 170 DEG C

The temperature of-position g3: 100 DEG C

[table 5]

As implied above, electricity generation system G according to embodiments of the invention 1 (is configured to: 1st position of high temperature air 2 for separating of device 18 downstream, the 2nd position of separator 18 upstream, with with working fluid L heat exchange, high temperature air 2 is afterwards used for wash cigarette waste water W with wash cigarette waste water W heat exchange, further, afterwards wash 3rd position of cigarette waste water W for the upstream of the 2nd position, with working fluid L heat exchange.)。Generating efficiency can be significantly improved.Its turbine exports (generated energy) and improves 181% relative to comparative example 1, improves 29%, improves 26% relative to comparative example 3, improve 0.6% relative to comparative example 4 relative to comparative example 2.

Above, the preferred embodiment of the present invention is illustrated, but the present invention is not limited thereto, can all distortion or change be carried out in the scope not departing from its aim.Such as, the waste gas potentiality heat that factory's used heat or hot spring etc. replace discharging from incinerator can be utilized, as the potentiality heat for generating electricity.

Symbol description

C: cooling water

G: electricity generation system (cogeneration systems)

L: working fluid

P: factory (sewage treatment plant)

R: working fluid path

S: treatment system (sewage disposal system, burning processing system)

W: water (wash Yan Shui, wash cigarette waste water)

2: high temperature air (white cigarette prevents air)

10: turbine

11: generator

12: absorber

13: condenser

14: circulating pump

15: regenerator

16: evaporimeter

17: heater

18: separator

19: superheater (steam heater)

20: pressure-reducing valve

21 ~ 24: temperature sensor

25: the 1 control units

26: the 2 control units

27: the 1 regulating valves

28: the 2 regulating valves

29: waste water heater

30: path avoided by superheater

31: path avoided by heater

101 incinerators

102 moving air preheaters

103 white cigarettes prevent air preheater

104 precipitrons

105 smoke evacuation scrubbing towers

106 nozzles

107 pumps

108 chimneys

109 column plate portions

Claims

1. a waste-heat power generation method, is characterized in that, comprising:

1st heat exchange steps, the warmed-up high temperature air of waste gas that incinerator by comprising from burning processing system is discharged is applicable to the 1st position, to carry out the described high temperature air of the 1st position and the heat exchange of working fluid, described 1st position refer to made by described working fluid turbine rotate with on the working fluid path carried out in the cogeneration systems that generates electricity, the upstream side of this turbine, the downstream of separator position;

2nd heat exchange steps, by the described high temperature air after heat exchange is carried out in described 1st position being applicable to the 2nd position of the upstream side of the described separator on described working fluid path, to carry out the described described high temperature air of the 2nd position and the heat exchange of described working fluid;

Waste water heat exchange steps, carries out washing the heat exchange of cigarette waste water and the described high temperature air after the heat exchange of described 2nd position, described in wash cigarette waste water and discharge from described burning processing system after having washed described waste gas;

3rd heat exchange steps, by washing the 3rd position that cigarette waste water is applicable to the upstream side of described 2nd position on described working fluid path, to carry out the heat exchange of washing cigarette waste water and described working fluid described in described 3rd position described in after carrying out heat exchange with described high temperature air; With

Contact procedure, make with described wash cigarette waste water carry out heat exchange after described high temperature air prevent air and described exhaust gas contact as white cigarette.

2. waste-heat power generation method as claimed in claim 1, is characterized in that, also comprise:

Before the heat exchange carrying out described 1st position, multiple described burning processing system is all collected to the step of the described each high temperature air from described multiple burning processing system;

Before carrying out heat exchange with described high temperature air, the described step of respectively washing cigarette waste water from described multiple burning processing system is all collected to described multiple burning processing system.

3. waste-heat power generation method as claimed in claim 1 or 2, is characterized in that, also comprise:

Step is avoided in 1st heat exchange, and described high temperature air is not collaborated with the described high temperature air after heat exchange is carried out in described 1st position with being suitable for described 1st position;

Step is avoided in 2nd heat exchange, and the high temperature air behind described interflow is not collaborated with the described high temperature air after heat exchange is carried out in described 2nd position with being suitable for described 2nd position.

4. waste-heat power generation method as claimed in claim 1 or 2, is characterized in that, also comprise:

Measure the step of the 1st temperature working fluid of the described working fluid after heat exchange is carried out in described 1st position;

Measure the step of the 1st high temperature air temperature of the described high temperature air before heat exchange is carried out in described 1st position;

1st set-up procedure, based on the difference of described 1st high temperature air temperature and described 1st temperature working fluid, adjustment is applicable to the described high temperature air amount of described 1st position and avoids the distribution of the described high temperature air amount be suitable for described 1st position;

Measure the step of the 2nd temperature working fluid of the described working fluid after heat exchange is carried out in described 2nd position;

Measure the step of the 2nd high temperature air temperature of the described high temperature air before heat exchange is carried out in described 2nd position;

2nd set-up procedure, based on the difference of described 2nd high temperature air temperature and described 2nd temperature working fluid, adjustment is applicable to the described high temperature air amount of described 2nd position and avoids the distribution of the described high temperature air amount be suitable for described 2nd position.

5. waste-heat power generation method as claimed in claim 1 or 2, is characterized in that, also comprise:

Make the postrotational described working fluid of described turbine to cool, the position in the downstream of the described turbine on described working fluid path is suitable for the step of cooling water;

Make the cooled cooling water of this working fluid as the step of washing cigarette water and described exhaust gas contact.

6. waste-heat power generation method as claimed in claim 1 or 2, is characterized in that,

Described working fluid is any fluid in ammonia, freon or ammonia/water fluid-mixing.

7. a cogeneration systems, it by working fluid, turbine is rotated to carry out the cogeneration systems generated electricity, and it is characterized in that, comprising:

1st hot-swap feature, the warmed-up high temperature air of waste gas by discharging from the incinerator included by burning processing system is applicable to the 1st position, to carry out the described high temperature air of the 1st position and the heat exchange of described working fluid, described 1st position refers to the position on described working fluid path, the upstream side of described turbine, the downstream of separator;

2nd hot-swap feature, by the described high temperature air after heat exchange is carried out in described 1st position being applicable to the 2nd position of the upstream side of the described separator on described working fluid path, to carry out the described described high temperature air of the 2nd position and the heat exchange of described working fluid;

Waste water hot-swap feature, carries out the heat exchange of washing cigarette waste water and the described high temperature air after the heat exchange of described 2nd position, described in wash cigarette waste water and discharge from described burning processing system after having washed described waste gas;

3rd hot-swap feature, by washing the 3rd position that cigarette waste water is applicable to the upstream side of described 2nd position on described working fluid path described in after having carried out heat exchange with described high temperature air, carry out the heat exchange of washing cigarette waste water and described working fluid described in described 3rd position;

Contact function, make with described wash cigarette waste water carry out heat exchange after described high temperature air prevent air and described exhaust gas contact as white cigarette.