一、产品介绍 

　　感谢您选择四川智献新能源科技有限公司研发的5LS120E新型节能环保生物质燃料热风炉，该生物质燃料热风炉是一个可信赖的绿色环保节能加温系统，基于农产品烘干和环境加温需求而设计。该热风炉除了在粮食烘干领域得到广泛应用外，还在喷涂烘干机设备、工业炉窑、蔬菜大棚、养殖大棚、烘干机设备、建筑涂料、木料、食品类烘干等行业得到广泛运用。

二、技术特点：

　　1.间接式加热输出的洁净热风最高温度可达200℃，是干燥行业的重要热源。广泛适用于农产品干燥、大棚加温、木材烘干、食品烘干等领域。例如：该热风炉与本公司生产的麦冬烘干机配套，干燥后的麦冬品质和外观俱佳，可达到出口要求。

　　2.环保节能热风炉采用立式结构、结构紧凑占地面积小，采用层状燃烧、半气化燃烧、多层换热设计、自动控制进料，换热的整个过程冷风平衡渐进吸热，热风平衡渐次放热，吸、放热速度曲线平滑、换热效果更好，换热面积大、热效率高，符合环保要求。采用正压送风方式输出热风，无漏烟污染物料和跑冒火星造成火灾的风险。采用的生物质颗粒燃料是国家支持推广的新型环保燃料，具有热值稳定、成本低、来源广泛的特点。

　　3.自动化程度高采用机电程序控制，可按用户设定控制然烧工况，自动运行，操作维护简便。

　　4.安装方便、使用安全，质量可靠采用一体化设计，安装方便。炉芯内胆采用耐高温材料制作，使用寿命长；电气连锁控制防止误操作，定期清灰，保障热风炉安全、稳定的运行，故障率低。

三、关键参数

四、热风炉结构图

五、热风炉产品尺寸图

　　六、热风炉设计技术概述

　　6.1热风炉设备特点综述热风炉是根据终端设备对温度的要求，输出适合温度和一定流量热烟气的设备，在满足此基本要求的基础之上，我们重点考虑了如下方面：)热风炉在运行过程中适时对输出热风实现检测，满足终端设备所需要风温及风量。

　　燃烧器调节范围大，火焰长度、扩散角均能和炉子合理匹配，保证安全稳定运行：6)炉子采用合理的钢结构来支撑本体，选用耐高温性能良好的耐火材料作燃烧室内衬，采用二次风冷却的方式，确保炉体表面温度符合技术要求：©)合理配置炉子清灰口、除灰口、除渣口、观察孔，结构设计做到开启灵活，关闭严密，减少炉气外溢和冷风吸入的现象：)配备完善的热工控制系统设备，自动化程度高。确保严格的空燃比和合理的炉压等控制，使热损失减少到最小。

　　6.2热风炉结构与组成热风炉主要由热风炉本体、燃烧系统、换热系统及控制系统等组成，燃烧系统和换热系统相互隔离，换热器采用双回路螺旋板式结构，燃烧烟气和新风在换热器中实现放、吸热后，新风最终以需要的温度和流量供给用气设备，燃烧烟气经沉降除尘排放入大气。

　　热风炉本体外型为封闭立式圆筒形整体结构，本体上设置清灰口、除灰口、除渣口、观察孔、紧急排热口口、测压、测温点等附属设备，详细参见“热风炉结构图”。

　　6.3燃烧器结构及性能

　　燃烧系统的燃烧室位于热风炉本体竖向中心底部位置，燃烧室燃烧段采用310$耐高温不锈钢材质，在其外圆周边密布焊接散热片，燃烧室设置有燃料供给机构、助燃送风机构、二次送风机构，焦渣收集装置。

　　燃烧室最底部设置助燃风鼓，进风管的一端以切线形式安装于风鼓外沿，以使送入的助燃风形成旋流，保证燃烧层底部受风的风压、风流量均匀，进风管的另一端与助燃鼓风机相连，在燃烧层上部一定距离位置设置二次进风口，其风流量也由助燃鼓风机提供，保证燃料气化的充分燃烧，杜绝烟气中黑烟的产生。

　　在燃烧室上部一定位置安装燃料进料机构，该机构的入料端与燃料斗相接，燃料以螺旋推进方式在管内运行，出料端与燃烧室相接部段设计成45°抛物角度，燃料以抛物的形式落入燃烧室，避免了燃烧室高温火焰引燃进料机构内燃料的可能。

　　6.4热风炉燃烧及控制系统说明

　　换热器设计成双回路螺旋板式结构，分为新风回路和烟气回路，燃烧烟气和新风分别在各自的回路流动。

　　新风在送风机的作用下从炉体侧面切向进入双回路螺旋换热器最外层夹道，在送风机的压力作用下沿螺旋夹道旋转几周后进入炉心部位，再沿炉心外表面向下从出风口输出，此设置使热风炉输出的热风始终保持正压、恒压、恒流输出，而燃烧室和烟气回路始终保持负压、恒压、恒流输出。在此气流的运行过程中，新风从低温到高温渐次吸热，新风从炉体的最外层螺旋向内运行，保证了炉体外层温度小于60°。

　　由炉心燃烧室产生的燃烧烟气从换热器心部进入换热器的烟气夹道，在引烟风机吸力的作用下沿螺旋夹道旋转几周后经引烟风机排放入大气，燃烧室和烟气回路始终保持负压、恒压、恒流输出。燃烧烟气回路下部设有集灰仓，烟气流动过程中在离心力的作用下灰分物沉降在集灰仓内，再通过除灰口将灰分物清出，在换热器的顶部还设有可拆卸顶盖和顶部清理口，便于清除换热烟道中的烧结物。

　　该技术的突出优点如下：1、安全性优点(1)新风风道与燃烧烟气风道完全隔离，使输出的热风不含有污染物，保持了自然风的洁度，杜绝了物料的二次污染。

　　(2)新风以正压送风形式工作，烟气以负压形式工作，哪怕是炉膛或换热器的某个部位裂口、烧穿发生两风道相互窜风时，也只能是新风向烟气中流动而不会发生烟气向新风流动的现象，避免了烟气进入新热风对物料的污染和烟气中火星进入物料所引起的火灾风险。

　　2、工况优点(1)助燃风量压力高，火焰爆烈、刚性强，二次送风实现了燃料的完全燃烧，提高了燃料的燃值。

　　(2)恒压、恒流、恒温、持续的正压送风方式使工作更加稳定，物料受热均匀，有利于提高加工产品品质。

　　(3)在恒定的输出状态下，采用调节燃料供给量的方式来调节输出热风温度，克服了间隙式温控频繁启动和升降温过程的温度波动问题，使温度曲线平滑恒定，可以在士1°温差下恒定运行。

　　(4)紧急排热口的设置确保在紧急停机的状况下及时排出炉内的高温，保护炉膛内胆。

　　(5)在燃烧系统的高温部位采用耐高温金属材料，相对于非金属耐火材质的热惰性而言，增加了换热效率，延长了产品使用寿命。

　　3、节能环保性优点(1)尾气排烟口无肉眼可见烟雾、无肉眼可见粉尘，烟气排放温度低于80°，具有卓越的环保性能。

　　(2)换热器集灰仓内沉积物中无碳黑色颗粒，燃料利用率高，节约燃料。

　　(3)板式螺旋换热器结构随螺旋层数的增加使换热面积无限增大，换热效率达99%以上，实现热量的高效转换。

　　(4)燃烧室燃烧容积和螺旋板式换热器螺旋层数的变化使热风炉总功率满足各种工艺和工况需要。

　　4、自动、智能化优点(1)整机能在设定参数下全自动稳定运行，其故障检测系统能自动检测各机构运行状态，并发出相关声光提示。

　　(2)可根据用户需要配置温度反馈控制系统，当环境温度发生的变化时自动控制燃料供给量，以保证输出热风温度的恒定。

　　6.5热风炉控制系统说明热风炉配置独立的燃烧及换热控制系统。控制系统应在确保安全的前题下根据工艺特殊要求配置一套完善的控制方案，使热风炉控制操作灵活、热风炉运行安全可靠。

　　本燃烧控制系统采用全套自动控制，整套系统由各种传感器、控制器、各仪表、保护器、控制柜等组成。

　　(1)换热器冷风系统与燃烧系统实行电气连锁，只有开启换热器冷风机后才能开启其它系统设备，以保护炉膛系统不被高温烧坏。

　　(2)各保护器在进入保护状态时同时提供提示信号。

　　(3)温度传感器与温控仪配合对热风温度适时监测并显示适时温度数据，温度传感器的变量信号传送给温度反馈控制系统后由该系统输出变量电信号来控制供料量，达到自动恒温的目的。

First, the product introduction 

Thank you for choosing the 5LS120E new energy-saving and environmentally-friendly biomass fuel hot blast stove developed by Sichuan Zhixian New Energy Technology Co., Ltd., which is a reliable green and energy-saving heating system, designed based on the drying and environmental heating needs of agricultural products. In addition to being widely used in the field of grain drying, the hot blast stove is also widely used in spraying dryer equipment, industrial furnaces, vegetable greenhouses, breeding greenhouses, dryer equipment, architectural coatings, wood, food drying and other industries.

2. Technical features:

1. The maximum temperature of clean hot air output by indirect heating can reach 200°C, which is an important heat source in the drying industry. It is widely used in agricultural product drying, greenhouse heating, wood drying, food drying and other fields. For example, the hot blast stove is matched with the wheat winter dryer produced by the company, and the quality and appearance of the dried wheat winter are good, which can meet the export requirements.

2. The environmental protection and energy-saving hot blast stove adopts vertical structure, compact structure, small footprint, layered combustion, semi-gasification combustion, multi-layer heat exchange design, automatic control feeding, the whole process of heat exchange, cold air balance gradual heat absorption, hot air balance gradual heat release, smooth heat absorption and heat release speed curve, better heat exchange effect, large heat exchange area, high thermal efficiency, in line with environmental protection requirements. The positive pressure air supply mode is used to output hot air, and there is no risk of fire caused by smoke leakage and pollutants and sparks. The biomass pellet fuel used is a new type of environmentally friendly fuel supported and promoted by the state, which has the characteristics of stable calorific value, low cost and wide range of sources.

3. High degree of automation, using electromechanical program control, can control the burning condition according to user settings, automatic operation, easy operation and maintenance.

4. Easy to install, safe to use, reliable quality, integrated design, easy to install. The inner liner of the furnace core is made of high-temperature resistant materials, which has a long service life, and the electrical interlocking control prevents misoperation, and the ash is cleaned regularly to ensure the safe and stable operation of the hot blast furnace with low failure rate.

3. Key parameters

Fourth, the structure of the hot blast stove

5. Dimensions of hot blast stove products

6. Overview of hot blast furnace design technology

6.1 Hot blast stove equipment characteristics overview Hot blast stove is according to the terminal equipment requirements for temperature, output suitable temperature and a certain flow of hot flue gas equipment, on the basis of meeting this basic requirements, we focus on the following aspects: hot blast furnace in the process of operation of the output hot air in a timely manner to achieve detection, to meet the terminal equipment required air temperature and air volume.

The burner has a large adjustment range, and the flame length and diffusion angle can be reasonably matched with the furnace to ensure safe and stable operation: 6) The furnace adopts a reasonable steel structure to support the body, and the refractory material with good high temperature resistance is selected as the lining of the combustion chamber, and the secondary air cooling method is used to ensure that the surface temperature of the furnace body meets the technical requirements:©) The furnace ash cleaning port, ash removal port, slag removal port, and observation hole are reasonably configured, and the structural design is flexible to open and close tightly, so as to reduce the phenomenon of furnace gas overflow and cold air inhalation:) Equipped with perfect thermal control system equipment, high degree of automation. Tight air-fuel ratio and reasonable furnace pressure control are ensured to minimize heat loss.

6.2 hot blast furnace structure and composition of hot blast furnace is mainly composed of hot blast furnace body, combustion system, heat exchange system and control system, etc., the combustion system and heat exchange system are isolated from each other, the heat exchanger adopts a double-circuit spiral plate structure, the combustion flue gas and fresh air in the heat exchanger to achieve heat extraction and heat absorption, the fresh air is finally supplied to the gas equipment with the required temperature and flow, and the combustion flue gas is discharged into the atmosphere through sedimentation and dust removal.

The appearance of the hot blast furnace body is a closed vertical cylindrical overall structure, and auxiliary equipment such as ash cleaning port, ash removal port, slag removal port, observation hole, emergency heat exhaust port, pressure measurement, temperature measurement point and other auxiliary equipment are set on the body.

6.3 Burner structure and performance

The combustion chamber of the combustion system is located at the bottom of the vertical center of the hot blast stove body, the combustion section of the combustion chamber is made of 310$ high-temperature resistant stainless steel, and the outer circle is densely welded with heat sinks, and the combustion chamber is provided with a fuel supply mechanism, a combustion air supply mechanism, a secondary air supply mechanism, and a coke slag collection device.

The bottom of the combustion chamber is provided with a combustion air drum, and one end of the air inlet pipe is installed on the outer edge of the air drum in the form of a tangent line, so that the incoming combustion air forms a swirl to ensure that the wind pressure and air flow rate of the bottom of the combustion layer are uniform, and the other end of the air inlet pipe is connected with the combustion blower, and the secondary air inlet is arranged at a certain distance from the upper part of the combustion layer, and the air flow is also provided by the combustion blower to ensure the full combustion of fuel gasification and eliminate the generation of black smoke in the flue gas.

A fuel feeding mechanism is installed at a certain position in the upper part of the combustion chamber, the feeding end of the mechanism is connected with the fuel hopper, the fuel runs in the pipe in a screw propulsion mode, the section where the discharge end is connected with the combustion chamber is designed to be a 45 ° throwing angle, and the fuel falls into the combustion chamber in the form of a throwing object, and the possibility that the high temperature flame of the combustion chamber ignites the fuel in the feeding mechanism is avoided.

6.4 Description of hot blast furnace combustion and control system

The heat exchanger is designed as a double-circuit spiral plate structure, which is divided into a fresh air circuit and a flue gas circuit, and the combustion flue gas and fresh air flow in their respective circuits.

Under the action of the blower, the fresh air tangentially enters the outermost sandwich channel of the double-circuit spiral heat exchanger from the side of the furnace body, rotates along the spiral clamp channel for several weeks under the pressure of the blower, enters the furnace core, and then outputs it from the air outlet along the outer surface of the furnace core, this setting makes the hot air output of the hot blast furnace always maintain positive pressure, constant pressure and constant current output, while the combustion chamber and flue gas circuit always maintain negative pressure, constant pressure and constant current output. During the operation of this air flow, the fresh air gradually absorbs heat from low temperature to high temperature, and the fresh air runs inward from the outermost spiral of the furnace body, ensuring that the temperature of the outer layer of the furnace is less than 60°.

The combustion flue gas generated by the combustion chamber of the furnace core enters the flue gas clamp channel of the heat exchanger from the core of the heat exchanger, rotates along the spiral clamp channel for several weeks under the action of the suction force of the flue gas induction fan, and is discharged into the atmosphere through the flue gas induction fan, and the combustion chamber and flue gas circuit always maintain negative pressure, constant pressure and constant current output. The lower part of the combustion flue gas circuit is provided with an ash collection bin, and the ash settles in the ash collection bin under the action of centrifugal force in the flue gas flow process, and then the ash is cleared out through the ash removal port, and the top of the heat exchanger is also provided with a removable top cover and a top cleaning port, which is convenient for removing the sinter in the heat exchange flue.

The outstanding advantages of this technology are as follows: 1. Safety advantages (1) The fresh air duct is completely isolated from the combustion flue gas duct, so that the output hot air does not contain pollutants, maintains the cleanliness of the natural wind, and eliminates the secondary pollution of materials.

(2) The fresh air works in the form of positive pressure air supply, and the flue gas works in the form of negative pressure, even if it is a crack in a certain part of the furnace or heat exchanger, when the two air ducts are channeled to each other, it can only flow in the fresh air to the flue gas and will not flow to the fresh air, so as to avoid the pollution of the material caused by the flue gas entering the new hot air and the fire risk caused by the sparks entering the material in the flue gas.

2. Advantages of working conditions (1) The combustion air volume pressure is high, the flame is fierce and rigid, and the secondary air supply realizes the complete combustion of the fuel and improves the combustion value of the fuel.

(2) Constant pressure, constant flow, constant temperature, and continuous positive pressure air supply mode make the work more stable, and the material is heated evenly, which is conducive to improving the quality of processed products.

(3) In the constant output state, the output hot air temperature is adjusted by adjusting the fuel supply, which overcomes the temperature fluctuation problem of frequent starting and temperature rise and fall of the interstitial temperature control, and makes the temperature curve smooth and constant, and can run continuously under the temperature difference of 1°C.

(4) The setting of the emergency heat exhaust port ensures that the high temperature in the furnace is discharged in time under the condition of emergency shutdown and protects the inner liner of the furnace.

(5) The use of high-temperature resistant metal materials in the high-temperature parts of the combustion system increases the heat exchange efficiency and prolongs the service life of the product compared with the thermal inertia of non-metallic refractory materials.

3. Advantages of energy saving and environmental protection (1) There is no visible smoke and dust at the exhaust gas exhaust outlet, and the flue gas emission temperature is lower than 80°, which has excellent environmental performance.

(2) There are no carbon black particles in the sediment in the ash collection bin of the heat exchanger, and the fuel utilization rate is high and the fuel is saved.

(3) With the increase of the number of spiral layers, the heat exchange area of the plate spiral heat exchanger structure increases infinitely, and the heat exchange efficiency reaches more than 99%, so as to realize the efficient conversion of heat.

(4) The change of the combustion volume of the combustion chamber and the number of spiral layers of the spiral plate heat exchanger makes the total power of the hot blast furnace meet the needs of various processes and working conditions.

4. Advantages of automatic and intelligent (1) The whole machine can run automatically and stably under the set parameters, and its fault detection system can automatically detect the operating status of each mechanism and issue relevant sound and light prompts.

(2) The temperature feedback control system can be configured according to the user's needs, and the fuel supply can be automatically controlled when the ambient temperature changes, so as to ensure the constant temperature of the output hot air.

6.5 Hot blast furnace control system description: The hot blast furnace is equipped with an independent combustion and heat exchange control system. The control system should be equipped with a complete set of control schemes according to the special requirements of the process under the premise of ensuring safety, so that the hot blast furnace control operation is flexible and the hot blast furnace operation is safe and reliable.

The combustion control system adopts a full set of automatic control, and the whole system is composed of various sensors, controllers, instruments, protectors, control cabinets, etc.

(1) The heat exchanger cold air system and the combustion system are electrically interlocked, and other system equipment can only be turned on after the heat exchanger cold fan is turned on to protect the furnace system from being burned out by high temperature.

(2) Each protector provides a prompt signal at the same time when entering the protection state.

(3) The temperature sensor and the temperature controller cooperate to monitor the hot air temperature in a timely manner and display the timely temperature data, and the variable signal of the temperature sensor is transmitted to the temperature feedback control system, and the system outputs the variable electrical signal to control the feeding amount to achieve the purpose of automatic constant temperature.