WO2014206057A1 - 一种生物质超细粉体制备装置及其制备方法 - Google Patents

一种生物质超细粉体制备装置及其制备方法 Download PDF

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Publication number
WO2014206057A1
WO2014206057A1 PCT/CN2014/000357 CN2014000357W WO2014206057A1 WO 2014206057 A1 WO2014206057 A1 WO 2014206057A1 CN 2014000357 W CN2014000357 W CN 2014000357W WO 2014206057 A1 WO2014206057 A1 WO 2014206057A1
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Prior art keywords
biomass
powder
pulverizer
coarse
ultrafine powder
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PCT/CN2014/000357
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English (en)
French (fr)
Inventor
朱松柏
陈思庚
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多源活粒集团有限公司
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Publication of WO2014206057A1 publication Critical patent/WO2014206057A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1814—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator

Definitions

  • the present invention relates to a biomass ultrafine powder preparation device and a preparation method thereof, and belongs to the field of ultrafine powder preparation. Background technique
  • the pulverization technology plays an important role in the transformation and pre-treatment of biomass energy. Only the continuous improvement and improvement of pulverization processing technology can effectively promote the wide, efficient and sustainable utilization of biomass in China. In general, the finer the particle size of the pulverized biomass material, the better the post-processing effect, but due to the light weight of the biomass and high fiber content, the existing biomass pulverizing equipment mostly uses the traditional hammer pulverizer, wood. Instead of equipment such as powder machine, the pulverized material has a coarse particle size and cannot be adjusted, and the production efficiency is low, which is difficult to meet production and research needs. How to crush biomass to below 30 ⁇ or even finer is a traditional problem.
  • the object of the present invention is to provide a biomass ultrafine powder preparation device according to the deficiencies of the prior art, which can adjust the particle size of the material, and has the characteristics of high production efficiency and simple structure.
  • Another object of the present invention is to provide a method for preparing a biomass ultrafine powder, which is capable of efficiently pulverizing biomass to less than 30 ⁇ .
  • a biomass ultrafine powder preparation device is composed of a coarse pulverizer, a biomass-specific ultrafine pulverizer, a pulse bag type dust remover, a double-layer plate blanking valve, and an induced draft fan;
  • the coarse pulverizer is connected to the superfine pulverizer for biomass;
  • the biomass-specific ultrafine pulverizer is provided with a pulverization chamber and a classifier in order from bottom to top;
  • the biomass-specific superfine pulverizer and grading The machine is a one-piece structure, and the crushing and grading can be carried out continuously and simultaneously.
  • the biomass-specific ultrafine pulverizer adopts a high linear velocity of 120-150 m/s to achieve effective pulverization;
  • the pulverization chamber is provided with a rotating grinding disc; and the grinding disc is a hammer impact mill.
  • the classifier is provided with a classifying impeller and a grading rotating shaft; the grading impeller is coaxial with the grading rotating shaft; the grading impeller diameter ratio is selected to be 0.4-0.5; the grading impeller annulus area is controlled at 20%-25% ; the graded impeller radial speed is controlled at 1.5-2m/s ; the grader speed is controlled at 1500-2000rpm ; the bottom of the pulse bag filter is provided with double-layer plate blanking, The double-layer plate blanking valve and the classifier are connected by a pipe; the pulse bag type dust collector is connected to the induced draft fan through a pipe.
  • the beneficial effects of the present invention are as follows: 1 By dividing the biomass-specific pulverizer into two parts, a coarse pulverizer and an ultra-fine pulverizer, a complete process is realized from the raw material of the biomass itself to the ultrafine powder (30 um to fine). In the integrated process, there is no need to carry out other procedures such as transfer pulverization; 2 The grinding disc of the crushing chamber crushes the material to be shredded into coarse and uneven powder, and the classifier divides the powder with uneven thickness into fine powder of acceptable size and no Qualified coarse powder, unqualified coarse powder is returned to the crushing chamber by gravity and continues to be crushed. The qualified fine powder enters the pulse bag type dust collector through the pipeline by the classifier, and is collected by the double-layer plate discharge valve. Description
  • the regular crystal powder plays a simple and convenient screening function; 3
  • the superfine pulverizer for biomass is integrated with the classifier, and the pulverization and grading can be carried out continuously and synchronously; 4
  • the material of the coarse pulverizer enters the biomass through the pipeline
  • the crushing chamber of the special superfine pulverizer enters from the bottom of the grinding disc, which can effectively solve the problem of the pulverization efficiency caused by the small-density material not falling down on the impact block;
  • the dusty exhaust gas in the pulse bag type dust collector is discharged by the induced draft fan , greatly reduce the pollution of the environment; 6 for the crushing host, by selecting its line speed of 120-150m / s, effectively achieve the pulverization of fibrous materials; 7 due to the small biomass density, the finished product cutting valve is double-layered
  • the plate type lowering valve makes it more airtight and smoother. 8 Through the rear of the induced draft fan, it provides negative pressure for the whole system, keeping the production environment under negative
  • FIG. 1 is a schematic structural view of a biomass ultrafine powder preparation device.
  • Figure 2 is a schematic diagram of a superfine pulverizer for biomass.
  • FIG. 1-2 coarse pulverizer 1, biomass-specific superfine pulverizer 2, classifier 3, pulverization chamber 4, grinding disc 5, pulse bag type dust collector 6, double-layer plate cutting valve 7, induced draft fan 8.
  • a biomass ultrafine powder preparation device and a preparation method thereof as shown in FIG. 1-2: a coarse pulverizer (1), a biomass-specific ultrafine pulverizer (2), a pulse bag type dust collector (6), double-layer plate blanking valve (7) and induced draft fan (8).
  • the coarse pulverizer (1) and the ultra-fine pulverizer (2) for biomass are connected by pipes, and the ultra-fine pulverizer for biomass (2) is provided with a pulverization chamber (4) and a classifier (3) from bottom to top;
  • the material-specific ultra-fine pulverizer (2) and the classifier (3) are integrated, and the pulverization and grading can be carried out continuously and synchronously;
  • the ultra-fine pulverizer for biomass (2) is selected with a high linear velocity of 120-150 m/s.
  • the impeller height-diameter ratio is selected to be 0.4-0.5; the graded impeller annulus area is controlled at 20%-25% ; the graded impeller radial speed is controlled at 1.5-2m/s; the grader speed is controlled at 1500-2000rpm; pulse bag type dust collector (6)
  • pulse bag type dust collector (6) There is a double-layer plate blanking valve (7) at the bottom, a double-layer plate blanking valve (7) and a classifier (3) are connected by pipes; a pulse bag type dust collector (6) is passed through a pipe and an induced draft fan (8) ) Connect.
  • Step one the biomass raw material is initially pulverized into particles by a coarse pulverizer (1): Step 2, the particles obtained by coarse pulverization are passed through the pipeline from the bottom of the grinding disc (5) to the biomass-specific super In the pulverization chamber of the fine pulverizer (2), the high-speed rotating grinding disc (5) crushes the fed granules into coarse and uneven powder: Step 3, classifier (3) The powder is divided into fine powders of acceptable size.
  • the grader (3) speed is controlled at 1500-2000 rpm : step four, the qualified fine powder enters the pulse bag type dust collector (6) under the action of the induced draft fan (8), and sieved
  • the final product is discharged from the double-layer plate blanking valve (7), and the gas purified by the pulse bag type dust remover (6) is extracted by the induced draft fan (8); in step 5, the unqualified coarse powder will fall back to the crushing due to its own gravity. Room (4) continues to smash until it reaches the acceptable particle size

Abstract

本发明的目的是提供一种生物质超细粉体制备装置及其制备方法。由粗粉碎机、生物质专用超细粉碎机、脉冲袋式除尘器、双层板下料阀及引风机组成。粗粉碎机与生物质专用超细粉碎机通过管道连接；生物质专用超细粉碎机由下至上依次设有粉碎室、分级机；生物质专用超细粉碎机与分级机为一体式结构，粉碎、分级可连续、同步进行。本实用新型的有益效果是：粉碎室的磨盘将送入的物料击碎成粗细不均匀的粉体，分级机把粗细不均匀的粉体分成粒度合格的细粉和不合格的粗粉，不合格的粗粉因重力回落至粉碎室继续粉碎，合格的细粉经管道由分级机进入脉冲袋式除尘器，并由双层板下料阀收集得到不规则晶体粉末，起到了简洁、便利的筛选作用；同时，生物质专用超细粉碎机采用与分级机一体式结构，粉碎、分级可连续、同步进行；脉冲袋式除尘器中含尘的废气被引风机排出，同时也大大减少了对环境的污染。

Description

说 明 书
一种生物质超细粉体制备装置及其制备方法
技术领域
[0001] 本发明涉及一种生物质超细粉体制备装置及其制备方法， 属于超细粉体制备领域。 背景技术
[0002】 粉碎技术在生物质能的转化和前期处理过程中扮演着重要的角色， 只有粉碎加工技 术的不断进步和完善， 才能有效地推动我国生物质能广泛、 高效与持续化的利用。 一般而 言， 粉碎后的生物质原料粒度越细， 后期加工利用效果越好， 但由于生物质比重轻、 纤维含 量高的特点， 现有生物质粉碎设备大多用传统的锤片粉碎机、 木粉机等设备代替， 粉碎后的 物料粒度较粗且无法进行调整， 生产效率较低， 难以满足生产和研究需求。 如何将生物质粉 碎至 30 μ πι以下甚至更细是一个传统难题。
发明内容
[0003] 本发明的目的是针对现有技术的不足， 提出的一种生物质超细粉体制备装置， 该装 置能够对物料粒度进行调整， 具有生产效率高、 结构简单等特点。
[0004] 本发明的另一个目的是提出一种制备生物质超细粉的方法， 该方法能有效的将生物 质粉碎至 30 μ ηι以下。
[0005] 本发明所述的一种生物质超细粉体制备装置由粗粉碎机、 生物质专用超细粉碎机、 脉冲袋式除尘器、 双层板下料阀及引风机组成； 所述的粗粉碎机与生物质专用超细粉碎机通 过管道连接； 所述的生物质专用超细粉碎机由下至上依次设有粉碎室、 分级机； 所述的生物 质专用超细粉碎机与分级机为一体式结构， 粉碎、 分级可连续、 同步进行。
[0006] 进一步的， 所述的生物质专用超细粉碎机选用高线速度 120-150m/s 来实现有效粉 碎； 所述的粉碎室设有转动的磨盘； 所述的磨盘为锤式冲击磨； 所述的分级机内设有分级叶 轮及分级转轴； 所述的分级叶轮与分级转轴同轴； 所述的分级叶轮髙径比选取在 0.4-0.5 ; 所 述的分级叶轮环隙面积控制在 20%-25%; 所述的分级叶轮径向速度控制在 1.5-2m/s; 所述的 分级机转速控制在 1500-2000rpm; 脉冲袋式除尘器底部设有双层板下料阔， 所述的双层板 下料阀与分级机通过管道连接； 所述的脉冲袋式除尘器通过管道与引风机连接。
[0007] 本发明的有益效果是： ①通过将生物质专用粉碎机分为粗粉碎机和超细粉碎机两部 分， 实现全套工艺从生物质本身原料直接到超细粉体 （30um 以细） 一体化流程， 无需再进 行其他中转粉碎等程序； ②粉碎室的磨盘将送入的物料击碎成粗细不均匀的粉体， 分级机把 粗细不均匀的粉体分成粒度合格的细粉和不合格的粗粉， 不合格的粗粉因重力回落至粉碎室 继续粉碎， 合格的细粉经管道由分级机进入脉冲袋式除尘器， 并由双层板下料阀收集得到不 说 明 书
规则晶体粉末， 起到了简洁、 便利的筛选作用； ③生物质专用超细粉碎机采用与分级机一体 式结构， 粉碎、 分级可连续、 同步进行； ④经粗粉碎机的物料经管道进入生物质专用超细粉 碎机的粉碎室是由磨盘底部进入， 能有效解决小密度物料不易滑落在冲击块上所导致的粉碎 效率底下的问题； ⑤脉冲袋式除尘器中含尘的废气被引风机排出， 大大减少了对环境的污 染； ⑥对于粉碎主机， 通过选用其线速度为 120— 150m/s， 有效实现对纤维状物料的粉碎； ⑦由于生物质密度小， 成品下料阀采用双层翻板式的下料阀， 使其气密性更好， 下料更顺 畅； ⑧通过引风机后置， 为整个系统提供负压， 保持生产环境是负压操作， 无粉尘污染。 附图说明
[0008] 图 1为生物质超细粉体制备装置结构示意图。
图 2为生物质专用超细粉碎机示意图。
图 1-2中， 粗粉碎机 1、 生物质专用超细粉碎机 2、 分级机 3、 粉碎室 4、 磨盘 5、 脉冲袋式 除尘器 6、 双层板下料阀 7、 引风机 8。
具体实施方式
[0009] 一种生物质超细粉体制备装置及其制备方法， 如图 1-2所示： 由粗粉碎机 （1)、 生物 质专用超细粉碎机 （2)、 脉冲袋式除尘器 （6)、 双层板下料阀 （7) 及引风机 （8) 组成。 粗 粉碎机 （1) 与生物质专用超细粉碎机 （2) 通过管道连接， 生物质专用超细粉碎机 （2) 由 下至上依次设有粉碎室 （4)、 分级机 （3); 生物质专用超细粉碎机 （2) 与分级机 （3) 为一 体式结构， 粉碎、 分级可连续、 同步进行； 生物质专用超细粉碎机 （2) 选用高线速度 120- 150m/s 来实现有效粉碎； 粉碎室 （4) 设有转动的磨盘 （5); 磨盘 （5) 为锤式冲击磨； 分 级机 （3) 内设有分级叶轮及分级转轴； 分级叶轮与分级转轴同轴； 分级叶轮高径比选取在 0.4-0.5； 分级叶轮环隙面积控制在 20%-25%; 分级叶轮径向速度控制在 1.5-2m/s; 分级机转 速控制在 1500-2000rpm; 脉冲袋式除尘器 （6) 底部设有双层板下料阀 （7)， 双层板下料阀 (7) 与分级机 （3) 通过管道连接； 脉冲袋式除尘器 （6) 通过管道与引风机 （8) 连接。
[0010] 具体实施步骤如下： 步骤一， 生物质原料经粗粉碎机 （1) 进行初步粉碎成颗粒： 步 骤二， 经过粗粉碎得到的颗粒通过管道由磨盘 （5) 底部进入到生物质专用超细粉碎机 （2) 的粉碎室中， 高速转动的磨盘 （5) 将送入的颗粒击碎成粗细不均匀的粉体： 步骤三， 分级 机 （3) 把粉体分成粒度合格的细粉和不合格的粗粉， 所述的分级机 （3) 转速控制在 1500- 2000rpm: 步骤四， 合格的细粉在引风机 （8) 的作用下进入脉冲袋式除尘器 （6)， 经筛分最 终从双层板下料阀 （7) 排出成品， 经脉冲袋式除尘器 （6) 净化的气体被引风机 （8) 抽 出； 步骤五， 不合格的粗粉因自身重力会回落到粉碎室 （4) 继续粉碎， 直至达到合格粒度

Claims

说 明 书 的超细粉体。 [0011] 利用本发明所述的一种生物质超细粉体制备装置及其制备方法最终收集得到的产品是 不规则晶体粉末。 权 利 要 求 书
1. 一种生物质超细粉体制备装置， 由粗粉碎机、 生物质专用超细粉碎机、 脉冲袋式除尘 器、 双层板下料阀及引风机组成， 其特征在于： 所述的粗粉碎机与生物质专用超细粉碎机通 过管道连接； 所述的生物质专用超细粉碎机由下至上依次设有粉碎室、 分级机； 所述的粉碎 室设有转动的磨盘； 脉冲袋式除尘器底部设有双层板下料阀， 所述的双层板下料阀与分级机 通过管道连接； 所述的脉冲袋式除尘器通过管道与引风机连接。
2. 根据权利要求 1所述的一种生物质超细粉体制备装置， 其特征在于： 所述的生物质专用 超细粉碎机与分级机为一体式结构， 粉碎、 分级可连续、 同步进行； 所述的生物质专用超细 粉碎机选用高线速度 120-150m/s来实现有效粉碎。
3. 根据权利要求 1所述的一种生物质超细粉体制备装置， 其特征在于： 所述的分级机内设 有分级叶轮及分级转轴， 分级叶轮与分级转轴同轴， 所述的分级叶轮高径比选取在 0.4-0.5、 环隙面积控制在 20%-25%、 径向速度控制在 1.5-2m/s。
4. 根据权利要求 1所述的一种生物质超细粉体制备装置， 其特征在于： 所述的磨盘为锤式 冲击磨。
5. 利用权利要求 1所述的一种生物质超细粉体制备装置制备生物质超细粉体的方法,其特征 在于： 步骤一， 生物质原料经粗粉碎机进行初步粉碎成颗粒； 步骤二， 经过粗粉碎得到的颗 粒通过管道由磨盘底部进入到生物质专用超细粉碎机的粉碎室中， 高速转动的磨盘将送入的 颗粒击碎成粗细不均匀的粉体； 步骤三， 分级机把粉体分成粒度合格的细粉和不合格的粗 粉， 所述的分级机转速控制在 1500-2000rpm; 步骤四， 合格的细粉在引风机的作用下进入 脉冲袋式除尘器， 经筛分最终从双层板下料阀排出成品， 经脉冲袋式除尘器净化的气体被引 风机抽出； 步骤五， 不合格的粗粉因自身重力会回落到粉碎室继续粉碎， 直至达到合格粒度 的超细粉体。
6. 如权利要求 5所述的一种生物质超细粉体制备装置制备生物质超细粉体的方法， 其特征 在于： 收集的产品为不规则晶体粉末。
PCT/CN2014/000357 2013-06-24 2014-04-01 一种生物质超细粉体制备装置及其制备方法 WO2014206057A1 (zh)

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