Horizontal biomass steam boiler

Abstract

The embodiment of the utility model particularly discloses a horizontal biomass steam boiler which comprises a boiler body, a boiler cover and a boiler cover. The boiler body comprises a boiler barrel and a coal economizer, and the coal economizer is arranged in the boiler barrel. The boiler wall is annular, and a hearth is defined by the boiler wall and located below the boiler barrel; the other end of the flue is connected with a smoke outlet of the hearth; the combustion equipment is a platform provided with a vertically-through through hole, is arranged at the bottom of the hearth and divides the hearth into an upper combustion chamber and a lower air inlet chamber; one end of the economizer is connected with the right end of the economizer, and the other end is connected with the induced draft fan through the flue; an air outlet of the air blower is communicated with the air inlet chamber; a water outlet of the water feeding pump is communicated with one end of a water inlet pipe, the other end of the water inlet pipe is communicated with a water inlet of a water pipe in the energy saver, and a water outlet of the water pipe in the energy saver is communicated with the boiler barrel; an opening of the feeding machine faces upwards, and the outlet end of the feeding channel is communicated with the combustion chamber; the material spreading fan is arranged at the end, away from the combustion chamber, of the feeding channel, and an air outlet of the material spreading fan communicates with the feeding channel.

Description

Technical Field

[0001] This application relates to the technical field of steam boilers, and particularly to a horizontal biomass steam boiler. Background Art

[0002] With the increasingly severe global energy crisis and environmental problems, the use of traditional fossil fuels has been increasingly restricted. Biomass energy, as a renewable, low-carbon, and environmentally friendly energy form, has gradually attracted people's attention and emphasis. As one of the important devices for biomass energy utilization, biomass steam boilers have broad application prospects in industrial production, heating, and other fields.

[0003] However, there are still some problems in the existing biomass steam boiler technology during the design, manufacturing, and use processes, including insufficient heat insulation performance of the boiler body, low heat utilization rate, and incomplete combustion of biomass fuels. Summary of the Invention

[0004] The purpose of this application is to provide a horizontal biomass steam boiler to solve the problems of insufficient heat insulation performance of the boiler body, low heat utilization rate, and incomplete combustion of biomass fuels in the existing biomass steam boilers.

[0005] To achieve the above purpose, the embodiments of this application provide a horizontal biomass steam boiler, including: a boiler body, a flue, a furnace wall, a combustion device, an economizer, an induced draft fan, a blower, a feed water pump, a feeder, and a spreading fan. Among them,

[0006] The boiler body includes a drum and an economizer, and the economizer is arranged inside the drum;

[0007] The furnace wall is annular and encloses a furnace chamber, and the furnace chamber is located below the drum;

[0008] One end of the flue is connected to the left end of the economizer, and the other end is connected to the smoke outlet of the furnace chamber;

[0009] The combustion device is a platform with a through hole penetrating up and down, which is arranged at the bottom of the furnace chamber and divides the furnace chamber into an upper combustion chamber and a lower air inlet chamber;

[0010] One end of the economizer is connected to the right end of the economizer, and the other end is connected to the induced draft fan through a flue and air duct;

[0011] The air outlet of the blower is communicated with the air inlet chamber;

[0012] The water outlet of the feed water pump is communicated with one end of the water inlet pipe, the other end of the water inlet pipe is communicated with the water inlet of the water pipe in the economizer, and the water outlet of the water pipe in the economizer is communicated with the drum;

[0013] The opening of the feeder faces upward, and the outlet end of the feeding channel is communicated with the combustion chamber;

[0014] The spreading fan is arranged at one end of the feeding channel far from the combustion chamber, and the air outlet of the spreading fan is communicated with the feeding channel.

[0015] Optionally, it further includes:

[0016] The front smoke box is arranged at the left end of the boiler body, below the highest fire boundary. The two ends of the front smoke box are respectively communicated with the left end of the economizer and the flue. The inside of the front smoke box is equipped with a flue gas deflector.

[0017] Optionally, it further includes:

[0018] The outer casing wraps the outside of the boiler drum and the furnace. The material is a heat-insulating material, including at least one of rock wool, glass wool, silicate, aerogel, polyurethane foam and polystyrene foam.

[0019] Optionally, it further includes:

[0020] The platform ladder is arranged on one side of the boiler body, the lower end is connected to the base, and the upper end extends above the boiler drum.

[0021] Optionally, it further includes:

[0022] The pipeline instrument valve is arranged at the upper end of the boiler drum, and includes a pressure gauge socket, a safety valve socket, a main steam valve and a secondary steam valve.

[0023] Optionally, it further includes:

[0024] The rear smoke box is arranged at the right end of the boiler body, below the highest fire boundary. The two ends of the rear smoke box are respectively communicated with the right end of the economizer and the economizer. The inside of the rear smoke box is equipped with a flue gas deflector.

[0025] Optionally, it further includes:

[0026] The dust collector, the air inlet of the dust collector is communicated with the air outlet of the induced draft fan.

[0027] Optionally, it further includes:

[0028] The electric control cabinet is provided with a PLC programmable controller electrically connected to the motors of the induced draft fan, the blower, the feed water pump, the feeder and the spreading fan, and is used to control the induced draft fan, the blower, the feed water pump, the feeder and the spreading fan.

[0029] Optionally, a fuel crushing device is arranged below the opening of the feeder, and the lower part of the fuel crushing device is communicated with the inlet end of the feeding channel;

[0030] The fuel crushing device includes a feed hopper, a conveying device, and a crushing mechanism. Among them, the feed hopper is in communication with the opening of the feeder. The conveying device is located below the feed hopper and adopts a chain plate type feed trough or a belt conveyor. The crushing mechanism is located at the end of the conveying device and includes a crushing knife roll, a screen, and a bottom knife. Alloy cutting heads or cutting blades or impact cutting heads are installed on the crushing knife roll. The screen is located below the crushing knife roll, and the bottom knife is arranged below the screen and cooperates with the cutting heads on the crushing knife roll.

[0031] Optionally, it further includes:

[0032] A base, which is arranged on the foundation, and the boiler body is erected above it.

[0033] The embodiments of the present application have the following advantages:

[0034] Compared with the prior art, the horizontal biomass steam boiler provided by the above technical solution optimizes the thermal insulation design of the boiler body, selects high-performance thermal insulation materials and thermal insulation layer structures, reduces heat loss during the operation of the boiler, and improves energy utilization efficiency; by improving the design of the combustion equipment and optimizing the structure of the combustion chamber and the ventilation system of the air inlet chamber, it ensures that the biomass fuel can be fully burned, reduces the emission of soot and harmful gases, and improves the environmental protection performance of the boiler; by setting a feeder and a spreading fan, it realizes precise feeding and uniform spreading, improves the operation stability and combustion efficiency of the boiler; provides a more efficient, energy-saving, environmentally friendly and safe horizontal biomass steam boiler technical solution to meet the market demand and promote the development of the biomass energy industry. Description of the Drawings

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0036] Figure 1 The front view of a horizontal biomass steam boiler provided for at least one embodiment of the present application;

[0037] Figure 2 The side view of a horizontal biomass steam boiler provided for at least one embodiment of the present application;

[0038] Figure 3 The top view of a horizontal biomass steam boiler provided for at least one embodiment of the present application. Detailed Embodiments

[0039] The following specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope protected by the present application.

[0040] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0041] In addition, the technical features involved in different implementation manners of the present application described below can be combined with each other as long as they do not conflict with each other.

[0042] The embodiment of the present application provides a horizontal biomass steam boiler. Refer to Figures 1 to 3 , including:

[0043] A boiler body 1, a flue, a furnace wall 5, a combustion device 7, an economizer 10, an induced draft fan 13, a blower 15, a feed water pump 16, a feeder 18, and a material spreading fan 19, where:

[0044] The boiler body 1 mainly includes components such as a drum and an economizer. The drum is used for storing water and separating steam and water. The economizer is arranged inside the drum to preheat the boiler feed water using the waste heat of the flue gas. A liquid level gauge is also provided at one end of the drum;

[0045] Specifically, the drum is made of high-strength low-alloy steel and is internally provided with an efficient steam-water separation device, such as a combination of a corrugated plate separator and an equalizing orifice plate, to ensure the steam quality. A heat insulation layer is added outside the drum to reduce heat loss. The liquid level gauge selects a high-precision magnetic flap liquid level gauge and is equipped with a high and low water level alarm device to ensure safe operation.

[0046] Specifically, the economizer is designed as a spiral fin type to increase the heat exchange area. Meanwhile, it is made of corrosion-resistant materials to extend its service life. An ash cleaning device is provided inside to automatically remove the accumulated ash regularly and maintain high heat exchange efficiency.

[0047] The furnace wall 5 is annular and encloses the furnace. The furnace is located below the drum and is used to burn fuel in the furnace to heat the boiler body 1. In some embodiments, a heat-insulating layer is laid on the outer side of the furnace wall 5. In some embodiments, the heat-insulating layer is made of heat-insulating materials and includes a reflective layer (such as aluminum foil) to reduce radiant heat transfer, and a protective layer (such as a metal plate, glass cloth, etc.) to protect the heat-insulating materials from external damage.

[0048] One end of the flue is connected to the left end of the economizer through the front smoke box 2, and the other end is connected to the smoke outlet of the furnace.

[0049] Specifically, the inner wall of the flue is coated with wear-resistant ceramics to reduce ash accumulation and corrosion. Temperature monitoring points are set at key positions of the flue to monitor the flue gas temperature in real time and ensure the safety of the system.

[0050] The combustion device 7 is a platform with a through hole running through it up and down. It is arranged at the bottom of the furnace and divides the furnace into an upper combustion chamber and a lower air inlet chamber.

[0051] Specifically, the combustion platform is designed to be adjustable, and the size of the through hole can be adjusted according to the combustion characteristics of different biomass fuels to optimize the combustion process. The inner wall of the combustion chamber is lined with refractory materials to improve the high-temperature resistance performance.

[0052] One end of the economizer 10 is connected to the right end of the economizer through the rear smoke box 9, and the other end is connected to the induced draft fan 13 through the flue and air duct 12.

[0053] Specifically, the economizer 10 is designed as a shell-and-tube heat exchanger to further heat the boiler feed water using waste heat and improve the overall thermal efficiency of the system.

[0054] The induced draft fan 13 is arranged at one end of the flue and air duct 12 far from the economizer 10, and the air inlet of the induced draft fan 13 is communicated with the flue and air duct 12.

[0055] The air outlet of the blower 15 is communicated with the air inlet chamber.

[0056] The water outlet of the feed water pump 16 is communicated with one end of the water inlet pipe. The other end of the water inlet pipe is communicated with the water inlet of the water pipe in the economizer 10, and the water outlet of the water pipe in the economizer 10 is communicated with the drum.

[0057] Specifically, a variable frequency speed regulation feed water pump 16 is selected to automatically adjust the feed water volume according to the drum water level to keep the water level stable. Pressure gauges and flow meters are set on the feed water pipeline to monitor the feed water pressure and flow rate in real time.

[0058] The opening of the feeder 18 faces upward, and the outlet end of the feeding channel communicates with the combustion chamber.

[0059] Specifically, the feeder 18 adopts variable frequency control and automatically adjusts the feeding amount according to the boiler load. In some embodiments, a fuel crushing device is arranged below the opening of the feeder 18 to reduce the fuel particle size and promote full combustion. The lower part of the fuel crushing device communicates with the inlet end of the feeding channel.

[0060] Specifically, the fuel crushing device includes a feed hopper, a conveying device, and a crushing mechanism.

[0061] The feed hopper is located above the fuel crushing device and is used to receive the biomass fuel falling from the feeder 18. The feed hopper is designed with a sufficient opening area to ensure the smooth entry of the fuel.

[0062] The conveying device adopts a chain plate type feeding trough or a belt conveyor to evenly convey the fuel in the feed hopper into the crusher cavity.

[0063] The crushing mechanism includes a crushing knife roll, a screen, and a bottom knife. The crushing knife roll is the core component of the crushing device. Alloy knife heads or specially designed cutting blades and impact knife heads are installed on the crushing knife roll. The knife heads have good rigidity and wear resistance to meet the crushing requirements of biomass fuel. The rotational speed of the knife roll is designed to be high to improve the crushing efficiency. The screen is located below the crushing knife roll and is used to screen the crushed fuel particles to ensure that the crushing particle size meets the requirements. The design of the screen should consider easy replacement so that it can be quickly replaced after wear to reduce the downtime. The screen material should be selected as steel that is resistant to impact and wear. The bottom knife is arranged below the screen and cooperates with the knife heads on the crushing knife roll to further crush the larger fuel particles. The design of the bottom knife should ensure an appropriate gap with the knife roll to avoid blockage.

[0064] The spreading fan 19 is arranged at one end of the feeding channel far from the combustion chamber, and the air outlet of the spreading fan 19 communicates with the feeding channel;

[0065] Specifically, the spreading fan 19 is used to ensure that the fuel is evenly spread into the combustion chamber and improve the combustion efficiency.

[0066] In some embodiments, it further includes: a front smoke box 2, which is arranged at the left end of the boiler body 1 and below the highest fire boundary. The two ends of the front smoke box 2 are respectively communicated with the left end of the economizer and the flue. The front smoke box 2 is a transition section and is internally equipped with a flue gas deflector for guiding the high-temperature flue gas to smoothly enter the economizer from the flue;

[0067] Specifically, both the front and rear smoke boxes 9 are designed as streamlined structures, and the flue gas deflectors installed inside are made of wear-resistant and high-temperature-resistant materials to accurately guide the flue gas flow direction, reduce eddy currents and resistance, and improve the heat energy recovery efficiency.

[0068] In some embodiments, it further includes: a base 3, which is arranged on the foundation 11, and the boiler body 1 is erected above it.

[0069] In some embodiments, it further includes: an outer casing 4, the material of which is a heat-insulating material, which wraps the outside of the drum and the furnace, playing a heat-insulating role. In some embodiments, the heat-insulating material includes: rock wool, glass wool, silicate, aerogel, polyurethane foam, polystyrene foam, etc. These materials have good heat-insulating and heat-preserving properties and can effectively reduce heat transfer.

[0070] In some embodiments, it further includes: a platform and ladder 6, which is arranged on one side of the boiler body 1, the lower end of which is connected to the base 3, and the upper end extends above the drum.

[0071] In some embodiments, it further includes: pipeline instrument valves 8, which are arranged at the upper end of the drum, including a pressure gauge seat, a safety valve seat, a main steam valve, and a secondary steam valve;

[0072] Specifically, a safety valve is used to be arranged on the safety valve seat to ensure that steam is automatically released when the pressure exceeds the limit, guaranteeing the safety of the boiler. A pressure gauge is used to be arranged on the pressure gauge seat, and the main steam valve and the secondary steam valve are used to connect the steam transmission pipeline.

[0073] In some embodiments, it further includes: a rear smoke box 9, which is arranged at the right end of the boiler body 1, below the highest fire boundary. The two ends of the rear smoke box 9 are respectively communicated with the right end of the economizer and the energy saver 10, and a flue gas deflector is installed inside, which is used to guide the flue gas to smoothly enter the energy saver 10 from the economizer.

[0074] In some embodiments, it further includes: a foundation 11, which is used to provide support for the base 3.

[0075] In some embodiments, it further includes: a flue and air duct 12, one end of which is connected to the energy saver 10, and the other end is connected to the induced draft fan 13;

[0076] Specifically, the flue and air duct 12 is designed to be of low resistance type, reducing the wind resistance loss and ensuring the efficient operation of the induced draft fan 13.

[0077] In some embodiments, it further includes: a dust collector 14, the air inlet of which is communicated with the air outlet of the induced draft fan 13;

[0078] Specifically, the dust collector 14 is selected as a bag filter 14 or a cyclone dust collector 14. The cyclone dust collector 14 is composed of a cylinder body, a cone, an inner cylinder body, an air inlet pipe, an exhaust pipe, etc. The dust-containing gas is introduced between the outer shell of the dust collector 14 and the exhaust pipe from the inlet, forming a rotating downward outer swirl. The dust is separated and discharged under the action of centrifugal force, and the purified gas is discharged through the exhaust pipe. The bag filter 14 is composed of bags, a shell, a hopper, a dust discharging device, a support, a pulse cleaning system, etc. After the dust-containing gas enters the dust collector 14, the dust is trapped on the outer surface of the bags through the filtering action of the bags, and the purified gas is discharged through the clean room above the bag chamber. The collected dust is discharged through the dust discharging device.

[0079] In some embodiments, differential pressure monitoring devices are arranged before and after the dust collector 14 to timely clean the accumulated ash and maintain the dust removal efficiency.

[0080] In some embodiments, it further includes: an electric control cabinet 17 for controlling the operation of the induced draft fan 13, the blower 15, the feed water pump 16, the feeder 18, and the spreading fan 19.

[0081] In some embodiments, the electric control cabinet 17 adopts a PLC programmable controller and integrates a touch screen operation interface to realize the automatic control of devices such as the induced draft fan 13, the blower 15, the feed water pump 16, the feeder 18, and the spreading fan 19. A fault self-diagnosis and alarm system is set up to ensure the safe operation of the boiler.

[0082] In some embodiments, the electric control cabinet 17 is also provided with a circuit breaker: used for distributing electric energy and automatically cutting off the circuit when faults such as overload and short circuit occur in the circuit; a contactor: used for switching on and off the main circuit and controlling the closing and opening of the contacts through an electromagnetic mechanism; a thermal relay: using the principle of thermal effect generated by current passing through the element to automatically cut off the circuit when overload occurs in the circuit; an intermediate relay: used for changing one input signal into multiple output signals or amplifying the signal to realize the logical control of the circuit; buttons and indicator lights: used for manually controlling the on and off of the circuit and indicating the working state of the circuit; a universal conversion switch and a travel switch: used for realizing various function switches and position detection of the circuit.

[0083] In summary, compared with the prior art, the horizontal biomass steam boiler provided by the above technical solution optimizes the heat insulation design of the boiler body, selects high-performance heat insulation materials and heat insulation layer structures, reduces heat loss during the operation of the boiler, and improves energy utilization efficiency; by improving the design of the combustion equipment and optimizing the structure of the combustion chamber and the ventilation system of the air inlet chamber, it ensures that the biomass fuel can be fully burned, reduces the emissions of soot and harmful gases, and improves the environmental protection performance of the boiler; by setting a feeder and a spreading fan, it realizes accurate feeding and uniform spreading, improves the operation stability and combustion efficiency of the boiler; provides a more efficient, energy-saving, environmentally friendly and safe horizontal biomass steam boiler technical solution to meet the market demand and promote the development of the biomass energy industry.

[0084] Note that unless otherwise directly stated, all features disclosed in this specification (including any appended claims, abstract and drawings) can be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise clearly stated, each disclosed feature is only an example of a group of equivalent or similar features. In the cases where it is used, further, preferably, furthermore and more preferably are simply the starting points for elaborating another embodiment based on the foregoing embodiment. The content following the further, preferably, furthermore or more preferably in combination with the foregoing embodiment constitutes the complete composition of another embodiment. The components formed by any arbitrary combination among several further, preferably, furthermore or more preferably settings following the same embodiment form another embodiment.

[0085] In the implementation of functions and steps, the corresponding functions and steps in each embodiment can also occur in a different order from that shown. For example, two consecutive functions and steps can actually be executed or implemented substantially in parallel, and sometimes they can also be executed or implemented in the reverse order, depending on the functions involved.

[0086] Although the present application has been described in detail with general descriptions and specific embodiments above, on the basis of the present application, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present application fall within the scope of protection required by the present application.

Claims

1. A horizontal biomass steam boiler, characterized in that: include: Boiler body, flue, furnace wall, combustion equipment, economizer, induced draft fan, blower, feed pump, feeder, broadcast fan, among which, The boiler body comprises a boiler drum and an economizer, and the economizer is arranged inside the boiler drum; The furnace wall is annular and surrounds a furnace, and the furnace is located below the boiler drum; One end of the flue is connected to the left end of the economizer, and the other end is connected to the smoke outlet of the furnace; The combustion device is a platform with through holes extending vertically, arranged at the bottom of the furnace, and dividing the furnace into an upper combustion chamber and a lower air intake chamber; One end of the energy saver is connected to the right end of the economizer, and the other end is connected to the induced draft fan through the smoke and air duct; The air outlet of the blower is communicated with the air inlet chamber; The water outlet of the water feed pump is connected to one end of the water inlet pipe, the other end of the water inlet pipe is connected to the water inlet of the water pipe in the economizer, and the water outlet of the water pipe in the economizer is connected to the boiler drum; The opening of the feeder faces upward, and the outlet end of the feed channel is communicated with the combustion chamber; The material broadcasting fan is arranged at one end of the material feeding channel away from the combustion chamber, and the air outlet of the material broadcasting fan is communicated with the material feeding channel.

2. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: The front smoke box is arranged at the left end of the boiler body and below the highest fire boundary. The two ends of the front smoke box are respectively connected to the left end of the economizer and the flue. A smoke guide plate is installed inside the front smoke box.

3. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: The outer sheath is wrapped around the outside of the boiler drum and the furnace, and is made of thermal insulation material, including at least one of rock wool, glass wool, silicate, aerogel, polyurethane foam and polystyrene foam.

4. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: The platform ladder is arranged on one side of the boiler body, the lower end of the platform ladder is connected to the base, and the upper end extends to the top of the boiler drum.

5. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: The pipeline instrument valve is arranged at the upper end of the boiler drum, and includes a pressure gauge pipe seat, a safety valve pipe seat, a main steam valve, and an auxiliary steam valve.

6. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: The rear smoke box is arranged at the right end of the boiler body and below the highest fire boundary. The two ends of the rear smoke box are respectively connected to the right end of the economizer and the energy saver. A flue gas guide plate is installed inside the rear smoke box.

7. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: A dust collector, wherein the air inlet of the dust collector is connected to the air outlet of the induced draft fan.

8. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: An electric control cabinet is provided with a PLC programmable controller electrically connected to the motors of the induced draft fan, blower, water pump, feeder and broadcasting fan, and is used to control the induced draft fan, blower, water pump, feeder and broadcasting fan.

9. The horizontal biomass steam boiler according to claim 1, characterized in that: A fuel crushing device is provided below the opening of the feeder, and the lower part of the fuel crushing device is connected with the inlet end of the feed channel; The fuel crushing device includes a feed hopper, a conveying device and a crushing mechanism, wherein the feed hopper is connected to the opening of the feeder, the conveying device is located below the feed hopper, and a chain plate feed trough or a belt conveyor is used, and the crushing mechanism is located at the end of the conveying device, and includes a crushing roller, a screen and a bottom knife, the crushing roller is equipped with an alloy cutter head or a cutting blade or an impact cutter head, the screen is located below the crushing roller, and the bottom knife is arranged below the screen to cooperate with the cutter head on the crushing roller.

10. The horizontal biomass steam boiler according to claim 1, characterized in that: Also includes: A base is arranged on a foundation, and the boiler body is mounted on the base.

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