Heat accumulating type fly ash gasification melting furnace
By introducing heat storage components and a water pump system into the fly ash gasification melting furnace, the problem of heat waste caused by low combustion temperature was solved, and the effective solidification of heavy metals in fly ash and the recycling of thermal energy were realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, the incineration temperature of incinerators is relatively low, which results in the failure of heavy metals in fly ash to be effectively solidified, and the heat released from gas combustion and fly ash melting is difficult to be effectively utilized, resulting in heat waste.
A regenerative fly ash gasification and melting furnace was designed. By setting up a heat storage component inside the furnace, the gas injection is used to assist combustion and melt the fly ash. Heat is absorbed by the heat storage ring, and the solution in the hot water tank is used by the water pump to absorb heat, so as to realize the storage and reuse of thermal energy.
This method achieves effective solidification of heavy metals in fly ash and recycling of thermal energy, improving the solidification efficiency of heavy metals and reducing heat waste.
Smart Images
Figure CN224072981U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fly ash treatment technology, specifically a regenerative fly ash gasification and melting furnace. Background Technology
[0002] Currently, in large-scale municipal solid waste incineration lines, the incineration temperature is relatively low, often only 800-1000℃. As a result, the ash residue from these incinerators cannot effectively solidify heavy metals and still exhibits leaching toxicity. High-temperature melting furnaces are used to incinerate and melt hazardous waste or ash residue. This melting technology involves melting fly ash at high temperatures of 1300-1600℃, encapsulating and solidifying the heavy metals in the fly ash to form a rigid, amorphous glassy substance. After melting, organic matter such as dioxins in the fly ash is completely decomposed and destroyed by heat, reducing the leaching rate of heavy metals and significantly increasing the density, with a fly ash volume reduction rate exceeding 60%.
[0003] Conventional furnaces use gas to melt fly ash. After melting, the fly ash settles at the bottom of the furnace, awaiting processing in the next step. However, the radiant heat from the combustion of gas and the heat released from the melting of fly ash are usually discharged, making it difficult to utilize the heat. To address this issue, a regenerative fly ash gasification melting furnace is proposed. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a regenerative fly ash gasification and melting furnace, which has the advantages of heat storage and utilization, thus solving the aforementioned problems.
[0006] (II) Technical Solution
[0007] To achieve the aforementioned purpose of heat storage and utilization, this utility model provides the following technical solution: a regenerative fly ash gasification melting furnace, comprising a base, a furnace body fixedly installed on the top of the base, a furnace cover detachably installed on the top of the furnace body, fly ash inlets fixedly installed on both sides of the top of the furnace cover, a flue gas exhaust pipe fixedly installed at the center of the top of the furnace cover, a gas nozzle embedded in the outer wall of the furnace body, the other end of the gas nozzle being connected to a gas supply device through a gas pipeline, a melt discharge pipe fixedly installed on the top of the furnace body, a control valve A fixedly installed on the outer side of the melt discharge pipe, a cavity opened inside the furnace body, a heat storage component disposed inside the cavity, and an overflow nozzle fixedly installed on the outside of the furnace body.
[0008] Preferably, the heat storage component includes a water inlet pipe, a heat storage ring is fixedly installed at one end of the water inlet pipe, there are several heat storage rings stacked one on top of the other, the bottom heat storage ring is connected to the water outlet pipe at one end, and a control valve B and an electronic thermometer are fixedly installed on the outside of the water outlet pipe.
[0009] Preferably, the other end of the outlet pipe is connected to the hot water tank, the other end of the inlet pipe is connected to the water pump, a filter is fixedly installed on the pump's pumping end, and the filter is connected to an external water pipe.
[0010] Preferably, the control valve A, water pump, filter, control valve B, and electronic thermometer are all connected to the PLC controller via signal connection.
[0011] (III) Beneficial Effects
[0012] Compared with the prior art, this utility model provides a regenerative fly ash gasification and melting furnace, which has the following beneficial effects:
[0013] In this regenerative fly ash gasification melting furnace, fly ash enters the furnace body through a fly ash inlet, and gas is injected through a gas nozzle to aid combustion and melting. After the fly ash is melted, it is deposited in the furnace body, and the heat from combustion is transferred to the heat storage components. After the heat storage ring absorbs heat, the temperature of the solution inside it increases. The temperature of the melt is detected by an electronic thermometer. Then, a water pump is used to draw external solution into the heat storage ring to absorb heat. The melt that is squeezed out is stored and utilized in a hot water tank, thereby realizing the storage and utilization of thermal energy in the melting furnace. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the rear structure of the present invention;
[0016] Figure 3 This is a cross-sectional structural diagram of the present invention;
[0017] Figure 4 This is an exploded structural diagram of the present invention;
[0018] Figure 5 This is a schematic diagram of the structure of the heat storage component of this utility model.
[0019] In the diagram: 1. Base; 2. Furnace body; 3. Furnace cover; 4. Fly ash inlet; 5. Flue gas exhaust pipe; 6. Gas nozzle; 7. Gas pipeline; 8. Melt discharge pipe; 9. Control valve A; 10. Cavity; 11. Heat storage component; 12. Overflow outlet; 13. Hot water tank; 14. Water pump; 15. Filter; 16. Control valve B; 17. Electronic thermometer; 101. Water inlet pipe; 102. Heat storage ring; 103. Water outlet pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-3 A regenerative fly ash gasification and melting furnace includes a base 1, a furnace body 2 fixedly installed on the top of the base 1, a furnace cover 3 detachably installed on the top of the furnace body 2, fly ash inlets 4 fixedly installed on both sides of the top of the furnace cover 3 for introducing fly ash; and a flue gas exhaust pipe 5 fixedly installed at the center of the top of the furnace cover 3 for guiding the combustion flue gas to the processor.
[0022] Please see Figure 1-3 The outer wall of the furnace body 2 is fitted with a gas nozzle 6, and the other end of the gas nozzle 6 is connected to the gas supply equipment through a gas pipe 7 to use gas to assist in the combustion of fly ash. A melt discharge pipe 8 is fixedly installed on the top of the furnace body 2, and a control valve A9 is fixedly installed on the outside of the melt discharge pipe 8. A cavity 10 is opened inside the furnace body 2, and a heat storage component 11 is installed inside the cavity 10 to absorb the heat after the fly ash melts. An overflow nozzle 12 is fixedly installed on the outside of the furnace body 2 to discharge the floating residue of fly ash.
[0023] Please see Figure 4-5 The heat storage component 11 includes an inlet pipe 101, a heat storage ring 102 is fixedly installed at one end of the inlet pipe 101, and a number of heat storage rings 102 are stacked one on top of the other. The bottom heat storage ring 102 is connected to an outlet pipe 103 at one end. A control valve B16 and an electronic thermometer 17 are fixedly installed on the outside of the outlet pipe 103 for measuring the temperature of the solution in the pipe.
[0024] Please see Figure 4-5The other end of the outlet pipe 103 is connected to the hot water tank 13, and the other end of the inlet pipe 101 is connected to the water pump 14. A filter 15 is fixedly installed at the pump end of the water pump 14, and the filter 15 is connected to the external water pipe. The water pump 14 draws external water into the heat storage ring 102 to absorb heat, and at the same time, it can squeeze the original hot melt liquid into the hot water tank 13 for storage.
[0025] Please see Figure 1-5 Control valve A9, water pump 14, filter 15, control valve B16, and electronic thermometer 17 are all connected to the PLC controller signal.
[0026] Working principle: During use, fly ash enters the furnace body 2 through the fly ash inlet 4, and gas is injected by the gas nozzle 6 to assist combustion and melting. After the fly ash is melted, it is deposited in the furnace body 2. The heat of combustion is transferred to the heat storage component 11. After the heat storage ring 102 absorbs heat, the temperature of the solution inside it increases. The temperature of the melt is detected by the electronic thermometer 17. Then, the water pump 14 draws the external solution into the heat storage ring 102 to absorb heat. The melt that is squeezed out enters the hot water tank 13 for storage and utilization, thereby realizing the storage and utilization of the thermal energy of the melting furnace.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A heat accumulating fly ash gasification melting furnace, comprising a base (1), a furnace body (2) fixedly installed on the top of the base (1), and a furnace cover (3) detachably installed on the top of the furnace body (2), characterized in that: The top of the furnace cover (3) is fixedly installed with fly ash into the mouth (4), the top of the furnace cover (3) is fixedly installed with flue gas exhaust pipe (5), the outer wall of the furnace body (2) is embedded with gas nozzle (6), the other end of the gas nozzle (6) is communicated with gas supply equipment through gas pipeline (7), the top of the furnace body (2) is fixedly installed with molten liquid discharge pipe (8), the outer side of the molten liquid discharge pipe (8) is fixedly installed with control valve A (9), the inside of the furnace body (2) is provided with cavity (10), the inside of the cavity (10) is provided with heat storage assembly (11), the outside of the furnace body (2) is fixedly installed with overflow nozzle (12).
2. A regenerative fly ash gasification melter furnace as claimed in claim 1, wherein: The heat storage assembly (11) comprises a water inlet pipe (101), one end of the water inlet pipe (101) is fixedly installed with a heat storage ring (102), the number of the heat storage ring (102) is several, which are arranged in an upper and lower stacking manner, one end of the lowermost heat storage ring (102) is communicated with a water outlet pipe (103), the outer side of the water outlet pipe (103) is fixedly installed with control valve B (16) and electronic temperature gauge (17) respectively.
3. A regenerative fly ash gasification melter furnace as claimed in claim 2, wherein: The other end of the water outlet pipe (103) is communicated with the hot water tank (13), the other end of the water inlet pipe (101) is communicated with the water pump (14), the water pumping end of the water pump (14) is fixedly installed with the filter (15), the filter (15) is communicated with the external water pipe.
4. A regenerative fly ash gasification melter furnace as claimed in claim 3 wherein: The control valve A (9), the water pump (14), the filter (15), the control valve B (16) and the electronic temperature gauge (17) are signal connected with the PLC controller.