WO2017152782A1 - 一种液态高温熔渣粒化及余热回收装置 - Google Patents

一种液态高温熔渣粒化及余热回收装置 Download PDF

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WO2017152782A1
WO2017152782A1 PCT/CN2017/074804 CN2017074804W WO2017152782A1 WO 2017152782 A1 WO2017152782 A1 WO 2017152782A1 CN 2017074804 W CN2017074804 W CN 2017074804W WO 2017152782 A1 WO2017152782 A1 WO 2017152782A1
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granulation
granulator
slag
heat recovery
waste heat
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PCT/CN2017/074804
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English (en)
French (fr)
Inventor
王树众
吴志强
陈林
于鹏飞
孟海鱼
张忠清
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西安交通大学
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Publication of WO2017152782A1 publication Critical patent/WO2017152782A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Definitions

  • the invention relates to the technical field of high temperature liquid slag waste heat recovery, in particular to a liquid high temperature slag granulation and waste heat recovery device.
  • China is currently the world's largest steel producer, and steel production has maintained its number one position in the world for 17 consecutive years.
  • China's pig iron production reached 711 million tons, accounting for about 60% of the world's total production.
  • blast furnace slag containing huge heat was also produced.
  • the blast furnace slag is generally discharged at a temperature between 1400 and 1550 ° C.
  • Each ton of slag contains (1260 to 1880) ⁇ 10 3 kJ of sensible heat, equivalent to 60 kg of standard coal.
  • the dry slag pit cooling method and the water slag slag method are the most common blast furnace slag treatment methods in China.
  • the dry slag pit cooling method directly discharges the high-temperature liquid slag into the dry slag pit to be air-cooled, and assists water cooling.
  • the method generates a large amount of water vapor when cooling, and releases a large amount of H 2 S and SO 2 gas, corrodes buildings, damages equipment, and deteriorates the working environment. Generally, the method is used only in accident handling. 90% of blast furnace slag in China is treated by water slag.
  • the water slag method refers to the use of low-temperature cooling water to directly mix with high-temperature liquid slag, so that the liquid slag temperature is rapidly lowered and the glass body slag particles are formed.
  • the water slag method can be divided into Inba method, Tula method, bottom filtration method, Lhasa method and Mintek method according to different process flow.
  • the core of the technology is to spray water quenching of high temperature liquid slag to achieve the purpose of cooling and granulation, and then slag separation, the slag water is recirculated through precipitation filtration. use.
  • vitreous slag produced by this method can be used in the cement industry for resource utilization, the process wastes a lot of water resources, generates harmful gases such as SO 2 and H 2 S, and cannot effectively recover the high temperature liquid slag. Quality waste heat resources.
  • the commonly used dry slag cooling method and water slag method not only waste all the high-quality waste heat resources contained in the high-temperature liquid slag, but also consume a lot of water resources and cause serious pollution to the environment.
  • the method has been unable to meet the urgent needs of energy saving and emission reduction in the current steel industry.
  • a highly efficient, non-polluting new technology must be sought to effectively recycle liquid slag resources.
  • the object of the present invention is a liquid high-temperature slag granulation and waste heat recovery device to solve the problem that the current high-quality waste heat resource of liquid slag is seriously wasted.
  • the device of the invention has uniform granulation, high heat recovery efficiency, and can have the effect of recovering the heat of the liquid slag.
  • the utility model relates to a liquid high-temperature slag granulation and waste heat recovery device, which comprises a slag discharge pipe, a granulation bin and a granulation device; the granulation bin has an inverted box shape and a lower opening; the granulated warehouse has an opening at the top thereof for feeding The slag pipe extends; the inner wall of the granulation bin is used to absorb the heat transfer surface of the heat generated by the liquid high-temperature slag granulation; and the granulation device is disposed directly below the slag pipe.
  • the granulating apparatus comprises a granulator, a granulator connecting part and a granulator driving part;
  • the granulator is disc-shaped or cup-shaped, a guiding cone is arranged at the center of the granulator, and the guiding cone is to the granulator
  • the outer edge is provided with ribs;
  • the granulator is connected to the granulator driving part through the granulator connecting part;
  • the granulator driving part is used to drive the granulator to rotate through the granulator connecting part, and to drip into the granulator
  • the liquid slag is granulated into small droplets.
  • the granulator connecting part comprises a granulator base, a rotating shaft and two thrust bearings; the granulator is fixedly connected with the granulator base, the granulator base is fixedly connected with the shaft; the shaft passes through two thrust bearings and a sleeve The barrel is fixed while being coupled to the granulator drive unit via a coupling.
  • edge of the granulator is at an angle of 15° to 60° with respect to the horizontal plane.
  • the high-temperature liquid slag granulation system further comprises a supply air assembly;
  • the air supply assembly comprises two air duct outer sleeves having different outer diameters, and an air duct inner sleeve, and the shaft sleeve is fixed to the air duct inner sleeve through the bottom annular end cover ; the wind is provided at the top of the air supply assembly
  • the annular tuyere is located at the outer periphery of the granulator, and the outlet angle of the annular tuyere is consistent with the inclination angle of the edge of the granulator, and the angle with the horizontal plane is 15-60°.
  • annular tuyere is located below the outer edge of the granulator.
  • the heat exchange surface is in the form of a membrane wall or coil.
  • a plurality of combustion nozzles are arranged on the top of the granulation chamber; cold air nozzles with adjustable air outlet direction are arranged at the top corners of the granulation chamber to prevent the high temperature slag particles from sticking to the inner wall of the granulation chamber.
  • the granulated warehouse has a rectangular, square or circular cross section, and the top of the granulated silo is a flat top or a dome.
  • the present invention has the following beneficial effects:
  • the high-temperature slag flows from the falling slag pipe into the granulation bin, falls on the granulating equipment, is granulated under the high-speed rotation of the granulating equipment, and is laid at the same time under the action of the annular wind around the granulating equipment. Radiation heat exchange is performed on the hot surface to realize granulation and partial recovery of energy of the liquid high-temperature slag.
  • a cold air nozzle is arranged at the top corner of the granulation tank to prevent the high temperature slag particles from sticking to the inner wall of the granulation chamber.
  • the form of the heated surface is a membrane wall and a coil, which increases the heat receiving area and increases the heat recovery efficiency.
  • FIG. 1 is a schematic view of a granulating device for a liquid high-temperature slag granulation and waste heat recovery device according to the present invention
  • FIG. 2 is a schematic view showing the arrangement of the top combustion nozzle and the cold air nozzle of the granulation tank;
  • Figure 3 is a schematic view showing the structure of a granulation apparatus.
  • a liquid high-temperature slag granulation and waste heat recovery device comprises a slag tube 1, a granulation chamber 6 and a granulation device 2 .
  • the granulation bin 6 has an inverted box shape with a rectangular, square or circular cross section, and the top of the granulation bin is a flat top or a dome.
  • the top of the granulation chamber 6 is provided with an opening for the slag tube 1 to extend.
  • the inner wall of the granulation chamber 6 serves to absorb the heat exchange surface 3 of the granulated heat.
  • a granulation device 2 is disposed directly below the slag pipe 1.
  • the high temperature liquid slag granulation system 2 includes a granulator 201, a granulator connecting member, a granulator driving member, a wind supplying member, and an auxiliary device.
  • the granulator 201 is in the shape of a disk or a cup.
  • the granulator 201 is provided with a guiding cone at the center, and the guiding cone is connected to the outer edge of the granulator 201.
  • the edge of the granulator 201 is at an angle of 15-60° with the horizontal plane;
  • the granulator connecting member is a granulator base 202, a rotating shaft 203 and a thrust bearing 204; the granulator 201 is connected to the granulator base 202 by bolts, and the granulator base 202 and the shaft 203 are connected by a key.
  • the shaft 203 is fixed to the shaft sleeve 209 through the thrust bearing 204, and is connected to the motor 2010 through the coupling;
  • the air supply assembly is composed of two air duct outer sleeves 207 and air duct inner sleeves 208 having different outer diameters, and the shaft sleeve 209 is secured to the inner tube sleeve 208 by a bottom annular end cap 205; the outer tube sleeve 207 is externally secured to the stationary sleeve and plate 206.
  • the annular air outlet 2011 opened at the top of the air supply assembly is located at the outer periphery of the granulator 201, and the air outlet angle of the annular air outlet is consistent with the inclination angle of the edge of the granulator, and the angle with the horizontal plane is 15-60.
  • the air duct inner sleeve 208 and the shaft sleeve 209 are provided with an annular air outlet at an upper portion thereof, and the shaft sleeve is provided with cooling air holes on both sides of the two thrust bearings 204.
  • the liquid slag in the slag bag enters the granulation bin 6 through the slag pipe 1 under the control of the plug rod, and falls on the granulator 201.
  • the high-speed rotating granulator 201 will melt the liquid flowing into the rotor cup.
  • the slag is granulated into small droplets, and the small droplets splash into the large space of the granulation chamber.
  • the heat exchange surface 3 laid on the granulation chamber module is subjected to radiant heat exchange to realize granulation and energy partial recovery of the liquid high-temperature slag.
  • One or more combustion nozzles 4 are distributed on top of the granulation bin 6 for baking when the device is turned on.
  • a cold air nozzle 5 whose wind direction can be adjusted is arranged at the top corner of the granulation chamber to prevent the high temperature slag particles from sticking to the inner wall of the granulation chamber 6.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
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Abstract

一种液态高温熔渣粒化及余热回收装置，包括落渣管（1）、粒化仓（6）和粒化设备（2）；粒化仓（6）呈倒扣的盒状，下部开口；粒化仓（6）的顶部设有开口，供落渣管（1）伸入；粒化仓（6）的内壁用于吸收液态高温熔渣粒化所散发热量的换热面（3）；落渣管（1）的正下方设置有粒化设备（2）。高温熔渣自落渣管（1）流入粒化仓（6），落在粒化设备（2）上，在粒化设备（2）高速旋转下被粒化，并在粒化设备（2）周边环形风的作用下，同时向粒化仓（6）敷设的换热面（3）进行辐射换热，实现液态高温熔渣的粒化及能量部分回收。

Description

一种液态高温熔渣粒化及余热回收装置 技术领域
本发明涉及高温液态熔渣余热回收技术领域，特别涉及一种液态高温熔渣粒化及余热回收装置。
背景技术
中国目前是全球最大的钢铁生产国，钢铁产量已连续17年保持世界第一。2014年中国生铁产量达到7.11亿吨，约占世界总产量的60％，在冶炼生铁的过程中同时会产生蕴含巨大热量的高炉渣。高炉渣的出炉温度一般在1400～1550℃之间，每吨渣含(1260～1880)×103kJ的显热，相当于60kg标准煤。在我国现有的炼铁技术下，每生产1吨生铁副产0.3吨高炉渣，以目前我国生铁产量7.11亿吨进行计算，可折合产生2.13亿吨以上的高炉渣，其显热量相当于1278万吨标准煤。
干渣坑冷却法和水冲渣法是目前我国最常见的高炉渣处理方法。干渣坑冷却法将高温的液态熔渣直接排入干渣坑空冷，辅助水冷。该法降温时产生大量水蒸气，同时释放出大量的H2S和SO2气体，腐蚀建筑、破坏设备和恶化工作环境，一般只在事故处理时使用该法。我国90％的高炉渣都采用水冲渣法处理。水冲渣法是指利用低温的冷却水直接与高温的液态熔渣混合，使得液态熔渣温度迅速降低并形成玻璃体态炉渣颗粒。水冲渣法按照不同的工艺流程可分为因巴法、图拉法、底滤法、拉萨法、明特克法。尽管水冲渣工艺不断发展，但其技术的核心还是对高温液态熔渣进行喷水水淬，进而达到冷却和粒化的目的，然后进行水渣分离，冲渣的水经过沉淀过滤后再循环使用。尽管该法产生的玻璃体态熔渣可以应用于水泥工业进行资源化利用，但是处理过程浪费大量水资源，产生SO2和H2S等有害气体，也不能有效回收高温液态熔渣所含有的高品质余热资源。
综上所述，目前普遍采用的干渣坑冷却法和水冲渣法，不仅浪费了高温液态熔渣所含有的全部高品质余热资源，而且消耗大量水资源，对环境造成严重污染，这些处理方式已不能适应目前钢铁行业节能减排的迫切需求。必须寻求一种高效、无污染的新技术对液态熔渣资源进行有效回收。
发明内容
本发明的目的在于一种液态高温熔渣粒化及余热回收装置，以解决当前液态熔渣高品质余热资源浪费严重的问题。本发明装置粒化均匀、热量回收效率高，可有效应回收液态熔渣的热量。
为了实现上述目的，本发明采用的技术方案是：
一种液态高温熔渣粒化及余热回收装置，包括落渣管、粒化仓和粒化设备；粒化仓呈倒扣的盒状，下部开口；粒化仓的顶部设有开口，供落渣管伸入；粒化仓的内壁用于吸收液态高温熔渣粒化所散发热量的换热面；落渣管的正下方设置有粒化设备。
进一步的，粒化设备包括粒化器、粒化器连接部件和粒化器驱动部件；粒化器为盘状或杯状，粒化器中心处设置导流锥，导流锥至粒化器外边缘设置肋片；粒化器通过粒化器连接部件连接粒化器驱动部件；粒化器驱动部件用于通过粒化器连接部件带动粒化器进行旋转，将滴入粒化器中的液态熔渣粒化成小液滴。
进一步的，粒化器连接部件包括粒化器底座、转轴及两个推力轴承；粒化器与粒化器底座固定连接，粒化器底座与轴固定连接；轴通过两个推力轴承与轴套筒固定，同时通过联轴器与粒化器驱动部件相连接。
进一步的，粒化器边缘与水平面角度为15°-60°。
进一步的，高温液态熔渣粒化系统还包括供风组件；供风组件包括两个外径不同的风道外套筒、风道内套筒，轴套筒通过底部环形端盖与风管内套筒固定；供风组件顶部开设有环形风 口；环形风口位于粒化器外周，环形风口的出风角度与粒化器边缘倾角一致，与水平面夹角为15-60°。
进一步的，环形风口位于粒化器外边缘下方。
进一步的，换热面形式为膜式壁或盘管。
进一步的，粒化仓顶部布置有若干燃烧喷嘴；粒化仓顶部四角布置有出风方向能够调节的冷风喷嘴，用于防止高温熔渣颗粒粘在粒化仓内壁。
进一步的，粒化仓截面为长方形、正方形或圆形，粒化仓顶部为平顶或穹顶。
相对于现有技术，本发明具有以下有益效果：
高温熔渣自落渣管流入粒化仓，落在粒化设备上，在粒化设备高速旋转下被粒化，并在粒化设备周边环形风的作用下，同时向粒化仓敷设的换热面进行辐射换热，实现液态高温熔渣的粒化及能量部分回收。
粒化仓顶部四角布置冷风喷嘴，用于防止高温熔渣颗粒粘在粒化仓内壁。
受热面形式为膜式壁、盘管，增加受热面积，增加热回收效率。
避免对高温液态熔渣进行喷水水淬，从而节约水资源、避免有毒气体的产生。
附图说明
下面结合附图和具体实施方式对本发明做进一步详细说明。
图1为本发明一种液态高温熔渣粒化及余热回收装置的粒化装置示意图；
图2为粒化仓顶部燃烧喷嘴及冷风喷嘴布置示意图；
图3为粒化设备的结构示意图。
具体实施方式
请参阅图1所示，本发明一种液态高温熔渣粒化及余热回收装置，包括落渣管1、粒化仓6和粒化设备2。
粒化仓6呈倒扣的盒状，截面为长方形、正方形或圆形，粒化仓顶部为平顶或穹顶。粒化仓6的顶部设有开口，供落渣管1伸入。粒化仓6的内壁用于吸收粒化所散发热量的换热面3。
落渣管1的正下方设置有粒化设备2。
高温液态熔渣粒化系统2包括粒化器201、粒化器连接部件、粒化器驱动部件、供风部件及辅助装置。
粒化器201为盘状或杯状，粒化器201中心设置导流锥，导流锥至粒化器201的外边缘设施肋片；粒化器201边缘与水平面角度为15-60°；粒化器连接部件为粒化器底座202、转轴203及推力轴承204；粒化器201与粒化器底座202通过螺栓相连，粒化器底座202与轴203通过键进行连接。轴203通过推力轴承204与轴套筒209固定，同时通过联轴器与电机2010相连接；供风组件由两个外径不同的风道外套筒207、风道内套筒208组成，轴套筒209通过底部环形端盖205与风管内套筒208固定；风管外套筒207在外部与固定套筒及平板206固定。供风组件顶部所开环形风口2011位于粒化器201外周，环形风口的出风角度与粒化器边缘倾角一致，与水平面夹角为15-60°。风道内套筒208与轴套筒209在上部开有环形风口，轴套筒在两推力轴承204两侧均开冷却风孔。
渣包中的液态熔渣在塞棒的控制下以一定的流量通过落渣管1进入粒化仓6，落在粒化器201上，高速旋转的粒化器201将流入转杯的液态熔渣粒化成小液滴，小液滴飞溅至粒化仓的大空间内，小液滴飞行过程中在粒化仓受热面和粒化器环形风的双重冷却作用下，变成具有硬质外表面的渣粒；同时向粒化仓模块敷设的换热面3进行辐射换热，实现液态高温熔渣的粒化及能量部分回收。粒化仓6顶部分布一个或多个燃烧喷嘴4用于设备开启时烘烤。粒化仓顶部四角布置出风方向可以调节的冷风喷嘴5，用于防止高温熔渣颗粒粘在粒化仓6内壁。
最后应说明的是：以上实施方式仅用以说明本发明而非限制本发明所描述的技术方案；因此，尽管本说明书参照上述的各个实施方式对本发明已进行了详细说明，但是，本领域的普通 技术人员应当理解，仍然可以对本发明进行修改或等同替换；而一切不脱离本发明的精神和范围的技术方案及其改进，其均应涵盖在本发明的权利要求范围中。

Claims (9)

  1. 一种液态高温熔渣粒化及余热回收装置，其特征在于：包括落渣管(1)、粒化仓(6)和粒化设备(2)；
    粒化仓(6)呈倒扣的盒状，下部开口；粒化仓(6)的顶部设有开口，供落渣管(1)伸入；粒化仓(6)的内壁用于吸收液态高温熔渣粒化所散发热量的换热面(3)；
    落渣管(1)的正下方设置有粒化设备(2)。
  2. 根据权利要求1所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：粒化设备(2)包括粒化器、粒化器连接部件和粒化器驱动部件；
    粒化器为盘状或杯状，粒化器中心处设置导流锥，导流锥至粒化器外边缘设置肋片；
    粒化器通过粒化器连接部件连接粒化器驱动部件；粒化器驱动部件用于通过粒化器连接部件带动粒化器进行旋转，将滴入粒化器中的液态熔渣粒化成小液滴。
  3. 根据权利要求2所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：粒化器连接部件包括粒化器底座、转轴及两个推力轴承；粒化器与粒化器底座固定连接，粒化器底座与轴固定连接；轴通过两个推力轴承与轴套筒固定，同时通过联轴器与粒化器驱动部件相连接。
  4. 根据权利要求2所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：粒化器边缘与水平面角度为15°-60°。
  5. 根据权利要求2所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：高温液态熔渣粒化系统还包括供风组件；供风组件包括两个外径不同的风道外套筒、风道内套筒，轴套筒通过底部环形端盖与风管内套筒固定；供风组件顶部开设有环形风口；环形风口位于粒化器外周，环形风口的出风角度与粒化器边缘倾角一致，与水平面夹角为15-60°。
  6. 根据权利要求5所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：环形风口位于粒化器外边缘下方。
  7. 根据权利要求1所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：换热面 (3)形式为膜式壁或盘管。
  8. 根据权利要求1所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：粒化仓顶部布置有若干燃烧喷嘴(4)；粒化仓顶部四角布置有出风方向能够调节的冷风喷嘴(5)，用于防止高温熔渣颗粒粘在粒化仓内壁。
  9. 根据权利要求1所述的一种液态高温熔渣粒化及余热回收装置，其特征在于：粒化仓截面为长方形、正方形或圆形，粒化仓顶部为平顶或穹顶。
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