CN221036419U - System for utilize vapour waste heat stoving brick material - Google Patents

Abstract

The utility model provides a system for drying bricks by utilizing waste heat of steam, which comprises a heat exchanger, wherein a hot side steam inlet of the heat exchanger is communicated with steam supply equipment through a first pipeline, and a hot side air outlet of the heat exchanger is communicated with a greenhouse through a second pipeline; the cold side air inlet of the heat exchanger is communicated with the air supply equipment through a third pipeline, and the cold side steam outlet of the heat exchanger is communicated with the condensate water recovery system through a fourth pipeline; and the steam output by the steam supply equipment and the air output by the air supply equipment exchange heat in the heat exchanger, the air is conveyed into a greenhouse to dry brick materials after being heated in the heat exchanger, and the steam is conveyed into a condensate water recovery system to be recovered after being cooled in the heat exchanger. According to the technical scheme provided by the utility model, the steam is utilized to heat the air, and the hot air is conveyed into a greenhouse to sufficiently dry brick materials, so that the phenomenon of moisture regain of brick materials is avoided, and the curing effect of the brick materials is improved.

Description

System for utilize vapour waste heat stoving brick material

Technical Field

The application relates to the technical field of steam waste heat utilization, in particular to a system for drying brick materials by using steam waste heat.

Background

Along with the acceleration of the industrialization process in China, the generation and disposal demands of dangerous wastes are increasing. At present, the domestic advanced treatment method for recycling the nonferrous metal-containing hazardous waste adopts a high-temperature melting technology to comprehensively recycle the nonferrous metal-containing hazardous waste. Because of the complex sources of nonferrous metal dangerous wastes, the water content reaches 50-70%, and the pretreatment process of 'drying, batching and brickmaking and natural airing' is adopted for the raw materials to ensure the stability of the ingredients fed into the furnace.

The brick blocks to be charged into the furnace need to ensure certain strength and drop pulverization rate, and are generally required to be naturally dried for 3-10 days. The dehydration and solidification effects of brick blocks are greatly affected by the environment, even the brick blocks get moist in the environment with low temperature and high air humidity, the solidification effects of the brick blocks are affected, the furnace condition is deteriorated after the brick blocks are put into the furnace, the furnace treatment capacity is greatly reduced, and the occurrence rate of smoke dust is increased.

Disclosure of Invention

The application provides a system for drying brick materials by utilizing steam waste heat, which solves the problems of long natural drying time, poor dehydration and solidification effects and the like of brick materials in the prior art.

The application provides a system for drying bricks by utilizing waste heat of steam, which comprises a heat exchanger, wherein a hot side steam inlet of the heat exchanger is communicated with steam supply equipment through a first pipeline, and a hot side air outlet of the heat exchanger is communicated with a greenhouse through a second pipeline; the cold side air inlet of the heat exchanger is communicated with the air supply equipment through a third pipeline, and the cold side steam outlet of the heat exchanger is communicated with the condensate water recovery system through a fourth pipeline; and the steam output by the steam supply equipment and the air output by the air supply equipment exchange heat in the heat exchanger, the air is conveyed into a greenhouse to dry brick materials after being heated in the heat exchanger, and the steam is conveyed into a condensate water recovery system to be recovered after being cooled in the heat exchanger.

According to the technical scheme provided by the application, steam and air are utilized to perform full heat exchange in the heat exchanger, the temperature of the air is raised, the air after the temperature rise is conveyed into a greenhouse to fully dry brick materials, the phenomenon of moisture regain of brick materials is avoided, the curing effect of the brick materials is improved, and the airing time of the brick materials is shortened; and condensed water generated after heat exchange can be recycled after being recovered by a condensed water recovery system, so that energy waste is reduced.

In some embodiments, the first pipe is provided with a vapor flow regulating valve, the second pipe is provided with a temperature sensor, and the third pipe is provided with an air flow regulating valve; through setting up steam flow control valve, air flow control valve and temperature sensor, can be according to the hot air temperature value that temperature sensor monitored, nimble the input flow of steam and air to adjust the temperature and the flow of heat exchanger output hot air, in order to satisfy the requirements of greenhouse to the temperature.

In some embodiments, the steam flow regulating valve and the air flow regulating valve are all electric control valves, the steam flow regulating valve, the temperature sensor and the air flow regulating valve are respectively and electrically connected with the controller, and the controller can automatically control the steam flow regulating valve and the air flow regulating valve to regulate the corresponding steam flow and air flow according to the temperature data monitored by the temperature sensor, so that the automatic regulation and control of the temperature in a greenhouse are realized, and the labor intensity is reduced.

In certain embodiments, a vapor flow sensor is provided on the first conduit and an air flow sensor is provided on the third conduit; through setting up steam flow sensor and air flow sensor, can judge steam flow data and air flow data more directly perceivedly, be convenient for adjust steam flow and air flow more accurately, realize the accurate regulation and control of greenhouse temperature.

In some embodiments, the vapor supply device may be a waste heat boiler, and the heat energy of the waste heat boiler is fully utilized.

In some embodiments, the air supply device may be a blower, through which ambient air may be drawn into the third duct and delivered into the heat exchanger for heating.

In some embodiments, the greenhouse is of a closed structure, an air inlet of the greenhouse is communicated with the second pipeline, and an air outlet of the greenhouse is sequentially communicated with the alkaline washing tower and the activated carbon adsorption device; the air output from the greenhouse is purified by the alkaline washing tower and the activated carbon adsorption device and then discharged, so that the influence of waste gas discharge on the environment is reduced.

In some embodiments, the condensate recovery system may be a condensate and exhaust steam recovery device, and the water outlets of the condensate and exhaust steam recovery device are sequentially connected with a water pump and a heat utilization device, and after the condensate and steam are recovered by the condensate and exhaust steam recovery device, the recovered condensate is conveyed to the heat utilization device by the water pump for recycling, so that the utilization rate of the steam is improved, and the waste of heat energy in the condensate is reduced.

In some embodiments, the heat exchanger can be a plate heat exchanger, and has the advantages of compact structure, small occupied area, high heat exchange efficiency, high pressure bearing capacity, reliable operation and the like.

In some embodiments, the air and the steam exchange heat in the heat exchanger in a countercurrent mode, and the heat exchange of the air and the steam is realized in a countercurrent heat exchange mode, so that the heat exchange efficiency is further improved.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

The drawings in the present application are for illustrating preferred embodiments and are not to be construed as limiting the application as various other advantages and benefits will be apparent to those of ordinary skill in the art. Also, throughout the drawings, the same reference numerals are used to designate the same or similar components.

FIG. 1 is a schematic diagram of a system for drying bricks by using residual heat of steam according to an embodiment of the present application;

Icon: 1. a heat exchanger; 2. a hot side vapor inlet; 3. a vapor supply device; 4. a first pipe; 5. a hot side air outlet; 6. heating; 7. a second pipe; 8. a cold side air inlet; 9. an air supply device; 10. a third conduit; 11. a cold side vapor outlet; 12. a condensate recovery system; 13. a fourth conduit; 14. a vapor flow regulating valve; 15. a temperature sensor; 16. an air flow rate regulating valve; 17. a vapor flow sensor; 18. an air flow sensor; 19. an alkaline washing tower; 20. an activated carbon adsorption device; 21. a water pump; 22. using a thermal device.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more (including two) unless otherwise specifically defined.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1, the present application provides a system for drying bricks by using residual heat of steam, comprising a heat exchanger 1, wherein a hot side steam inlet 2 of the heat exchanger 1 is communicated with a steam supply device 3 through a first pipeline 4, and a hot side air outlet 5 of the heat exchanger 1 is communicated with a greenhouse 6 through a second pipeline 7; the cold side air inlet 8 of the heat exchanger 1 is communicated with the air supply device 9 through a third pipeline 10, and the cold side steam outlet 11 of the heat exchanger 1 is communicated with the condensate water recovery system 12 through a fourth pipeline 13; the steam output by the steam supply device 3 exchanges heat with the air output by the air supply device 9 in the heat exchanger 1, the air is heated in the heat exchanger 1 and then is conveyed into the greenhouse 6 to dry brick materials, and the steam is cooled in the heat exchanger 1 and then is conveyed into the condensate recovery system 12 to be recycled.

According to the technical scheme provided by the application, steam and air are utilized to fully exchange heat in the heat exchanger 1, the temperature of the air is raised, the air after the temperature rise is conveyed into the greenhouse 6 to fully dry brick materials, the phenomenon of moisture regain of brick materials is avoided, the curing effect of the brick materials is improved, and the airing time of the brick materials is shortened; and the condensed water generated after heat exchange can be recycled after being recovered by the condensed water recovery system 12, so that the energy waste is reduced.

With continued reference to fig. 1, in some embodiments, the first pipe 4 is provided with a vapor flow rate adjusting valve 14, the second pipe 7 is provided with a temperature sensor 15, and the third pipe 10 is provided with an air flow rate adjusting valve 16; by arranging the steam flow regulating valve 14, the air flow regulating valve 16 and the temperature sensor 15, the input flow of steam and air can be flexibly regulated according to the hot air temperature value monitored by the temperature sensor 15, so that the temperature and the flow of hot air output by the heat exchanger 1 are regulated to meet the requirement of a greenhouse 6 on temperature.

In some embodiments, the vapor flow regulating valve 14 and the air flow regulating valve 16 are all electrically controlled valves, the vapor flow regulating valve 14, the temperature sensor 15 and the air flow regulating valve 16 are respectively electrically connected with a controller, and the controller can automatically control the vapor flow regulating valve 14 and the air flow regulating valve 16 to regulate the corresponding vapor flow and air flow according to the temperature data monitored by the temperature sensor 15, so that the automatic regulation and control of the temperature in the greenhouse 6 are realized, and the labor intensity is reduced.

With continued reference to fig. 1, in some embodiments, the first pipe 4 is provided with a vapor flow sensor 17, and the third pipe 10 is provided with an air flow sensor 18; through setting up steam flow sensor 17 and air flow sensor 18, can judge steam flow data and air flow data more directly perceivedly, be convenient for adjust steam flow and air flow more accurately, realize the accurate regulation and control of greenhouse 6 temperature.

In a specific embodiment, a vapor pressure sensor and a vapor temperature sensor may be disposed on the first pipe 4 and the fourth pipe 13, and an air temperature sensor may be disposed on the third pipe 10, and the vapor pressure in the pipes may be monitored by the pressure sensors, so as to avoid the vapor pressure exceeding an upper limit value; through setting up vapor temperature sensor and air temperature sensor, conveniently calculate the heat exchange efficiency of air and steam.

In some embodiments, the steam supply device 3 may be a waste heat boiler, and is used for supplying high-temperature saturated steam, so that heat energy of the waste heat boiler is fully utilized.

In the implementation process, other devices capable of outputting high-temperature steam can be adopted by the steam supply device 3.

In some embodiments, the air supply device 9 may be a blower, through which outside air may be drawn into the third duct 10 and delivered into the heat exchanger 1 for heating.

With continued reference to fig. 1, in some embodiments, the greenhouse 6 has a closed structure, an air inlet of the greenhouse 6 is communicated with the second pipeline 7, and an air outlet of the greenhouse 6 is sequentially communicated with the alkaline tower 19 and the activated carbon adsorption device 20; the air output by the greenhouse 6 is purified by the alkaline washing tower 19 and the activated carbon adsorption device 20 and then discharged, so that the influence of waste gas discharge on the environment is reduced.

In a specific embodiment, a main hot air pipeline is arranged in the greenhouse 6, the main hot air pipeline is transversely and uniformly arranged on two sides of brick materials, a plurality of branch pipes which are uniformly distributed are led out from the main hot air pipeline on two sides, and a plurality of air outlets are formed in the branch pipes to supply hot air to the brick materials.

With continued reference to fig. 1, in some embodiments, the condensate recovery system 12 may be a condensate and exhaust steam recovery device, and a water outlet of the condensate and exhaust steam recovery device is sequentially connected to a water pump 21 and a heat utilization device 22, and after the condensate and steam are recovered by the condensate and exhaust steam recovery device, the recovered condensate is conveyed to the heat utilization device 22 by the water pump 21 for recycling, so that the utilization rate of steam is improved, and the waste of heat energy in the condensate is reduced.

In one embodiment, the heat using device 22 may be a boiler deaerator or other device that requires the use of hot water.

In some embodiments, the heat exchanger 1 may be a plate heat exchanger, which has advantages of compact structure, small occupied area, high heat exchange efficiency, high pressure bearing capacity, reliable operation, etc.

With continued reference to fig. 1, in some embodiments, the air and the vapor exchange heat in the heat exchanger 1 in a countercurrent manner, so that heat exchange between the air and the vapor is realized by adopting a countercurrent heat exchange manner, thereby further improving heat exchange efficiency; in the figure, solid arrows indicate the flow paths of the vapor, and broken arrows indicate the flow paths of the air; the high-temperature steam flows from top to bottom to exchange heat with air after entering the heat exchanger 1, and the air flows from bottom to top to exchange heat with the steam after entering the heat exchanger 1.

In a specific embodiment, the saturated steam pressure output by the waste heat boiler is 0.4MPa, the temperature is 143.6 ℃, and after air exchanges heat with steam in the heat exchanger 1, the temperature of the air is heated to 50-70 ℃; when the system provided by the embodiment of the application is used, the required air temperature can be automatically regulated by a human operator or a controller, taking manual regulation as an example, the opening degree of the steam flow regulating valve 14 is regulated to enable the flow rate displayed by the steam flow sensor 17 to be 597kg/h, and the opening degree of the air flow regulating valve 16 is regulated to enable the flow rate displayed by the air flow sensor 18 to be 10000Nm ³/h; after the steam and the air enter the heat exchanger 1 to exchange heat fully, the steam and the high-temperature condensed water discharged from the cold side steam outlet 11 of the heat exchanger 1 enter a condensed water and exhaust steam recovery device to be recovered by the high-temperature condensed water, and the high-temperature condensed water is conveyed to a boiler deaerator for recycling through a water suction pump 21; the hot air discharged from the hot side air outlet 5 of the heat exchanger 1 is conveyed into the greenhouse 6 through the second pipeline 7 to dry brick materials, and the air discharged from the greenhouse 6 is discharged after being purified by the alkaline washing tower 19 and the activated carbon adsorption device 20 in sequence.

After the system of the embodiment is adopted, the brick material can be cured and dried only for 8-16 hours, compared with the traditional natural drying technology, after the system of the embodiment is adopted, the burning rate of the brick material in a furnace is reduced by 1%, the occurrence rate of smoke dust is reduced by 0.5%, the furnace treatment capacity is improved by 10%, and the furnace condition of the brick material in the furnace is greatly improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same. Although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no contradictory conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A system for drying bricks by utilizing waste heat of steam is characterized by comprising a heat exchanger (1), wherein a hot side steam inlet (2) of the heat exchanger (1) is communicated with steam supply equipment (3) through a first pipeline (4), and a hot side air outlet (5) of the heat exchanger (1) is communicated with a greenhouse (6) through a second pipeline (7); the cold side air inlet (8) of the heat exchanger (1) is communicated with the air supply equipment (9) through a third pipeline (10), and the cold side steam outlet (11) of the heat exchanger (1) is communicated with the condensate water recovery system (12) through a fourth pipeline (13); the steam output by the steam supply equipment (3) and the air output by the air supply equipment (9) are subjected to heat exchange in the heat exchanger (1), the air is conveyed into the greenhouse (6) to dry brick materials after being heated in the heat exchanger (1), and the steam is conveyed into the condensate water recovery system (12) to be recovered and utilized after being cooled in the heat exchanger (1).

2. A system for drying bricks by using residual heat of steam according to claim 1, wherein a steam flow regulating valve (14) is arranged on the first pipeline (4), a temperature sensor (15) is arranged on the second pipeline (7), and an air flow regulating valve (16) is arranged on the third pipeline (10).

3. The system for drying bricks by utilizing residual heat of steam according to claim 2, wherein the steam flow regulating valve (14) and the air flow regulating valve (16) are all electric control valves, and the steam flow regulating valve (14), the temperature sensor (15) and the air flow regulating valve (16) are respectively electrically connected with a controller.

4. A system for drying bricks by using residual heat of steam according to claim 2 or 3, wherein the first pipeline (4) is provided with a steam flow sensor (17), and the third pipeline (10) is provided with an air flow sensor (18).

5. A system for drying bricks by means of residual heat from steam according to claim 1, characterized in that the steam supply device (3) is a waste heat boiler.

6. A system for drying bricks by means of residual heat from steam according to claim 1, characterized in that the air supply device (9) is a blower.

7. The system for drying bricks by utilizing the waste heat of steam according to claim 1, wherein the greenhouse (6) is of a closed structure, an air inlet of the greenhouse (6) is communicated with the second pipeline (7), and an air outlet of the greenhouse (6) is sequentially communicated with an alkaline washing tower (19) and an activated carbon adsorption device (20).

8. The system for drying bricks by utilizing steam waste heat according to claim 1, wherein the condensed water recovery system (12) is a condensed water and exhaust steam recovery device, and a water outlet of the condensed water and exhaust steam recovery device is sequentially communicated with a water suction pump (21) and a heat utilization device (22).

9. A system for drying bricks by means of residual heat from steam according to claim 1, characterized in that the heat exchanger (1) is a plate heat exchanger.

10. A system for drying bricks by means of residual heat from steam according to claim 1, characterized in that the air and steam are counter-currently exchanged in the heat exchanger (1).