CN207438887U - Horizontal internal combustion stove pot separate assembling biomass semi-gasification boiler - Google Patents

Abstract

Horizontal internal combustion stove pot separate assembling biomass semi-gasification boiler, including：Biomass combustion furnace and heat exchange pot；Biomass combustion furnace is equipped with flange, is provided with one section of fume inlet passage on heat exchange pot, fume inlet passage is connected with the flue collector in heat exchange pot, and insulating layer is provided on fume inlet passage, and the end set of fume inlet passage has flange；The front end of heat exchange pot is provided with front smoke box, and rear end is provided with rear smoke box, and rear smoke box is divided into upper rear smoke box, lower rear smoke box by demarcation strip；Smoke box is connected with first time smoke pipe after lower, and insulating layer is provided on lower rear smoke box, and ash discharging hole is provided on the side wall of lower rear smoke box, and the end of lower rear smoke box is provided with access hole；The other end of first time smoke pipe is connected with front smoke box；Smoke box is connected with second time smoke pipe after upper, and the top of smoke box is provided with outlet flue after upper；The madial wall of the flue collector of the heat exchange pot is wavy shaped configuration.The boiler is easy to transportation and installation, good effect of heat exchange.

Description

Horizontal internal combustion boiler split combined biomass semi-gasification boiler

technical field

The utility model belongs to the field of biomass semi-gasification boilers, and in particular relates to a horizontal internal-combustion boiler split combined biomass semi-gasification boiler.

Background technique

The existing biomass semi-gasification furnace has the following defects: first, the boiler boiler is an integrated structure, and the transportation and installation of the boiler are inconvenient; second, the flue gas generated during fuel combustion passes through the main flue of the heat exchange pot and the first return flue pipe After being directly discharged from the front smoke box, the flue gas flow is short, the heat exchange effect is poor, and energy is wasted; the third is that the smoke pipe is prone to blockage after long-term use, and the smoke exhaust is not smooth, which affects heat exchange and is not easy to repair; During the material combustion process, the temperature in the boiler chamber of the burner and the flue gas temperature are uncontrollable. When the temperature in the furnace chamber is too high, the fuel is prone to slagging; when the flue gas temperature is too high, the Cl and alkali metal Na produced during fuel combustion , K directly lead to alkali metal corrosion on the rear heating surface.

Contents of the invention

The purpose of this utility model is to provide a horizontal internal combustion furnace-boiler split combined biomass semi-gasification boiler. The boiler completely separates the combustion furnace from the heat exchange pot. The problem is that the structure is simple, the combustion effect is good, and the heat exchange efficiency is high.

In order to achieve the above purpose, the utility model provides a horizontal internal combustion furnace-boiler split combined biomass semi-gasification boiler, which includes two parts: a biomass combustion furnace and a heat exchange pot; A flange is provided at the position where the heat exchange pot is connected to the biomass combustion furnace. A section of smoke inlet passage is provided at the end connected to the biomass combustion furnace. The smoke inlet passage communicates with the main flue in the heat exchange pot. The outer wall of the smoke inlet passage is provided with an insulation layer, the end of the smoke inlet passage is provided with a flange, and the biomass combustion furnace is connected with the heat exchange pot through bolts; the bottom of the heat exchange pot is provided with a water inlet , water outlet and sewage outlet; the front end of the heat exchange pot is provided with a front smoke box, the rear end of the heat exchange pot is provided with a rear smoke box, and the inside of the heat exchange pot is provided with multiple sets of return pipes; wherein the rear smoke box passes through The partition board is divided into the upper rear smoke box and the lower rear smoke box. The smoke from the main flue enters the lower rear smoke box first; the lower rear smoke box is connected with the first return smoke pipe, and the side of the lower rear smoke box There is an insulation layer on the wall, an ash discharge port is set on the side wall of the lower rear smoke box, and an inspection port is provided at the end of the lower rear smoke box corresponding to the main flue, through which the internal inspection of the heat exchange pot is realized. Maintenance; the first smoke return pipe is provided with at least one layer, and the first smoke return pipe is arranged uniformly along the circumference of the main flue, and the other end of the first smoke return pipe is connected with the front smoke box; the upper and rear smoke boxes are connected with the The second smoke pipe is connected, and the smoke from the front smoke box enters the upper and rear smoke box through the second smoke pipe, and a smoke outlet is arranged on the top of the upper and rear smoke box; a chimney is arranged on the smoke outlet; An induced draft fan is installed on the chimney; the inner wall of the main flue of the heat exchange pot is a wave-shaped structure; the biomass combustion furnace includes a furnace body, a first blower arranged on one side of the furnace body, and a The second blower at the top of the furnace body, the two thermocouples arranged on the furnace body, the reciprocating fire grate arranged at the bottom of the furnace body, and the PLC electronic control device for controlling the combustion of the biomass combustion furnace; wherein, one end of the furnace body is provided with A feed inlet, the feed inlet is connected with the feed mechanism, and a first air inlet is also provided on the feed inlet, and the first air inlet is connected with the first air blower through the first air inlet pipe; Two fire viewing ports are arranged on the side wall of the fire viewing port, and a second air inlet is respectively arranged on each fire viewing port, and the second air inlet is connected with the first air blower through the second air inlet pipe; in the combustion chamber of the furnace body Arrange at least two primary air inlets around, and the primary air inlets are connected with the second air blower through the primary air inlet pipe; a plurality of secondary air inlets are evenly arranged in the circumferential direction of the flue gas outlet of the furnace body , each secondary air inlet is respectively connected to the second blower through a secondary air inlet pipe; one of the thermocouples is arranged in the middle of the combustion chamber of the furnace body for detecting the temperature of the furnace body combustion chamber, and the other is arranged near The flue gas outlet is used to detect the flue gas temperature at the outlet; the first air inlet pipe, the second air inlet pipe, the primary air inlet pipe, and the secondary air inlet pipe are respectively provided with regulating valves, and the regulating valves Used to control the air intake; the PLC electric control device is electrically connected with the feeding mechanism, the first blower, the second blower, the regulating valve, and the thermocouple, and is used to control the feeding situation and control the air intake according to the temperature detected by the thermocouple.

As a preference of the present utility model, an ash outlet is provided on the side wall of the smoke inlet passage.

Advantage and positive effect of the utility model:

(1) The semi-gasification boiler provided by the utility model completely separates the biomass combustion furnace and the heat exchange pot, and first solves the combustion problem of the furnace, and then the heat transfer problem of the pot. It has a simple structure and is convenient for installation and transportation; The flue gas generated by the combustion of the material combustion furnace passes through the main flue, the first return pipe, and the second return pipe, and then is discharged from the rear smoke box, which increases the flue gas flow, increases energy utilization, and makes the heat exchange effect better.

(2) The semi-gasification boiler provided by the utility model has the inner wall of the main flue designed as a wavy structure. The flue gas that has just entered the heat exchange pot will contain some fine dust. When the flue gas first passes through the main flue Finally, the wave-shaped structure can preliminarily prevent part of the dust from entering the return pipe, effectively preventing the problem of blockage of the return pipe; at the same time, the boiler has an inspection port on the rear smoke box to facilitate maintenance of the boiler, and in the main flue The dust can be cleaned through the ash outlets at the front and rear ends of the heat exchange pot to further improve heat exchange efficiency.

(3) The semi-gasification boiler provided by the utility model monitors the temperature in the furnace and the temperature of the flue gas at all times by installing a thermocouple in the biomass combustion furnace, and adjusts the temperature inside the furnace and at the outlet of the flue gas in time according to the monitored temperature. The air volume makes the gasifier burn more fully without slagging and effectively avoids alkali metal corrosion on the heating surface.

(4) The semi-gasification boiler provided by the utility model is equipped with air inlets at the feed port and the fire viewing port respectively. By continuously blowing air into the furnace body, the feed material is safe, and the combustion situation inside the furnace body is clearly visible, which is convenient for grasping the combustion situation inside the furnace. .

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model combined biomass semi-gasification boiler.

Fig. 2 is an axial sectional view of the combustion chamber of the biomass combustion furnace of the utility model.

Fig. 3 is an axial sectional view of the flue gas outlet of the biomass combustion furnace of the utility model.

Reference signs: biomass combustion furnace 1, first blower 2, second blower 3, thermocouple 4, reciprocating grate 5, flange 6, regulating valve 7, furnace body 8, heat exchange pot 9, smoke inlet channel 10 , feed inlet 11, first air inlet pipe 12, fire viewing port 13, second air inlet pipe 14, combustion chamber 15, flue gas outlet 16, secondary air inlet pipe 17, main flue 91, water inlet 92, Water outlet 93, sewage outlet 94, front smoke box 95, rear smoke box 96, first smoke return pipe 97, second smoke return pipe 98, chimney 99, insulation layer 101, primary air inlet 151, secondary air inlet 161, Upper rear smoke box 961, lower rear smoke box 962, ash discharge port 9621, inspection port 9622.

Detailed ways

In order to make those skilled in the art clearly understand the technical solution and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings, but it is not used to limit the protection scope of the utility model.

Referring to Fig. 1, the horizontal internal-combustion furnace-boiler split combined biomass semi-gasification boiler provided by the utility model includes two parts: a biomass combustion furnace 1 and a heat exchange pot 9; wherein, the biomass combustion furnace 1 is The position of the gas outlet 16 is provided with a flange 6, and the end of the heat exchange pot 9 connected with the biomass combustion furnace 1 is provided with a section of smoke inlet passage 10 leaking outside, and the smoke inlet passage 10 is connected with the inside of the heat transfer pot. The main flue 91 communicates with the main flue 91, and an insulation layer 101 is provided on the outer wall of the smoke inlet passage 10, and a flange 6 is also provided at the end of the smoke inlet passage 10, and the biomass combustion furnace 1 and the heat exchange pot are connected by bolts. 9 are connected together; the bottom of the heat exchange pot 9 is provided with a water inlet 92, a water outlet 93 and a sewage outlet 94; the front end of the heat exchange pot 9 is provided with a front smoke box 95, and the rear end of the heat exchange pot is provided with a rear smoke There are multiple groups of smoke return pipes inside the heat exchange pot; wherein the rear smoke box 96 is divided into an upper rear smoke box 961 and a lower rear smoke box 962 through a partition plate, and the smoke coming out of the main flue 91 First enter the lower rear smoke box 962; the lower rear smoke box 962 communicates with the first smoke return pipe 97, and the side wall of the lower rear smoke box 962 is also provided with an insulating layer 101, which is arranged on the side wall of the lower rear smoke box 962. There is an ash discharge port 9621, and an inspection port 9622 is provided at the end of the lower rear smoke box 962 corresponding to the main flue 91, through which the inspection of the inside of the heat exchange pot can be realized; the first smoke return pipe 97 is at least One layer is set, the first smoke return pipe 97 is evenly distributed along the circumference of the main flue 91, and the other end of the first smoke return pipe 97 communicates with the front smoke box 95; the upper and rear smoke box 961 is connected with the second smoke return pipe 98 connected, the smoke from the front smoke box 95 enters the upper and rear smoke box 961 through the second smoke return pipe 98, and a smoke outlet is arranged on the top of the upper and rear smoke box 961; a chimney 99 is arranged on the smoke outlet ; The chimney 99 is equipped with an induced draft fan; the inner wall of the main flue 91 of the heat exchange pot is a wave-shaped structure.

The side wall of the smoke inlet channel may also be provided with an ash discharge port, and the main flue is cleaned of dust through the two ash discharge ports.

Referring to Figures 1 to 3, the biomass combustion furnace 1 includes a furnace body 8, a first blower 2 arranged on one side of the furnace body 8, a second blower 3 arranged at the top of the furnace body, two blowers arranged on the furnace body A thermocouple 4, a reciprocating fire grate 5 arranged at the bottom of the body of furnace, a PLC electric control device for controlling the combustion of the biomass combustion furnace; wherein, one end of the body of furnace is provided with a feed inlet 11, and the feed inlet 11 is connected to the furnace body. The feeding mechanism is connected, and a first air inlet is also provided on the feeding port, and the first air inlet is connected with the first blower 2 through the first air inlet pipe 12; two air inlets are arranged on the side wall of the furnace body. Fire viewing port 13, each viewing port is provided with a second air inlet respectively, and the second air inlet is connected with the first air blower 2 by the second air inlet pipe 14; Two primary air inlets 151, the primary air inlets 151 are connected to the second air blower 3 through the primary air inlet pipe; a plurality of secondary air inlets are evenly arranged in the circumferential direction of the flue gas outlet of the furnace body, Each secondary air inlet is connected with the second air blower 3 by secondary air inlet pipe 17 respectively; Described thermocouple 4 is arranged on the middle part of the combustion chamber 15 of body of heater, is used for detecting the temperature of body of furnace combustion chamber, controls furnace The maximum temperature of the body combustion chamber does not exceed 1000-1200°C, and the other is set at 16 near the flue gas outlet to detect the flue gas temperature at the exit. Generally, the flue gas temperature is controlled below 850°C. Straw-based biomass fuel, the flue gas outlet temperature is controlled at 700-750°C to ensure that no alkali metal corrosion occurs on the rear heating surface; the first air inlet pipe 12, the second air inlet pipe 14, the primary air inlet pipe, The secondary air inlet pipe 17 is respectively provided with a control valve 7, and the control valve 7 is used to control the air intake; Couple 4 is electrically connected, used to control the feeding situation and control the air intake according to the temperature detected by the thermocouple.

Claims (2)

1. Horizontal internal-combustion furnace-boiler split combined biomass semi-gasification boiler, including two parts: biomass combustion furnace and heat exchange pot; it is characterized in that: the position of the biomass combustion furnace at the flue gas outlet is set Flange, the heat exchange pot is provided with a smoke inlet channel at one end connected to the biomass combustion furnace, the smoke inlet channel communicates with the main flue in the heat exchange pot, and on the outer wall of the smoke inlet channel An insulation layer is provided, and the end of the smoke inlet channel is provided with a flange, and the biomass combustion furnace and the heat exchange pot are connected together by bolts; the bottom of the heat exchange pot is provided with a water inlet, a water outlet and a sewage outlet; The front end of the hot pot is provided with a front smoke box, the rear end of the heat exchange pot is provided with a rear smoke box, and the inside of the heat exchange pot is provided with multiple sets of smoke return pipes; wherein the rear smoke box is divided into upper and rear smoke boxes through a partition plate. smoke box, the lower rear smoke box, the flue gas from the main flue first enters the lower rear smoke box; The side wall of the rear smoke box is provided with an ash outlet, and an inspection port is provided at the end of the lower rear smoke box corresponding to the main flue, through which the inspection of the inside of the heat exchange pot can be realized; the first return smoke There is at least one layer of smoke pipes, the first smoke return pipe is arranged along the circumference of the main flue, and the other end of the first smoke return pipe communicates with the front smoke box; the upper and rear smoke boxes communicate with the second smoke return pipe, from the front The smoke from the smoke box enters the upper and rear smoke box through the second return pipe, and a smoke outlet is arranged on the top of the upper and rear smoke box; a chimney is arranged on the smoke outlet; an induced draft fan is installed on the chimney The inner wall of the main flue of the heat exchange pot is a wave-shaped structure; the biomass combustion furnace includes a furnace body, a first blower arranged on one side of the furnace body, a second blower arranged on the top of the furnace body, Two thermocouples on the furnace body, a reciprocating fire grate arranged at the bottom of the furnace body, and a PLC electronic control device for controlling the combustion of the biomass combustion furnace; wherein, one end of the furnace body is provided with a feed port, and the feed The inlet is connected with the feeding mechanism, and the first air inlet is also provided on the inlet, and the first air inlet is connected with the first blower through the first air inlet pipe; two Each fire viewing port is provided with a second air inlet respectively, and the second air inlet is connected with the first air blower through a second air inlet pipe; at least two primary air inlets are arranged around the combustion chamber of the furnace body. The air inlet, the primary air inlet is connected with the second air blower through the primary air inlet pipe; a plurality of secondary air inlets are evenly distributed in the circumferential direction of the flue gas outlet of the furnace body, and each secondary air inlet is respectively It is connected to the second blower through the secondary air inlet pipe; one of the thermocouples is set in the middle of the combustion chamber of the furnace body to detect the temperature of the combustion chamber of the furnace body, and the other is set near the flue gas outlet to detect The flue gas temperature at the outlet; the first air inlet pipe, the second air inlet pipe, the primary air inlet pipe, and the secondary air inlet pipe are respectively provided with regulating valves, and the regulating valves are used to control the air intake; The PLC electric control device is electrically connected with the feeding mechanism, the first blower, the second blower, the regulating valve and the thermocouple, and is used to control the feeding situation and control the air intake according to the temperature detected by the thermocouple. 2. The horizontal internal-combustion boiler split combined biomass semi-gasification boiler according to claim 1, characterized in that: the side wall of the smoke inlet channel is provided with an ash outlet.