Intermediate temperature zone cross circulation combined waste heat total recovery and zero emission system of sintering circular cooler

Abstract

The invention belongs to the technical field of energy conservation and emission reduction of sintering circular coolers, and particularly relates to a sintering circular cooler medium-temperature area cross circulation combined waste heat total recovery and zero emission system which comprises a circular cooler, a circular cooling air blower, a waste heat boiler, a circulating fan, a steam turbine generator unit, a condenser and a condensate pump. The waste heat boiler is formed by combining two sets of waste heat boilers, one set of waste heat boiler is a first-section and second-section waste heat boiler, flue gas is taken from a first section and a second section, and exhaust air at the bottom of the first-section and second-section waste heat boiler returns to the first section and the second section through a circulating fan; the other set of waste heat boiler is an overhead three-section waste heat boiler, flue gas of the three-section waste heat boiler is taken from a third section, exhaust air of the three-section waste heat boiler returns to a fourth section, and flue gas of the fourth section returns to the third section; the two waste heat boilers are communicated with a steam supplementing opening of the steam turbine generator unit. The system has the advantages that a new waste heat utilization steam and hot water circulation system is constructed by utilizing the steam supplementing and condensing type steam turbine, and zero emission is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy saving and emission reduction of ring cooling machine, and particularly relates to a sintering ring cooling machine medium temperature zone cross circulation combined waste heat full recovery and zero emission system. BACKGROUND

[0002] The sintering ring cooling machine is a sintering ring cooling machine, which is used for effectively cooling hot sintered ore unloaded from a sintering machine. The sintering ring cooling machine is composed of a transmission device, a rack assembly, a rotary body assembly, a sealing device, a feeding hopper, a discharging hopper, a discharging air hood, a discharging curved rail assembly, a horizontal rail device, a side rail device, a supporting roller device, an air bellow assembly and a cover assembly. After the sintered cake unloaded from the sintering machine is crushed by a single-tooth roller, the sintered cake is fed into the feeding hopper and uniformly distributed on the rotary trolley through the feeding chute. The rotary trolley is driven by the friction wheel of the driving device, and the air blower sends cold air into the air bellow under the trolley. The cold air enters the hot sintered ore and exchanges heat with the hot sintered ore, and the hot sintered ore is gradually cooled. When the trolley returns to the discharging area, the wheel starts to descend along the curved rail, and the cooled hot sintered ore is discharged to the discharging chute, and the cold sintered ore is sent to the finished product belt conveyor by the plate feeder arranged under the discharging chute. After the trolley is discharged, the trolley rises along the curved rail to reset and performs the feeding process of the next cycle. The cooling zone of the general sintering ring cooling machine is divided into five sections, and the high-temperature sintered cake enters from the first section to the fifth section, and the temperature gradually decreases from high to low. The existing sintering ring cooling waste heat utilization status is that most of the waste heat utilization is only in one or two sections, and the highest power generation index is 21 kWh / t. There are also a few waste heat utilization in one, two and three sections, and the highest power generation index is 24 kWh / t.

[0003] The Chinese utility model patent with the application number 202121918362.0 discloses a sintering ring cooler full-ring cooling waste heat recovery and waste gas zero emission system, which comprises a sintering ring cooler flue gas system, a high-temperature zone waste heat recovery system, a medium-temperature zone waste heat recovery system, and a low-temperature zone waste heat recovery zero emission system. The sintering ring cooler flue gas system comprises a high-temperature zone flue gas system and a medium-temperature zone flue gas system. The high-temperature zone flue gas system guides the high-temperature zone flue gas of the sintering ring cooler into the high-temperature zone waste heat recovery system for waste heat recovery, and sends the high-temperature zone backflow flue gas after heat exchange back to the high-temperature zone of the sintering ring cooler. The low-temperature zone flue gas system guides the low-temperature zone flue gas of the sintering ring cooler into the low-temperature zone waste heat recovery system for waste heat recovery, and sends the low-temperature zone backflow flue gas after heat exchange back to the low-temperature zone of the sintering ring cooler. The scheme realizes waste heat recovery of two sections (first and second sections) and three to five sections by two sets of waste heat recovery boilers, and is matched with a common single-steam-in condensing steam turbine, which has low power generation efficiency. The boiler body does not have a hot water heat exchanger, the five-section flue gas is connected in parallel with the boiler and directly returns to the third section of the lower part of the ring cooler, the correct position is not given, and the air volume is unbalanced. The ring cooler five-section return air is not given, and only the lower part of the ring cooler after the heat exchanger is indicated in the figure, the five-section air inlet uses hot air, and the cooling of the mineral material cannot be guaranteed. At the same time, the biggest problem of the system is that there is no theoretical basis for the design of the scheme, only the system process is given, and how to determine the flue gas air volume and air temperature in the system process to maintain heat balance, how to select the steam parameters to be efficient, and how to guarantee the final mineral material cooling of the ring cooler to meet the standard are not expressed, and the system is not suitable for all sintering ring cooling systems with different production capacities and mineral material temperatures, and the applicable production capacity and mineral material temperature conditions are not given. The purpose of the patent is to solve the problem that the scheme has no theoretical support in the actual engineering of the existing sintering ring cooler waste heat utilization project, the selection of the waste heat boiler inlet air volume and temperature and the selection of the waste heat utilization circulating fan are all copied, and the waste heat recovery rate and waste gas emission are not rigorous to achieve the expected effect.

[0004] In the actual engineering of the existing sintering ring cooler waste heat utilization project, the scheme basically has no theoretical support, and the selection of the ring cooler blower is all copied. In terms of waste heat recovery rate and waste gas emission, the examination and acceptance is not rigorous, and the production cost of the enterprise is high. Therefore, it is necessary to redesign the sintering ring cooler waste heat recovery system to ensure that the waste heat recovery, mineral material cooling, and income indicators after the implementation of the project meet the expected effect. SUMMARY

[0005] The purpose of the present application is to provide a sintering ring cooler medium-temperature zone cross-circulation combined waste heat full recovery and zero emission system, which overcomes the shortcomings of the prior art and realizes the ultimate goal of waste heat full recovery and waste gas zero emission. Starting from the mineral material system and the combined waste heat boiler, a new waste heat utilization steam and hot water circulation system is built by using a supplementary condensing steam turbine to ensure that the waste heat recovery, mineral material cooling, and income indicators after the implementation of the project meet the expected effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A sintering annular cooler mid-temperature zone cross-circulation combined waste heat recovery and zero emission system includes an annular cooler, an annular cooler blower, a waste heat boiler, a circulating fan, a steam turbine generator set, a condenser, and a condensate pump. The annular cooler is divided into five sections, with an annular cooler blower installed in each section. A fume hood is installed on the annular cooler, and the top of the fume hood is connected to the waste heat boiler via a duct. The steam outlet of the waste heat boiler is connected to the steam turbine generator set. The condensate from the steam turbine generator set is collected in the condenser and returned to the waste heat boiler via the condensate pump. Two waste heat boilers are used in combination; one waste heat boiler consists of two sections, with flue gas taken from the first and second sections. The exhaust air from the bottom of the boiler returns to the first and second sections via a circulating fan; the other waste heat boiler is a top-mounted three-stage waste heat boiler, with flue gas taken from the third section, and the exhaust air from the third section returning to the fourth section, while the flue gas from the fourth section returns to the third section; the steam turbine generator set is a supplementary steam condensing steam turbine generator set, and the low-parameter superheaters of the two waste heat boilers are connected to the supplementary steam inlet of the supplementary steam condensing steam turbine generator set. The high-parameter evaporators of the three-stage waste heat boiler are connected in series with the high-parameter superheaters of the first and second stage waste heat boilers, and the outlets of the high-parameter superheaters of the first and second stage waste heat boilers are connected to the main steam inlet of the supplementary steam condensing steam turbine generator set.

[0007] The fume hood is a partition hood, and the five sections are separated into five relatively isolated spaces. Each section is equipped with a partition valve at the bottom connecting pipe to prevent air leakage between the sections.

[0008] The first and second stage waste heat boilers are dual-pressure boilers, and the third stage waste heat boiler is an upper-mounted dual-pressure boiler or an upper-mounted triple-pressure boiler.

[0009] The low-parameter steam and hot water heat exchangers in the dual-pressure or triple-pressure boilers supply heat to the external pipe network; the medium-parameter steam output in the triple-pressure boiler supplies heat to the external pipe network.

[0010] The partition cover structure includes a top cover, partition plates, and a movable plate. The lower surface of the top cover is sealed to the upper ends of the two partition plates respectively. The lower ends of the partition plates are connected to the upper ends of the movable plate by hinges. The lower end of the movable plate overlaps the surface of the ore on the annular cooler. The top cover, partition plates, movable plate, and ore form a relatively sealed space.

[0011] The sintering machine of the system has a utilization coefficient of <1.35, the feed temperature of the annular cooler is higher than 750 > t > 600℃, the flue gas temperature of the first stage of the annular cooler is ≥380℃, and the flue gas temperature of the third stage of the annular cooler is ≥250℃.

[0012] The steam of the one-two stage waste heat boiler is: high parameter steam pressure 1.7±0.2MPa, steam temperature 360±20℃; low parameter steam pressure 0.45±0.2MPa, steam temperature 200±20℃; the three-stage waste heat boiler is: high parameter steam pressure 1.8MPa saturated steam; low parameter steam pressure 0.45±0.2MPa, steam temperature 200±20℃.

[0013] Compared with the prior art, the beneficial effects of the present application are: 1) The present application takes the ultimate goal of full waste heat recovery and zero emission of waste gas, starts from the combination of the mineral material system and the waste heat boiler of the heat source, uses the make-up steam condensing steam turbine to build a new waste heat utilization steam and hot water circulation system, carries out waste heat utilization, ensures the waste heat recovery, mineral material cooling and income index after the implementation of the project to achieve the expected effect, and realizes zero emission of waste gas of the circular cooler at the same time; 2) The present application scheme is full waste heat recovery of the circular cooler, the first, second, third and fourth sections of waste heat can be used for waste heat power generation, the power generation index is 26kWh / t-30kWh / t, and the hot water of the third, fourth and fifth sections is also increased, which far exceeds the existing waste heat utilization index, and the hot water recovered by the waste heat can be used for sintering process mixture heating, winter heating, seawater desalination and other processes; 3) The present application is suitable for new and reconstructed projects, the new project should refer to the operation data of the existing project, the reconstructed project should combine the operation data before the reconstruction, and the process flow after the system optimization can better realize the multi-level cascade utilization of energy, solve the balance between the change of sintering mineral type and the fluctuation of sintering processing capacity and the waste heat recovery and flue gas treatment system, and realize the true meaning of "full waste heat recovery and zero emission of the circular cooler". BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a process flow schematic diagram of the embodiment 1 of the present application; Figure 2 It is a process flow schematic diagram of the embodiment 2 of the present application; Figure 3 It is a structure schematic diagram of the partition cover in the embodiment 1-2 of the present application; Figure 4The figure is a schematic diagram of the air balance design between the ring cooling machine, the waste heat boiler and the steam turbine generator unit in the embodiment 1-2 of the present application; in the figure: 1-first stage of the ring cooling machine, 2-second stage of the ring cooling machine, 3-third stage of the ring cooling machine, 4-fourth stage of the ring cooling machine, 5-fifth stage of the ring cooling machine, 6-separation cover, 7-1# ring cooling blower, 8-2# ring cooling blower, 9-3# ring cooling blower, 10-4# ring cooling blower, 11-5# ring cooling blower, 12-first waste heat boiler, 13-second waste heat boiler, 14-supplement steam condensing steam turbine generator unit, 15-condenser, 16-condensate pump, 17-heat exchanger, 18-top cover, 19-spacer, 20-movable plate, 21-flap, 22-circulating fan, 24-separation valve. DETAILED DESCRIPTION

[0015] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments.

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0017] The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0018] See Figure 1, is a sintering ring cooling machine in the medium temperature zone cross circulation combined waste heat full recovery and zero emission system embodiment 1 process flow diagram, in the conventional ring cooling machine system including ring cooling machine, ring cooling fan, waste heat boiler, steam turbine generator unit, condenser 15 and condensate pump 16, the ring cooling machine is five sections, namely ring cooling machine section 1, ring cooling machine section 2, ring cooling machine section 3, ring cooling machine section 4, ring cooling machine section 5, each section is provided with a ring cooling fan, i.e. 1# ring cooling fan 7, 2# ring cooling fan 8, 3# ring cooling fan 9, 4# ring cooling fan 10, 5# ring cooling fan 11, the ring cooling machine is provided with a hood, the hood top is connected with the waste heat boiler through the air pipe, the waste heat boiler outlet is connected with the steam turbine generator unit, the steam turbine generator unit is a steam condensing steam turbine generator unit 14, the condensate of the steam turbine generator unit enters the condenser and returns to the waste heat boiler through the condensate pump, the hood is a partition cover 6, five sections form five relatively isolated spaces through the partition cover, and the bottom of each section is provided with a partition valve 24 to prevent air leakage between sections.

[0019] The sintering machine system of the present application has a utilization coefficient of less than 1.35, the ring cooling machine has a high inlet temperature of 750> t> 600 ℃, the ring cooling first section has a flue gas temperature of 380 ℃ or higher, and the ring cooling third section has a flue gas temperature of 250 ℃ or higher. The waste heat boiler is composed of two sets of waste heat boilers, wherein the first waste heat boiler 12 is a double-pressure boiler, and the second waste heat boiler 13 is an upper-mounted double-pressure boiler. The first waste heat boiler 12 is a two-section waste heat boiler, and the flue gas is taken from the first and second sections. The bottom exhaust air of the two-section waste heat boiler returns to the first and second sections through a circulating fan 22. The second waste heat boiler 13 is an upper-mounted three-section waste heat boiler, and the flue gas of the three-section waste heat boiler is taken from the third section. The exhaust air of the three-section waste heat boiler returns to the fourth section, and the flue gas of the fourth section returns to the third section, forming a cross circulation of medium temperature zone flue gas. The steam turbine generator unit is a steam condensing steam turbine generator unit 14. The low-parameter superheater of the two sets of waste heat boilers is connected with the steam inlet of the steam condensing steam turbine generator unit 14. The high-parameter evaporator of the second waste heat boiler 13 is connected in series with the high-parameter superheater of the two-section waste heat boiler, and the outlet of the high-parameter superheater of the first waste heat boiler 12 is connected with the main steam inlet of the steam condensing steam turbine generator unit, so that the energy can be utilized in stages. The system can generate more than 26 kWh / t of ore, and the ring cooling machine has an ore temperature of 120 ℃ or lower.

[0020] See Figure 2As the process flow diagram of the embodiment 2 of the present application, the first waste heat boiler 12 in the two sets of waste heat boilers is a double-pressure boiler, and the second waste heat boiler 13 is an upper three-pressure boiler. The low-parameter steam and hot water exchanger in the double-pressure boiler and the three-pressure boiler output heat for external pipe network. The medium-parameter steam in the three-pressure boiler outputs heat for external pipe network. The high-parameter steam of the double-pressure waste heat boiler ensures the power generation efficiency, the low-parameter steam ensures the heat extraction amount and reduces the exhaust gas temperature, and the air return of the ring cooler ensures the cooling of the mineral material of the ring cooler. The high-parameter steam pressure is too high to reduce the evaporation amount, and the pressure is too low to reduce the power generation efficiency of the steam turbine. The steam temperature is set according to the upper limit of the flue gas temperature. If the steam temperature is set too high, the steam temperature cannot reach a reasonable temperature under low load conditions, and if the steam temperature is set too low, the power generation efficiency of the waste heat utilization is reduced. The steam values of the first and second waste heat boilers are as follows: the high-parameter steam pressure is 1.7±0.2 MPa, and the steam temperature is 360±20℃; the low-parameter steam pressure is 0.45±0.2 MPa, and the steam temperature is 200±20℃; and the values of the third waste heat boiler are as follows: the high-parameter steam pressure is 1.8 MPa saturated steam; and the low-parameter steam pressure is 0.45±0.2 MPa, and the steam temperature is 200±20℃.

[0021] See Figure 3 The structure of the partition cover 6 comprises a top cover 18, a partition plate 19 and a movable plate 20. The lower surface of the top cover is in close connection with the upper ends of the two partition plates 19 respectively. The lower end of the partition plate 19 is connected with the upper end of the movable plate 20 through a folding page 21. The lower end of the movable plate 20 is overlapped on the surface of the mineral material on the ring cooler. A relatively closed space is formed among the top cover 18, the partition plate 19, the movable plate 20 and the mineral material, which effectively prevents the air from being mixed among the sections and causes heat loss.

[0022] See Figure 4 The application system can calculate the total mineral material amount processed by the ring cooler according to the sintering machine area, the sintering machine utilization coefficient and the total sintering machine return coefficient. The reasonable cooling air amount of each section is calculated according to the mineral material amount and the temperature of the ring cooler, so as to meet the cooling requirement. The proportion of the hot water and the steam is calculated according to the flue gas amount and the flue gas temperature of each section, so as to balance the flue gas waste heat amount and the heat of the steam and the hot water. The specific calculation formula is as follows: The calculation formula of the total mineral material amount processed by the ring cooler is as follows: M=F× 1× 2 (Formula 1) In the formula, M is the total mineral material amount, unit t / h; F is the sintering machine area m 2 ; 1 is the utilization coefficient of the sintering machine, 2 is the total sintering return coefficient.

[0023] According to the ring cooler into the material temperature T, sintering waste heat to different mineral composition and fuel composition, the new project to refer to the existing project operation data, the transformation project to combine the operation data before the transformation to determine the ring cooler into the ore temperature. With the amount and temperature of the mineral material of the sintering waste heat source, the heat of the heat source can be calculated. Combined with the output and temperature of the heat source mineral material, the scheme of waste heat extraction is designed.

[0024] The cooling air volume calculation formula is: Q=CxmAt (formula 2); Wherein C1xm1At1=C2xm2At2 (formula 3); In the formula: C1 is the specific heat of mineral material; m1 is the mass of mineral material; At1 is the temperature difference of mineral material; C2 is the specific heat of flue gas; M2 is the flue gas flow; At2 is the temperature difference of flue gas.

[0025] According to the amount and temperature of the ring cooler mineral material of the heat source, the flue gas and air volume and temperature of each section of the ring cooler are determined to make the heat balance, and the flue gas is used as the intermediate carrier of the waste heat utilization. The values of flue gas volume and temperature are crucial and are important guarantees for mineral material cooling and waste heat output. The flue gas volume and temperature are related parameters, and the actual air temperature is selected to ensure the normal heat exchange.

[0026] The heat balance calculation formula of steam and hot water is: Q=CxmAt (formula 4); Wherein C2xm2At2=C3xm3At3 (formula 5); In the formula: C2 is the specific heat of flue gas; M2 is the mass of flue gas; At2 is the temperature difference of flue gas; C3 is the specific heat of hot water; M3 is the flow of hot water; At3 is the temperature difference of hot water.

[0027] According to the heat balance of flue gas waste heat, steam and hot water, the reasonable value of steam parameters is crucial to the efficiency of sintering waste heat power generation. At the same time, if there is hot water for heat in the tail of the waste heat boiler of the low temperature section of the ring cooler, the exhaust gas temperature of the boiler tail can be reduced, which is very beneficial to waste heat extraction and mineral material cooling of the ring cooler. According to the flue gas volume and temperature of each section, the heat is transferred to hot water and steam through the waste heat boiler to make the heat balance, and the output of steam and hot water is calculated.

[0028] In the embodiment, the zero emission of the end of the circular cooler (the fifth section) is the last guarantee of the cooling of the ore. The balance of the ore heat, the flue gas heat, the hot water heat, and the smoke air volume calculates the final flue gas volume and the flue gas temperature, the flue gas is sent to the sintering hot air ignition, the flue gas circulation, the whole recovery of the circular cooling waste heat is used as the guarantee of the last flue gas which can be sent to the sintering machine tail dust remover, the guarantee of the cooling of the ore and the non-external emission of the circular cooler. The highest point of the smoke air temperature of the fifth section is < 160℃, the heat exchanger absorbs the low temperature waste heat for the heat utilization design, the flue gas temperature is controlled according to the need, and the flue gas is directly sent to the sintering flue gas circulation system to recover the heat.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sintering annular cooler mid-temperature zone cross-circulation combined waste heat recovery and zero emission system, comprising an annular cooler, an annular cooler blower, a waste heat boiler, a circulating fan, a steam turbine generator set, a condenser, and a condensate pump, wherein the annular cooler is divided into five sections, each section having an annular cooler blower, the annular cooler being equipped with a fume hood, the top of the fume hood being connected to the waste heat boiler via a duct, the steam outlet of the waste heat boiler being connected to the steam turbine generator set, and the condensate from the steam turbine generator set entering the condenser for collection and being returned to the waste heat boiler via the condensate pump, characterized in that... The waste heat boiler is a combination of two sets of waste heat boilers. One set is a first- and second-stage waste heat boiler, with flue gas taken from the first and second stages. The exhaust air from the bottom of the first- and second-stage waste heat boiler is returned to the first and second stages via a circulating fan. The other set of waste heat boiler is a top-mounted three-stage waste heat boiler, with flue gas taken from the third stage. The exhaust air from the third-stage waste heat boiler is returned to the fourth stage, and the flue gas from the fourth stage is returned to the third stage. The steam turbine generator set is a supplementary steam condensing steam turbine generator set. The low-parameter superheaters of the two sets of waste heat boilers are connected to the supplementary steam inlet of the supplementary steam condensing steam turbine generator set. The high-parameter evaporator of the three-stage waste heat boiler is connected in series with the high-parameter superheaters of the first- and second-stage waste heat boilers. The outlet of the high-parameter superheaters of the first- and second-stage waste heat boilers is connected to the main steam inlet of the supplementary steam condensing steam turbine generator set.

2. The sintering ring cooler intermediate temperature zone cross-circulation combined waste heat recovery and zero emission system according to claim 1, characterized in that, The fume hood is a partition hood, and the five sections are separated into five relatively isolated spaces. Each section is equipped with a partition valve at the bottom connecting pipe to prevent air leakage between the sections.

3. The sintering ring cooler intermediate temperature zone cross-circulation combined waste heat recovery and zero emission system according to claim 1, characterized in that, The first and second stage waste heat boilers are dual-pressure boilers, and the third stage waste heat boiler is an upper-mounted dual-pressure boiler or an upper-mounted triple-pressure boiler.

4. The sintering ring cooler intermediate temperature zone cross-circulation combined waste heat recovery and zero emission system according to claim 3, characterized in that, The low-parameter steam and hot water heat exchangers in the dual-pressure or triple-pressure boilers supply heat to the external pipe network; the medium-parameter steam output in the triple-pressure boiler supplies heat to the external pipe network.

5. The sintering ring cooler intermediate temperature zone cross-circulation combined waste heat recovery and zero emission system according to claim 2, characterized in that, The partition cover structure includes a top cover, partition plates, and a movable plate. The lower surface of the top cover is sealed to the upper ends of the two partition plates respectively. The lower ends of the partition plates are connected to the upper ends of the movable plate by hinges. The lower end of the movable plate overlaps the surface of the ore on the annular cooler. The top cover, partition plates, movable plate, and ore form a relatively sealed space.

6. The sintering ring cooler intermediate temperature zone cross-circulation combined waste heat recovery and zero emission system according to claim 1, characterized in that, The sintering machine of the system has a utilization coefficient of <1.35, the feed temperature of the annular cooler is higher than 750 > t > 600℃, the flue gas temperature of the first stage of the annular cooler is ≥380℃, and the flue gas temperature of the third stage of the annular cooler is ≥250℃.

7. The sintering ring cooler intermediate temperature zone cross-circulation combined waste heat recovery and zero emission system according to claim 1, characterized in that, The steam parameters for the first and second stage waste heat boilers are as follows: high parameter steam pressure 1.7±0.2MPa, steam temperature 360±20℃; low parameter steam pressure 0.45±0.2MPa, steam temperature 200±20℃. The parameters for the third stage waste heat boiler are as follows: high parameter steam pressure 1.8MPa saturated steam; low parameter steam pressure 0.45±0.2MPa, steam temperature 200±20℃.

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