System for regulating overheat utilization superheated steam temperature of riser

Abstract

The application discloses a system for regulating superheated steam temperature of waste heat utilization of a riser, comprising a desalted water tank, a deaerator pump, a deaerator, a steam drum feed pump, a steam drum, a forced circulation pump, a riser heat exchanger group, a dual-purpose heat exchanger group, a distribution cylinder, a first riser superheater group, a second riser superheater group, a flow regulating valve, a temperature regulating valve, a flow meter and a thermometer; the desalted water tank, the deaerator pump, the deaerator, the feed pump, the steam drum and the circulation pump are sequentially communicated; the riser heat exchanger group is communicated with the circulation pump and the steam drum; the steam drum is communicated with the distribution cylinder; one way of the distribution cylinder outlet is communicated with the first and second riser superheater groups, and the other way is communicated with the dual-purpose heat exchanger group inlet; the dual-purpose heat exchanger group inlet is communicated with the circulation pump, and the outlet is respectively communicated with the riser heat exchanger group outlet and the second riser superheater group inlet; the temperature regulating valve is arranged at the dual-purpose heat exchanger group inlet; the flow regulating valve and the flow meter are interlocked arranged; and the temperature regulating valve and the thermometer are interlocked arranged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste heat recovery system, and particularly relates to a system for regulating and controlling overheat steam temperature of riser waste heat utilization. BACKGROUND

[0002] The raw gas entering the riser heat exchanger from the coking chamber of the coke oven is about 800 DEG C, and the traditional ammonia water spraying method is generally used for cooling, which causes a large amount of waste heat resources to be unable to be utilized. With the development of waste heat recovery technology, at present, many enterprises adopt the riser heat exchange device to recover heat, produce low-pressure and medium-pressure saturated steam, and recover the sensible heat of the raw gas. However, due to the narrow application range of the saturated steam and the problem that the saturated steam is easily condensed into water when it meets cold, in order to expand the application range of the steam, the saturated steam is often further heated into superheated steam by using the riser superheater for secondary heat exchange. For example, the patent number ZL201420147327.7 discloses a coke oven riser raw gas sensible heat recovery system, which comprises a heat exchange forced circulation system, a water supply system, a superheated steam circulation system, the superheated steam circulation system comprises a superheated steam heat exchanger group, one of the steam outlets of the heat exchange forced circulation system is connected with an external saturated steam pipe network, the other is connected with the inlet of the superheated steam heat exchanger group through a recirculation steam pipe, and the outlet of the superheated steam heat exchanger group is connected with an external superheated steam pipe network; the water supply system comprises a buffer tank, a deaerated water pump, a deaerator, a deaerated water tank and a feed water pump, the deaerated water pump is arranged between the buffer tank and the deaerator, and the deaerated water tank is connected with a saturated steam drum through the feed water pump. The patent application can effectively, safely and reliably recover the waste heat of the raw gas, and convert the heat exchange medium into medium-pressure and low-pressure steam in a cycle. With the popularization and use of the riser waste heat recovery system, the generated steam is used in a rich oil heating system to replace the original coke oven gas pipe furnace. In addition to providing a certain amount and temperature of saturated steam, the replaced pipe furnace must also provide 2-3 tons / hour of superheated steam with a pressure of 0.3-0.6 MPa and a temperature of 400 DEG C or above at the crude benzene site. In order to obtain suitable superheated steam, the general method of the waste heat recovery system is to replace a certain amount of riser heat exchanger with a riser superheater, and to pass in the self-produced saturated steam, so that the saturated steam is heated again by the high-temperature raw gas to obtain the superheated steam. However, due to the influence of the coking period on the flow and temperature of the raw gas, the temperature of the superheated steam fluctuates greatly, and it is generally difficult to meet the working condition requirements. Figure 1 As shown in the figure, the flow regulating valve and the flow meter are interlocked to control the flow, and there is no control means for the superheated temperature.

[0003] In order to solve the influence of the overheat temperature fluctuation on the crude benzene working condition, the conventional method is to use an electric heater to supplement heating, so that the steam is heated to the required stable temperature. The method is guaranteed at low temperature, but the overheat temperature is still uncontrollable, the overheat temperature is too high, not only a large amount of heat energy is wasted, but also the damage to the riser superheater is too large, the material, pipeline and valve in the riser superheater are difficult to withstand the continuous high temperature, the damage frequency is increased, and the cost is not worth the loss. At the same time, the electric heater consumes a large amount of electric energy, which does not meet the national energy policy, and the damage and maintenance of the electric heater also affect the working condition. SUMMARY

[0004] The present application aims at the problems existing in the prior art waste heat recovery system, and provides a system for regulating and controlling the overheat steam temperature of riser waste heat utilization.

[0005] The present application is realized by the following technical scheme:

[0006] A system for regulating and controlling the overheat steam temperature of riser waste heat utilization, characterized in that the system comprises a desalted water tank, a deaerator pump, a deaerator, a steam drum feed water pump, a steam drum, a forced circulation pump, a riser heat exchanger group, a dual-purpose heat exchanger group, a steam cylinder, a first riser superheater group, a second riser superheater group, a flow regulating valve, a temperature regulating valve, a flow meter and a remote thermometer; the desalted water tank, the deaerator pump, the deaerator, the steam drum feed water pump and the steam drum are sequentially connected; the riser heat exchanger group is connected with the forced circulation pump and the steam drum at two ends; the steam drum is connected with the steam cylinder, and the outlet of the steam cylinder is divided into two paths: one path is sequentially connected with the first riser superheater group and the second riser superheater group, and the other path is connected with the inlet of the dual-purpose heat exchanger group; the inlet of the dual-purpose heat exchanger group is connected with the forced circulation pump, and the outlet is divided into two paths: one path is connected with the outlet of the riser heat exchanger group, and the other path is connected with the inlet of the second riser superheater group; the flow regulating valve is arranged at the outlet of the steam cylinder and used for regulating the flow of the two paths of the outlet of the steam cylinder; the temperature regulating valve is arranged at the inlet of the dual-purpose heat exchanger group; the flow meter and the remote thermometer are sequentially arranged at the outlet of the second riser superheater group; the flow regulating valve is interlocked with the flow meter; and the temperature regulating valve is interlocked with the remote thermometer.

[0007] The dual-purpose heat exchanger group in the present application adopts a superheater configuration, which is lower inlet and upper outlet, and the connected pipelines and valves are all configured according to the superheater pipeline

[0008] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein a first regulating valve is arranged between the deaerator pump and the deaerator.

[0009] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein two deaerator pumps are arranged.

[0010] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein a second regulating valve is arranged between the feed water pump and the steam drum.

[0011] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein three feed water pumps are arranged, two of which are used as a backup.

[0012] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein the steam drum, the forced circulation pump, and the riser heat exchanger group are arranged in two groups.

[0013] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein two circulation pumps are arranged in each group of forced circulation pumps, one of which is used as a backup; 3-10 riser superheaters are arranged in the first riser superheater group; and 3-10 riser superheaters are arranged in the second riser superheater group. The number of riser superheaters in a specific riser superheater group can be adjusted as needed.

[0014] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein a first isolation valve is arranged between the forced circulation pump and the dual-purpose heat exchanger group; and a second isolation valve is arranged between the dual-purpose heat exchanger group and the riser heat exchanger group.

[0015] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein a third isolation valve is arranged between the steam cylinder and the dual-purpose heat exchanger group. Specifically, the third isolation valve is arranged downstream of the flow regulating valve.

[0016] Further, a system for regulating the temperature of superheated steam in the riser waste heat utilization system, wherein a communication pipeline is arranged between the deaerator and the steam cylinder, and a third regulating valve is arranged on the pipeline.

[0017] The system for regulating the superheated steam temperature of the waste heat utilization of the riser pipe of the present application comprises a double-purpose heat exchanger group arranged near the riser heat exchanger group, an inlet of the double-purpose heat exchanger group is communicated with the outlet of the forced circulation pump, and an outlet of the double-purpose heat exchanger group is communicated with the outlet of the riser heat exchanger group; a temperature regulating valve is arranged at the inlet of the double-purpose heat exchanger group, the temperature regulating valve is interlocked with the remote superheat thermometer after the second riser superheater group, and the superheat temperature is controlled by regulating the water inflow.

[0018] The present application has the following advantages:

[0019] (1) The system for regulating the superheated steam temperature of the waste heat utilization of the riser pipe of the present application comprises a double-purpose heat exchanger group arranged near the riser heat exchanger group, an inlet of the double-purpose heat exchanger group is communicated with the outlet of the forced circulation pump, and an outlet of the double-purpose heat exchanger group is communicated with the outlet of the riser heat exchanger group; a temperature regulating valve is arranged at the inlet of the double-purpose heat exchanger group, the temperature regulating valve is interlocked with the remote superheat thermometer after the second riser superheater group, and the superheat temperature is controlled by regulating the water inflow.

[0020] (2) The system for regulating the superheated steam temperature of the waste heat utilization of the riser pipe of the present application comprises a temperature regulating valve arranged at the water inflow pipe of the double-purpose heat exchanger group, the temperature regulating valve is interlocked with the remote thermometer, and is used for regulating the superheat temperature. The double-purpose heat exchanger group is usually used for superheating the saturated steam, when the superheat temperature of the outlet of the secondary superheating pipe (i.e. the second riser superheater group) exceeds the set value, the temperature regulating valve is opened, because the water pressure after the forced circulation pump is greater than the steam pressure, the water can enter the double-purpose heat exchanger group at the same time, the water absorbs heat in the process of vaporization, and the steam temperature of the outlet of the double-purpose heat exchanger group is reduced, and finally the superheat steam temperature of the outlet of the second riser superheater group is regulated to the set value.

[0021] (3) The system for regulating the superheated steam temperature of the waste heat utilization of the riser pipe of the present application comprises a flow meter arranged after the secondary superheating pipe (i.e. the second riser superheater group) in the original waste heat recovery system (such as Figure 1 ), and the original flow regulating valve is interlocked with the flow meter, so that the problem of uncontrolled total steam flow caused by increasing the water inflow can be avoided.

[0022] (4) The system for regulating the superheated steam temperature of the waste heat utilization of the riser pipe of the present application comprises a double-purpose heat exchanger group used for the primary superheater, because the saturated steam temperature is low, the heat of the raw coal gas can be fully utilized, and the heat exchange efficiency of the superheater is improved; at the same time, because the secondary superheater is less, the steam flow entering the single secondary superheater is large, the temperature in the secondary superheater can be appropriately reduced, and the damage caused by the excessively high temperature of the secondary superheater can be prevented.

[0023] (5) The system for regulating the temperature of superheated steam utilizing the waste heat of the riser pipe according to the present application can realize that the outlet temperature of the superheated steam completely meets the requirements of subsequent working conditions; the system does not need a steam electric heater, thereby reducing the consumption of electric energy and meeting the requirements of the national energy policy; the system for regulating the temperature of superheated steam utilizing the waste heat of the riser pipe according to the present application reduces and stabilizes the temperature of the superheated riser pipe, thereby protecting the superheater of the riser pipe from high-temperature damage.

[0024] (6) In the system for regulating the temperature of superheated steam utilizing the waste heat of the riser pipe according to the present application, the dual-purpose heat exchanger group has dual-purpose functions, that is, it can be used as a superheater and has the same superheating effect as the first riser pipe superheater group and the second riser pipe superheater group, and it can also be used as a heat exchanger and has the same heat exchange effect as the riser pipe heat exchanger group. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0026] Figure 1 FIG. 1 is a structural schematic diagram of an existing waste heat recovery system;

[0027] Figure 2 FIG. 1 is a structural schematic diagram of an existing waste heat recovery system;

[0028] In the figure, 1 is a desalted water tank, 2 is a deaerator pump, 3 is a deaerator, 4 is a drum feed pump, 5 is a drum, 6 is a forced circulation pump, 7 is a riser pipe heat exchanger group, 8 is a dual-purpose heat exchanger group, 9 is a distribution cylinder, 10 is a first riser pipe superheater group, 11 is a second riser pipe superheater group, 12 is a flow regulating valve, 13 is a temperature regulating valve, 14 is a flow meter, 15 is a remote temperature meter, 16 is a first regulating valve, 17 is a second regulating valve, 18 is a first isolation valve, 19 is a second isolation valve, 20 is a third isolation valve, and 21 is a third regulating valve. DETAILED DESCRIPTION

[0029] Clearly, the described embodiments are only a part of all the embodiments of the present application, rather than all the embodiments. The description of at least one example embodiment is actually only illustrative, but never as any limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more of the features. Moreover, the terms "first", "second" and the like are used to distinguish similar objects, and do not necessarily be used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0031] Example 1

[0032] As Figure 2The system for regulating the temperature of superheated steam in the waste heat utilization of the riser pipe comprises a desalted water tank 1, an oxygen removal pump 2, an oxygen removal device 3, a steam drum feed water pump 4, a steam drum 5, a forced circulation pump 6, a riser pipe heat exchanger group 7, a dual-purpose heat exchanger group 8, a steam cylinder 9, a first riser pipe superheater group 10, a second riser pipe superheater group 11, a flow regulating valve 12, a temperature regulating valve 13, a flow meter 14 and a remote temperature meter 15. The desalted water tank 1, the oxygen removal pump 2 (two oxygen removal pumps are provided, one in use and one as a backup), the oxygen removal device 3, the steam drum feed water pump 4 (three steam drum feed water pumps are provided, two in use and one as a backup), the steam drum 5 and the forced circulation pump 6 are sequentially connected. The inlet and outlet of the riser pipe heat exchanger group 7 are respectively connected with the forced circulation pump 6 and the steam drum 5. The first regulating valve 16 is arranged between the oxygen removal pump 2 and the oxygen removal device 3, and the second regulating valve 17 is arranged between the steam drum feed water pump 4 and the steam drum 5. The steam drum 5, the forced circulation pump 6 and the riser pipe heat exchanger group 7 are provided in two groups. The steam drum 5 is connected with the steam cylinder 9. The outlet of the steam cylinder 9 is divided into two paths. One path is sequentially connected with the first riser pipe superheater group 10 and the second riser pipe superheater group 11, and the other path is connected with the inlet of the dual-purpose heat exchanger group 8. The third isolation valve 20 is arranged on the path between the steam cylinder 9 and the dual-purpose heat exchanger group 8, and the third isolation valve 20 is arranged at the rear section of the flow regulating valve 12. The inlet of the dual-purpose heat exchanger group 8 is connected with the forced circulation pump 6. The outlet of the dual-purpose heat exchanger group 8 is divided into two paths. One path is connected with the outlet of the riser pipe heat exchanger group 7 (and the second isolation valve 19 is arranged on the path between the dual-purpose heat exchanger group 8 and the outlet of the riser pipe heat exchanger group 7), and the other path is connected with the inlet of the second riser pipe superheater group 11. The flow regulating valve 12 is arranged at the outlet of the steam cylinder 9, and is used for regulating the flow of the two paths at the outlet of the steam cylinder 9. The temperature regulating valve 13 is arranged at the inlet of the dual-purpose heat exchanger group 8. The flow meter 14 and the remote temperature meter 15 are sequentially arranged at the outlet of the second riser pipe superheater group 11. The flow regulating valve 12 is interlocked with the flow meter 14. The temperature regulating valve 13 is interlocked with the remote temperature meter 15.

[0033] Preferably, in the system of the above embodiment 1: two circulating pumps are provided in each set of forced circulating pumps 6, one for use and one for backup; a plurality of riser heat exchangers are included in each set of riser heat exchanger groups 7. A first isolation valve 18 is provided in the passage of the forced circulating pump 6 and the dual-purpose heat exchanger group 8; a second isolation valve 19 is provided in the passage of the dual-purpose heat exchanger group 8 and the riser heat exchanger group 7; a third isolation valve 20 is provided in the passage of the split cylinder 9 and the dual-purpose heat exchanger group 8, and the third isolation valve 20 is provided in the rear section of the flow regulating valve 12. The first riser superheater group 10 is provided with 3-10 riser superheaters; the second riser superheater group 11 is also provided with 3-10 riser superheaters, and the specific number of riser superheaters in the first riser superheater group 10 and the second riser superheater group 11 can be determined according to actual calculation.

[0034] The working principle of the system for regulating the temperature of superheated steam using the waste heat of the riser is as follows: first, the desalted water output from the desalted water station outlet pipeline enters the desalted water tank 1 of the system, then is sent to the deaerator 3 for deaeration and heating by the deaeration pump 2 to generate deaerated water, then the liquid level of the deaerator 3 is regulated by the first regulating valve 16 controlling the water inflow and the liquid level interlocking, then the deaerated water is transported to the steam drum 5 by the steam drum feed water pump 4, the set water level is maintained by the second regulating valve 17 controlling the inlet flow and the steam drum liquid level interlocking, the steam drum 5 supplies deaerated water at a corresponding pressure and saturated temperature to the riser heat exchange group 7 by the forced circulating pump 6, and the deaerated water is forced to circulate and exchange heat between the steam drum 5 and the riser heat exchange group 7; after heat exchange, the steam-water mixture in the riser heat exchange group 7 enters the steam drum 5 for steam-water separation, and the generated saturated steam is sent from the upper part of the steam drum 5 to the split cylinder 9; the flow regulating valve 12 at the outlet of the split cylinder 9 controls a certain amount of saturated steam to enter the first riser superheater group 10 and the dual-purpose heat exchanger group 8 according to the steam flow (at this time, the dual-purpose heat exchanger group 8 is used as a superheater, which has the same function as the first riser superheater group 10 and the second riser superheater group 11), the two-way steam is once superheated by the first riser superheater group 10 and the dual-purpose heat exchanger group 8, and then is twice superheated by the second riser superheater group 11, and then the temperature of the twice superheated steam is detected by the remote thermometer 15;

[0035] When the temperature exceeds the set outlet temperature: the temperature regulating valve 13 is opened (at the same time, the first isolation valve 18 remains open, and the second isolation valve 19 and the third isolation valve 20 remain closed), then part of the water at the outlet of the forced circulating pump 6 enters the dual-purpose heat exchanger group 8 to vaporize, which reduces the outlet temperature of the dual-purpose heat exchanger group 8, and finally reduces the temperature of the twice superheated steam; when the temperature is lower than the set value: the temperature regulating valve 13 is closed.

[0036] When the temperature regulating valve 13 opens the entering part of water, it will cause the steam flow to increase (water gasification causes the steam flow to increase, measured by the flow meter 14), at this time the flow regulating valve 12 operates, and will appropriately close the flow regulating valve 12 to control the flow at the set flow, so as to achieve overall control of the temperature and flow, meet the working condition requirements, and finally form a required and stable superheated steam temperature, which enters the superheated user.

[0037] The dual-purpose heat exchanger group 8 provided in the present application has dual-purpose function, which can be used as a superheater, has the same superheating effect as the first rising pipe superheater group 10 and the second rising pipe superheater group 11, and can also be used as a heat exchanger, has the same heat exchange effect as the rising pipe heat exchanger group 7.

[0038] (1) When the dual-purpose heat exchanger group 8 is used as a superheater: first, keep the interlocking setting between the temperature regulating valve 13 and the remote thermometer 15. Then, after secondary superheating through the second rising pipe superheater group 11, ① when the outlet temperature exceeds the set outlet temperature: the temperature regulating valve 13 is opened, and the first isolation valve 18 and the third isolation valve 20 are kept open, and the second isolation valve 19 is kept closed, part of the water outlet by the forced circulation pump 6 is supplemented into the dual-purpose heat exchanger group 8 to vaporize, reduce the outlet temperature of the dual-purpose heat exchanger group 8, and finally realize the reduction of the temperature after secondary superheating; ② when the temperature is lower than the set value: the temperature regulating valve 13 is closed, the first isolation valve 18 and the third isolation valve 20 are still in the open state, and the second isolation valve 19 is kept closed. The saturated steam from the flow regulating valve 12 is divided into two paths: one path passes through the first rising pipe superheater group 10 for primary superheating, and then passes through the second rising pipe superheater group 11 for secondary superheating to enter the superheated user; the other path enters the dual-purpose heat exchanger group 8 for primary superheating, and then also passes through the second rising pipe superheater group 11 for secondary superheating to enter the superheated user.

[0039] (2) When the dual-purpose heat exchanger group 8 is used as a heat exchanger: first, cancel the interlocking setting between the temperature regulating valve 13 and the remote thermometer 15, and keep the temperature regulating valve 13 in the open state, keep the first isolation valve 18 and the second isolation valve 19 in the open state, and keep the third isolation valve 20 in the closed state.

[0040] At this point, the working principle of the system for regulating the temperature of superheated steam used to control the waste heat of the riser provided by the present invention is as follows: The aforementioned part is the same as the principle described in Embodiment 1, except that: the deoxygenated water from the outlet of the forced circulation pump 6 will enter the riser heat exchanger group 7 and the dual-purpose heat exchanger group 8 respectively. The deoxygenated water undergoes forced circulation heat exchange between the steam drum 5, the riser heat exchanger group 7 and the dual-purpose heat exchanger group 8. After heat exchange, the steam-water mixture in the riser heat exchanger group 7 and the dual-purpose heat exchanger group 8 enters the steam drum 5 for steam-water separation. The generated saturated steam is sent out from the top of the steam drum 5 to the steam distribution cylinder 9. The saturated steam then enters the first riser superheater group 10 and the second riser superheater group 11 in sequence for primary and secondary superheating, and then enters the superheated user.

[0041] like Figure 1 The existing waste heat recovery system shown only has a flow regulating valve to control the flow rate, and it cannot meet the operating requirements when the temperature is out of control.

[0042] The above-described preferred embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of the invention. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A system for regulating the temperature of superheated steam in a waste heat utilization of a riser, characterized by, The system comprises a desalted water tank (1), a deaerating pump (2), a deaerator (3), a drum feed water pump (4), a drum (5), a forced circulation pump (6), an up-tube heat exchanger group (7), a dual-purpose heat exchanger group (8), a steam distribution cylinder (9), a first up-tube superheater group (10), a second up-tube superheater group (11), a flow regulating valve (12), a temperature regulating valve (13), a flow meter (14) and a remote temperature meter (15); the desalted water tank (1), the deaerating pump (2), the deaerator (3), the drum feed water pump (4), the drum (5) and the forced circulation pump (6) are sequentially connected; the up-tube heat exchanger group (7) is connected with the forced circulation pump (6) and the drum (5) respectively; the drum (5) is connected with the steam distribution cylinder (9), and the outlet of the steam distribution cylinder (9) is divided into two paths: one path is sequentially connected with the first up-tube superheater group (10) and the second up-tube superheater group (11), and the other path is connected with the inlet of the dual-purpose heat exchanger group (8); the inlet of the dual-purpose heat exchanger group (8) is connected with the forced circulation pump (6), and the outlet is divided into two paths: one path is connected with the outlet of the up-tube heat exchanger group (7), and the other path is connected with the inlet of the second up-tube superheater group (11); the flow regulating valve (12) is arranged at the outlet of the steam distribution cylinder (9) to regulate the flow of the two paths; the temperature regulating valve (13) is arranged at the inlet of the dual-purpose heat exchanger group (8); the flow meter (14) and the remote temperature meter (15) are sequentially arranged at the outlet of the second up-tube superheater group (11); the flow regulating valve (12) is interlocked with the flow meter (14); and the temperature regulating valve (13) is interlocked with the remote temperature meter (15).

2. The system for regulating the temperature of superheated steam from waste heat utilization of a riser according to claim 1, characterized in that, The first regulating valve (16) is arranged between the deaerating pump (2) and the deaerator (3).

3. The system for regulating the superheated steam temperature of the waste heat utilization of the riser according to claim 1 or 2, characterized in that, The deaerating pump (2) is arranged as two, one for use and one for standby.

4. The system for regulating the temperature of superheated steam from waste heat utilization of a riser according to claim 1, characterized in that, The second regulating valve (17) is arranged between the drum feed water pump (4) and the drum (5).

5. The system for regulating the superheated steam temperature of the waste heat utilization of the riser according to claim 1, characterized in that, The drum feed water pump (4) is arranged as three, two for use and one for standby.

6. The system for regulating the superheated steam temperature of the waste heat utilization of the riser according to claim 1, characterized in that, The drum (5), the forced circulation pump (6) and the up-tube heat exchanger group (7) are all arranged as two groups.

7. The system for regulating the temperature of superheated steam from waste heat utilization of a riser according to claim 6, characterized in that, Two circulation pumps are arranged in each group of the forced circulation pump (6), one for use and one for standby; 3-10 up-tube superheaters are arranged in the first up-tube superheater group (10); and 3-10 up-tube superheaters are also arranged in the second up-tube superheater group (11).

8. The system for regulating the superheated steam temperature of the waste heat utilization of the riser according to claim 1, characterized in that, The first isolation valve (18) is arranged between the forced circulation pump (6) and the dual-purpose heat exchanger group (8); and the second isolation valve (19) is arranged between the dual-purpose heat exchanger group (8) and the up-tube heat exchanger group (7).

9. The system for regulating the superheated steam temperature of the waste heat utilization of the riser according to claim 1, characterized in that, The third isolation valve (20) is arranged between the steam distribution cylinder (9) and the dual-purpose heat exchanger group (8).

10. The system for regulating the superheated steam temperature of the waste heat utilization of the riser according to claim 1, characterized in that, The deaerator (3) is communicated with the cylinder (9) through a pipeline, and a third regulating valve (21) is arranged on the pipeline.

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