Material slag waste heat recovery device with cooling and steam generating functions

Abstract

The invention discloses a material slag waste heat recovery device with cooling and steam generating functions. The material slag waste heat recovery device comprises intelligent material distribution equipment, a steam water jacket and a control system. The intelligent material distributing equipment is composed of a multi-channel conical material distributing hopper, steam water jackets are arranged at outlets of material slag channels of the conical material distributing hopper, and material slag is evenly dispersed in the steam water jackets through the material slag channels of the conical material distributing hopper for heat exchange. The control system adjusts the opening size of each material slag channel of the conical material distributing hopper according to the temperature and the mass of the material slag subjected to heat exchange through each steam water jacket, and the control system adjusts the water inlet amount of each steam water jacket according to the steam temperature of a steam outlet of each steam water jacket, the flow of a water inlet and the water liquid level in the heat exchange pipe. According to the system, the functions of efficient waste heat recovery, material slag cooling and steam generation are integrated, maximum utilization of high-temperature industrial material slag waste heat can be achieved, the temperature of the material slag is effectively reduced, meanwhile, environmental pollution is relieved, and the comprehensive utilization efficiency of energy is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical fields of industrial waste heat utilization and cooling treatment of secondary zinc oxide slag. More specifically, it relates to a slag waste heat recovery device with functions of temperature reduction and steam generation. Background Art

[0002] During the iron and steel smelting process, a large amount of zinc-containing dust sludge is contained in the dust collected by the dust removal system. The main chemical components of the zinc-containing dust sludge are iron and carbon, and contain some impurities such as zinc, lead, potassium, sodium oxides, etc. Most of the zinc-containing dust sludge is returned to sintering or directly sold. However, returning zinc and alkali metal solid waste to sintering will cause harmful elements such as zinc, lead, potassium, and sodium to continuously accumulate in the blast furnace process, which will have an adverse impact on blast furnace smelting and the life of the kiln. At the same time, the external sales market for dust sludge is small, and random stacking will cause serious environmental pollution. Moreover, valuable elements such as iron, carbon, zinc, potassium, and sodium in it are not refined, resulting in serious waste of resources. Nowadays, steel plants are equipped with rotary kilns to recover zinc-containing dust sludge, and the valuable elements are respectively refined into products. Among them, zinc elements are generated into secondary zinc oxide through the rotary kiln and can be directly sold externally, while the iron-containing slag after treatment has a reduced zinc content and can be directly returned to the sintering batching for use.

[0003] When using a rotary kiln to calcine the dust collected by a steel plant, a large amount of high-temperature slag will be generated. These slags not only have a high temperature (usually exceeding 1000 °C), but also contain a large amount of recoverable waste heat resources. Traditional slag treatment methods often only focus on quickly cooling the slag, but ignore the recovery and utilization of waste heat, resulting in a large amount of energy waste. At the same time, the composition of this slag is complex and cannot be directly exposed to air. In the current industry, most of them adopt the water quenching method, that is, the slag is directly discharged into the water pool for cooling. The temperature of the water in the water pool rises sharply, generating a large amount of steam dispersed in the air, which not only wastes waste heat resources, but also may cause environmental pollution. Therefore, developing an equipment system that can not only effectively cool the slag but also efficiently recover waste heat, effectively utilize the waste heat of these high-temperature slags, and convert it into available energy is an urgent problem to be solved in the current industrial waste heat utilization field. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and propose a slag waste heat recovery device with functions of temperature reduction and steam generation, which integrates high-efficiency waste heat recovery, slag temperature reduction and steam generation functions, can achieve the maximum utilization of the waste heat of high-temperature industrial slag, effectively reduce the temperature of the slag while reducing environmental pollution, and significantly improve the comprehensive utilization efficiency of energy.

[0005] The purpose of the present invention is achieved through the following technical solutions.

[0006] A slag waste heat recovery device with functions of cooling and steam generation, comprising an intelligent material distribution device, a steam jacket and a control system; the intelligent material distribution device consists of a multi-channel conical material distribution hopper, and steam jackets are arranged at the outlets of the slag channels of the conical material distribution hopper. The slag is evenly dispersed in each steam jacket through the slag channels of the conical material distribution hopper for heat exchange; the control system adjusts the opening sizes of the slag channels of the conical material distribution hopper according to the temperature and quality of the slag after heat exchange in each steam jacket, and the control system adjusts the water inlet volume of each steam jacket according to the steam temperature at the steam outlet of each steam jacket, the flow rate at the water inlet, and the water level in the heat exchange tube.

[0007] Further, preferably, the conical material distribution hopper includes a material receiving port, a conical material distribution inclined surface integrated with the material receiving port is arranged inside the material receiving port, and a slag channel integrated with the bottom of the material receiving port is arranged at the bottom of the material receiving port. The slag is diverted to each slag channel through the material distribution inclined surface.

[0008] Further, preferably, the slag channels integrated with the bottom of the material receiving port are arranged at equal intervals, each slag channel is arranged obliquely outwards, a material distribution flange for connecting the corresponding steam jacket is arranged at the bottom outlet of each slag channel, and the bottom outlet of each slag channel is matched with the inlet of the corresponding steam jacket.

[0009] Further, preferably, electric valves are arranged at the inlets of the slag channels of the conical material distribution hopper for adjusting the opening sizes of the slag channels.

[0010] Further, preferably, a bracket is arranged at the bottom of the material distribution inclined surface of the conical material distribution hopper, a material stirring rod is arranged on the upper surface of the material distribution inclined surface, a rotating shaft penetrates through the top of the material distribution inclined surface, the bottom of the rotating shaft is connected with a motor on the bracket, a limiting block and a sliding block are arranged on the upper part of the rotating shaft, and the limiting block is located above the sliding block. The sliding block is connected with each material stirring rod.

[0011] Further, preferably, each steam jacket is composed of a cylindrical steam heat exchanger. The steam heat exchanger includes multiple layers of heat exchange tubes nested and arranged from inside to outside. The top of each layer of heat exchange tubes is connected with an upper header box communicated with the inside thereof, and the bottom of each layer of heat exchange tubes is connected with a lower header box communicated with the inside thereof. The adjacent upper header boxes are connected by water pipes and internally communicated, and the adjacent lower header boxes are connected by water pipes and internally communicated.

[0012] Further, preferably, diaphragms are connected between two adjacent heat exchange tubes in the outermost layer of each steam jacket, H-shaped fins in the same direction are arranged on each heat exchange tube in the outermost layer, and 4-direction H-shaped fins with an included angle of 90° are arranged on each heat exchange tube in the remaining layers.

[0013] Further, preferably, an upper flange is provided at the top of the outermost upper header in each steam water jacket, multiple middle flanges are coaxially arranged outside the outermost heat exchange tubes, and a lower flange is provided at the bottom of the outermost lower header. Uniformly distributed reinforcing ribs are provided between the upper flange and the adjacent middle flange, and between the lower flange and the adjacent middle flange; each of the upper header and the lower header adopts an annular pipeline.

[0014] Further, preferably, an inlet and a blowdown port are provided on the outermost lower header in each steam water jacket, and a steam outlet is provided on the outermost upper header.

[0015] Further, preferably, slag temperature sensors are installed at the slag outlets of each steam water jacket for monitoring the temperature of the slag after heat exchange. The slag after heat exchange in each steam water jacket is transported by a conveyor belt, and a quality sensor is installed on the conveyor belt for monitoring the quality of the slag after heat exchange. According to the monitored slag temperature and slag quality, the control system adjusts the opening sizes of the slag channels of the conical distributor hopper, thereby adjusting the distribution speed;

[0016] Water flow sensors are installed at the inlets of each steam water jacket for monitoring the water inflow of each steam water jacket, and steam temperature sensors are installed at the outlets of each steam water jacket for monitoring the temperature of the steam after heat exchange. When the steam temperature exceeds or is lower than the set temperature value, the water pump connected to the inlet is adjusted through the control system to increase or decrease the water inflow, so as to lower or raise the steam temperature;

[0017] Level sensors are installed in the heat exchange tubes of each steam water jacket for monitoring the water level in the heat exchange tubes. When the water level in the heat exchange tubes is lower than the designed value, the water pump connected to the inlet is adjusted through the control system to increase the water inflow.

[0018] Compared with the prior art, the beneficial effects brought by the technical solution of the present invention are:

[0019] (1) High-efficiency waste heat recovery: The present invention realizes the high-efficiency recovery and utilization of the waste heat of high-temperature slag through the innovative steam water jacket equipment and intelligent control technology. The generated saturated steam can be used for power generation or other heat energy utilization fields, improving the energy utilization efficiency.

[0020] (2) Reduction of slag temperature: The present invention realizes a significant reduction in the slag temperature through the design of multi-stage heat exchange and intelligent feeding devices. This not only reduces the thermal pollution and solid waste pollution of the slag to the environment, but also improves the efficiency and safety of subsequent slag treatment.

[0021] (3) Intelligent management: The present invention adopts a DCS remote control system to perform intelligent management and control on the equipment, realizing the automatic operation and remote monitoring of the equipment. This not only improves the production efficiency and management level, but also reduces the labor cost and operation and maintenance cost.

[0022] (4) Safe and reliable: The present invention is equipped with multiple safety monitoring and protection measures to ensure the safe and stable operation of the equipment. At the same time, high-temperature resistant materials and special structural designs are adopted to improve the equipment's resistance to high temperature, corrosion, and wear. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the slag waste heat recovery device with the functions of cooling and steam generation according to the present invention.

[0024] Figure 2 It is a cross-sectional view of the intelligent material distribution device in the present invention.

[0025] Figure 3 It is a partial three-dimensional schematic diagram of the conical material distribution hopper in the present invention.

[0026] Figure 4 It is a cross-sectional view of the steam water jacket in the present invention.

[0027] Figure 5 It is a three-dimensional schematic diagram of the steam water jacket in the present invention.

[0028] Figure 6 It is a schematic diagram of the arrangement of the upper header in each steam water jacket of the present invention.

[0029] Figure 7 It is a schematic diagram of the arrangement of the diaphragm and fins in the present invention.

[0030] Figure 8 It is a schematic diagram of the steam drum in the present invention.

[0031] Figure 9 It is a schematic diagram of the principle of the control system in the present invention.

[0032] Reference numerals: 1 - steam water jacket, 2 - conical material distribution hopper, 3 - bolt, 4 - nut, 5 - gasket, 6 - steam drum;

[0033] 101 - lower flange, 102 - reinforcing rib, 103 - lower header, 104 - diaphragm, 105 - middle flange, 106 - heat exchange tube, 107 - fin, 108 - upper header, 109 - upper flange, 110 - steam outlet, 111 - blowdown port, 112 - water inlet;

[0034] 201 - material receiving port, 202 - slag material channel, 203 - material distribution flange, 204 - support, 205 - material distribution inclined plane, 206 - motor, 207 - slider, 208 - rotating shaft, 209 - limit block, 210 - material stirring rod. Detailed Embodiments

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] The present invention provides a slag waste heat recovery device with functions of temperature reduction and steam generation, mainly including an intelligent material distribution device 2, a steam jacket 1 and a control system. The device of the present invention not only realizes the efficient recovery and utilization of the waste heat of high-temperature slag, but also significantly reduces the temperature of the slag and effectively reduces environmental pollution.

[0037] The intelligent material distribution device is composed of a multi-channel conical material distribution hopper 2. As Figure 1 shown, steam jackets 1 are arranged at the outlets of the slag channels 202 of each conical material distribution hopper 2. The slag coming out of a rotary kiln or the like is evenly dispersed in the corresponding steam jackets 1 through the slag channels 202 of the conical material distribution hopper 2 for heat exchange. The steam jacket 1 generates saturated steam through heat exchange with the slag, and the generated saturated steam is incorporated into the saturated steam generated by the waste heat boiler at the kiln tail to jointly drive a steam turbine to generate electricity, increasing the waste heat power generation. The control system can monitor online. According to the temperature and quality of the slag after heat exchange through each steam jacket 1, it adjusts the opening sizes of the slag channels 202 of the conical material distribution hopper 2, thereby controlling the falling speed of the slag. The control system adjusts the water inflow of each steam jacket 1 according to the steam temperature at the steam outlet of each steam jacket 1, the flow rate at the water inlet, and the water level in the heat exchange tube, and can match the complete heat exchange process between the steam jacket 1 and the slag.

[0038] (1) Intelligent material distribution device

[0039] The intelligent material distribution device is a key component of the device of the present invention. The core of its design lies in ensuring that the slag can flow into each steam jacket 1 evenly and stably to achieve the best heat exchange effect.

[0040] As Figure 2 shown, the conical material distribution hopper 2 of the intelligent material distribution device mainly includes a material receiving port 201, a material distribution inclined surface 205 and a plurality of slag channels 202 which are of an integral structure. The material distribution inclined surface 205 is arranged in the material receiving port 201 and can be set as a conical shape. This conical design helps the slag to flow and distribute evenly and stably around under the action of gravity. A plurality of the slag channels 202 are evenly arranged at equal intervals at the bottom of the material receiving port 201. Figure 3 Only four of them are shown in

[0041] for illustration. The slag is diverted to each slag channel 202 through the material distribution inclined surface 205 and thus is dispersed in the corresponding steam jackets 1 for heat exchange 9.

[0042] In the above intelligent material distribution device, preferably, each slag channel 202 is arranged to incline outwards. At the bottom outlet of each slag channel 202, there is a material distribution flange 203 with an integral structure for connecting the corresponding steam water jacket 1. The bottom outlets of each slag channel 202 are all matched with the inlets of the corresponding steam water jackets 1, so as to ensure that the slag can smoothly enter the interior of the steam water jacket 1 under the condition of minimum resistance.

[0043] In the above intelligent material distribution device, preferably, electric valves are provided at the inlets of each slag channel 202 of the conical material distribution hopper 2 for adjusting the opening size of each slag channel 202.

[0044] In the above intelligent material distribution device, preferably, a support bracket 204 for support is provided at the bottom of the material distribution inclined surface 205 of the conical material distribution hopper 2. A material pushing rod 210 is provided on the upper surface of the material distribution inclined surface 205. A rotating shaft 208 is arranged through the top of the material distribution inclined surface 205. The bottom of the rotating shaft 208 is connected to a motor 206 on the support bracket 204. A limiting block 209 and a slider 207 are provided on the upper part of the rotating shaft 208, and the limiting block 209 is located above the slider 207. The slider 207 is connected to each material pushing rod 210. The motor 206 drives the rotating shaft 208 to rotate, driving the slider 207 thereon to rotate with it, and further driving each material pushing rod 210 to rotate. These material pushing rods 210 can efficiently guide the slag to be evenly distributed radially along the gravity direction, thus greatly improving the flow state stability of the slag during the diversion process. This design can reduce the generation of turbulence and eddy currents, and thus improve the uniformity and stability of material distribution.

[0045] Through the above design, the intelligent material distribution device realizes the efficient, stable and uniform distribution of slag during the material distribution process, providing a strong guarantee for the heat exchange efficiency and performance of the entire device.

[0046] (2) Steam water jacket

[0047] The steam water jacket is the main component for realizing waste heat recovery and slag cooling in the present invention. Figure 1 Four steam water jackets are provided in the device, arranged in 2 rows and 2 columns to adapt to different site requirements, but this arrangement is only illustrative. All components in the steam water jacket are ensured of the stability and durability of the equipment through precise manufacturing processes and strict quality inspection procedures.

[0048] Each of the steam water jackets 1 is composed of a cylindrical steam heat exchanger, such as Figure 4 and Figure 5As shown, the steam heat exchanger includes multiple layers of heat exchange tubes 106 nested from the inside out in a circular arrangement. Each layer of heat exchange tubes 106 is arranged in a circular ring. According to the slag discharge speed and load demand of the slag, the heat exchange area is accurately calculated and determined, and based on this, the number, size, and arrangement method of the heat exchange tubes 106 can be designed. For example, 5 layers of heat exchange tubes 106 are arranged inside each steam heat exchanger in the figure to improve the heat exchange efficiency. After the slag passes through the respective slag channels 202 of the conical distributor 2, it flows downward from the top of the corresponding steam water jacket 1 through the spaces between each layer of heat exchange tubes 106 and exchanges heat with the cold water inside the heat exchange tubes 106, and finally flows out from the bottom of the steam water jacket 1.

[0049] At the top of each layer of the heat exchange tubes 106, there is an upper header 108 connected. Each upper header 108 is internally connected to the inside of each heat exchange tube 106 in its corresponding layer. The adjacent upper headers 108 are connected and internally connected through water pipes, as Figure 6 shown. At the bottom of each layer of the heat exchange tubes 106, there is a lower header 103 connected. Each lower header 103 is internally connected to the inside of each heat exchange tube 106 in its corresponding layer. The adjacent lower headers 103 are connected and internally connected through water pipes, and the arrangement method is the same as Figure 6 that. Preferably, the upper headers 108, lower headers 103, and heat exchange tubes 106 can be connected and internally connected through a precision welding process. The upper headers 108 and the lower headers 103 can be connected and internally connected through a precision water pipe welding process, ensuring tightness and stability, with smooth water flow, and forming a complete circulating water system. This connection method not only improves the heat exchange efficiency of the equipment but also reduces the energy consumption and failure rate caused by poor water flow.

[0050] In the above-mentioned steam water jacket, preferably, between two adjacent heat exchange tubes 106 in the outermost layer of each steam water jacket 1, there is a diaphragm 104 connected. Each heat exchange tube 106 in the outermost layer is provided with an H-shaped fin 107 in the same direction, and each heat exchange tube 106 in the remaining layers is provided with 4 H-shaped fins 107 in 4 directions with an included angle of 90°, as Figure 7 shown. This fin design not only enhances the heat transfer performance of the heat exchange tubes 106 but also improves their mechanical strength, enabling them to withstand long-term operation in a high-temperature and high-pressure environment.

[0051] In the above steam jacket, preferably, each of the upper header 108 and the lower header 103 can adopt an annular pipe. A plurality of middle flanges 105 are coaxially arranged outside the outermost heat exchange tubes 106 in each steam jacket 1. A lower flange 101 is arranged at the bottom of the outermost lower header 103, and an upper flange 109 is arranged at the top of the outermost upper header 108. The upper flange 109 in each steam jacket 1 is connected to the corresponding material distribution flange 203 through multiple sets of connection components, and each set of connection components includes a bolt 3, a nut 4, and a gasket 5. To improve the overall strength and stability of the equipment, multiple sets of evenly distributed reinforcing ribs 102 are arranged between the upper flange 109 and the adjacent middle flange 105, and between the lower flange 101 and the adjacent middle flange 105. These reinforcing ribs not only enhance the structural strength of the equipment but also improve its seismic performance, ensuring the stable operation of the equipment under harsh working conditions.

[0052] In the above steam jacket, preferably, the outermost lower header 103 in each steam jacket 1 is provided with a water inlet 112 and a blowdown port 111. The water inlet 112 is used to inject cold water into the equipment, and the blowdown port 111 is used to discharge dirt and sediments in the heat exchange tubes 106 to prevent blockage and corrosion. The outermost upper header 108 is provided with a steam outlet 110 for discharging saturated steam. This design not only improves the heat exchange efficiency and service life of the equipment but also reduces the maintenance cost and downtime. After passing through multi-stage filtration and pretreatment, the cold water enters the lower header 103 and flows through multiple sets of heat exchange tubes 106 to conduct heat exchange with the slag outside the tubes. The generated saturated steam (temperature about 175 °C) is discharged through the steam outlet 110 of the upper header 108 and is collected in the steam drum 6 for subsequent utilization. As Figure 8 shown, the steam drum 6 is provided with a steam inlet 601 and a water outlet 602.

[0053] (3) Control system

[0054] The control system is the intelligent core of the device of the present invention, and its design goal is to realize the remote monitoring, intelligent management, and safety guarantee of the equipment.

[0055] In the present invention, the control system adopts a DCS remote control system for remote monitoring and control. To ensure the safe and stable operation of the device of the present invention, multiple safety monitoring and protection measures are equipped, mainly including a steam temperature sensor, a liquid level sensor, and a water flow sensor to monitor the water temperature change to prevent dry burning; a slag temperature sensor and a quality sensor to monitor the steam temperature to prevent over-temperature or insufficient temperature, as Figure 9 shown. These measures together constitute the safety guarantee system of the system, ensuring the timely response and protection of the equipment under abnormal working conditions.

[0056] At the slag discharge outlets of each steam jacket 1 (preferably at the lower header 103), slag temperature sensors are installed to monitor the temperature of the slag after heat exchange. The slag after heat exchange in each steam jacket 1 is transported by a conveyor belt, and a mass sensor is installed on the conveyor belt to monitor the mass of the slag after heat exchange and detect parameters such as the flow rate of the slag. According to the monitored parameters such as the slag temperature and slag mass, the electric valves of the conical distributor hopper 2 are adjusted through the control system to automatically adjust the opening size of each slag channel 202, thereby adjusting the distribution speed to ensure that each steam jacket 1 can receive uniform and appropriate slag input.

[0057] Water flow sensors are installed at the water inlets 112 of each steam jacket 1 to monitor the water inflow of each steam jacket 1, and steam temperature sensors are installed at the steam outlets 110 of each steam jacket 1 to monitor the temperature of the steam after heat exchange. When the steam temperature exceeds the set temperature value (such as 20 °C), it is necessary to adjust the water pump connected to the water inlet 112 through the control system to increase the water inflow and lower the steam temperature. When the steam temperature is lower than the set temperature value (such as 20 °C), the water pump connected to the water inlet 112 is adjusted through the control system to reduce the water inflow and increase the steam temperature.

[0058] Level sensors are installed inside any heat exchange tube 106 of each steam jacket 1 to monitor the water level in the heat exchange tube 106. The control system adjusts the water inflow of the heat exchange tube 106 in each steam jacket 1 according to the data measured by the level sensor. When the water level in the heat exchange tube 106 is lower than the design value, the water pump connected to the water inlet 112 is adjusted through the control system to increase the water inflow to prevent the heat exchange tube 106 from dry burning.

[0059] In addition, the control system can also drive the motor 206. This remote control system not only improves the heat exchange efficiency, avoids equipment damage and energy waste caused by uneven slag distribution, but also improves the operation efficiency and reliability of the equipment, and reduces manual intervention and operation and maintenance costs.

[0060] Although the functions and working processes of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific functions and working processes. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit of the present invention and the scope protected by the claims, and these all fall within the protection scope of the present invention.

Claims

1. A slag waste heat recovery device with a function of temperature reduction and steam generation, characterized in that, It includes an intelligent material distribution device, a steam jacket and a control system; the intelligent material distribution device consists of a multi-channel conical material distribution hopper (2), and steam jackets (1) are arranged at the outlets of the slag channels (202) of the conical material distribution hopper (2). The slag is evenly dispersed in each steam jacket (1) through the slag channels (202) of the conical material distribution hopper (2) for heat exchange (9); the control system adjusts the opening sizes of the slag channels (202) of the conical material distribution hopper (2) according to the temperature and quality of the slag after heat exchange in each steam jacket (1), and the control system adjusts the water inlet volume of each steam jacket (1) according to the steam temperature at the steam outlet, the flow rate at the water inlet and the water level in the heat exchange tubes of each steam jacket (1).

2. The slag waste heat recovery device with the functions of temperature reduction and steam generation according to claim 1, characterized in that The conical material distribution hopper (2) includes a material receiving port (201), and a conical material distribution inclined surface (205) with an integral structure is arranged in the material receiving port (201). A slag channel (202) with an integral structure is arranged at the bottom of the material receiving port (201), and the slag is shunted to each slag channel (202) through the material distribution inclined surface (205).

3. The slag waste heat recovery device with the functions of temperature reduction and steam generation according to claim 2, characterized in that, Slag channels (202) with an integral structure are arranged at equal intervals at the bottom of the material receiving port (201). Each slag channel (202) is inclined outward, and a material distribution flange (203) for connecting the corresponding steam jacket (1) is arranged at the bottom outlet of each slag channel (202). The bottom outlets of each slag channel (202) are matched with the inlets of the corresponding steam jackets (1).

4. The slag waste heat recovery device with the functions of temperature reduction and steam generation according to claim 1, characterized in that Electric valves are arranged at the inlets of the slag channels (202) of the conical material distribution hopper (2) to adjust the opening sizes of the slag channels (202).

5. The slag waste heat recovery device with the functions of temperature reduction and steam generation according to claim 1, characterized in that A support (204) is arranged at the bottom of the material distribution inclined surface (205) of the conical material distribution hopper (2). A material pushing rod (210) is arranged on the upper surface of the material distribution inclined surface (205). A rotating shaft (208) penetrates through the top of the material distribution inclined surface (205). The bottom of the rotating shaft (208) is connected to a motor (206) on the support (204). A limiting block (209) and a sliding block (207) are arranged on the upper part of the rotating shaft (208), and the limiting block (209) is located above the sliding block (207). The sliding block (207) is connected to each material pushing rod (210).

6. The slag waste heat recovery device with cooling and steam generation functions according to claim 1, characterized in that, Each steam jacket (1) is composed of a cylindrical steam heat exchanger. The steam heat exchanger includes multiple layers of heat exchange tubes (106) nested from the inside to the outside. The top of each layer of heat exchange tubes (106) is connected to an upper header (108) communicating with its interior, and the bottom of each layer of heat exchange tubes (106) is connected to a lower header (103) communicating with its interior. Adjacent upper headers (108) are connected by water pipes and internally communicated, and adjacent lower headers (103) are connected by water pipes and internally communicated.

7. The slag waste heat recovery device with the functions of cooling and steam generation according to claim 6, wherein, A diaphragm (104) is connected between two adjacent heat exchange tubes (106) in the outermost layer of each steam water jacket (1). Each heat exchange tube (106) in the outermost layer is provided with H-shaped fins (107) in the same direction, and each heat exchange tube (106) in the remaining layers is provided with H-shaped fins (107) in four directions with an included angle of 90°.

8. The slag waste heat recovery device with the functions of temperature reduction and steam generation according to claim 6, characterized in that, An upper flange (109) is provided at the top of the upper header (108) in the outermost circle of each steam water jacket (1). A multi-layer middle flange (105) is coaxially arranged outside the outermost heat exchange tubes (106). A lower flange (101) is provided at the bottom of the lower header (103) in the outermost circle. Uniformly distributed reinforcing ribs (102) are provided between the upper flange (109) and the adjacent middle flange (105), and between the lower flange (101) and the adjacent middle flange (105).

9. The slag waste heat recovery device with the functions of temperature reduction and steam generation according to claim 6, characterized in that, Each lower header (103) in the outermost circle of each steam water jacket (1) is provided with a water inlet (112) and a blowdown port (111). The upper header (108) in the outermost circle is provided with a steam outlet (110).

10. The slag waste heat recovery device with cooling and steam generation functions according to claim 1, characterized in that, A slag temperature sensor is installed at the slag outlet of each steam water jacket (1) to monitor the temperature of the slag after heat exchange. The slag after heat exchange in each steam water jacket (1) is transported by a conveyor belt. A mass sensor is installed on the conveyor belt to monitor the mass of the slag after heat exchange. According to the monitored slag temperature and slag mass, the control system adjusts the opening size of each slag channel (202) of the conical distributor (2), thereby adjusting the distribution speed. A water flow sensor is installed at the water inlet (112) of each steam water jacket (1) to monitor the water inflow of each steam water jacket (1). A steam temperature sensor is installed at the steam outlet (110) of each steam water jacket (1) to monitor the temperature of the steam after heat exchange. When the steam temperature exceeds or is lower than the set temperature value, the water pump connected to the water inlet (112) is adjusted through the control system to increase or decrease the water inflow, and reduce or increase the steam temperature. A liquid level sensor is installed in each heat exchange tube (106) of each steam water jacket (1) to monitor the water level in the heat exchange tube (106). When the water level in the heat exchange tube (106) is lower than the design value, the water pump connected to the water inlet (112) is adjusted through the control system to increase the water inflow.

Images