WO2019091083A1 - 一种废金属冶炼烟尘处理系统 - Google Patents

一种废金属冶炼烟尘处理系统 Download PDF

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WO2019091083A1
WO2019091083A1 PCT/CN2018/087610 CN2018087610W WO2019091083A1 WO 2019091083 A1 WO2019091083 A1 WO 2019091083A1 CN 2018087610 W CN2018087610 W CN 2018087610W WO 2019091083 A1 WO2019091083 A1 WO 2019091083A1
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spray
fan
building
water
bag
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PCT/CN2018/087610
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French (fr)
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俞小林
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俞小林
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00

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  • the invention relates to a scrap metal smelting soot treatment system.
  • soot is the most common dioxin that causes great harm to human health, namely 1,4-dioxadiene.
  • waste metal smelting raw materials such as scrap copper and aluminum are more complicated. Most of them use coke as fuel.
  • the temperature of the feeding port of the melting furnace is low, and it is easy to produce dioxins and is difficult to decompose.
  • traditional environmental protection facilities treat soot. In order to continuously produce a large amount of cooling water, a large amount of water vapor is generated, which wastes water and wastes energy. The purification effect is not thorough enough, and some smoke is still discharged into the atmosphere and pollutes the environment.
  • the invention designs a waste metal smelting soot treatment system capable of effectively purifying soot for the deficiencies of the prior art.
  • a waste metal smelting dust treatment system including a melting device, a bag dust removing device, a spray dust removing device, and a water circulation processing device;
  • the smelting device comprises a melting furnace, a horizontally disposed precipitation chamber in communication with an upper portion of the melting furnace, and a first flue connected to the precipitation chamber;
  • the bag dust removing device comprises a bag room, wherein the bag room is divided into an upper layer and a lower layer by a horizontal partition, the horizontal partition is provided with a plurality of through holes, and the through hole is sleeved on one side of the upper layer, and the bag is placed a fan is connected to a side wall of the lower layer, and a stainless steel plate is disposed near an outlet of the fan, and an outlet of the fan is aligned with a surface of the stainless steel plate, and an inlet of the fan 1 is connected to the first flue.
  • a second flue is connected to an upper layer of the baghouse;
  • the spray dust removing device comprises a spray building, the middle of the spray building is provided with a longitudinal partition, the spray floor is divided into a left part and a right part, the upper part of the longitudinal partition has a notch, and the right side of the spray building is connected below the side of the spray building.
  • There is a fan 2 the inlet of the fan 2 is connected to the second flue, and a water tank is arranged above the spray building, and the water tank is connected with a spray pipe, and the spray pipe sprays the interior of the spray building.
  • the outlet of the fan 2 is provided with a spray ring, and the spray ring is connected to the water tank, and the lower part of the spray building is connected to a chimney below;
  • the water circulation treatment device includes a cooling pool, a sedimentation tank and a desulfurization tank connected in series, the cooling pool is connected to the spray building, and the desulfurization tank is connected to the water tank by a water pump, and the desulfurization tank is provided with soda ash or lime. Water, dechlorination agent.
  • the melting furnace is provided with a water jacket layer, and the water jacket layer is connected to a steam turbine through a steam pipe, and the steam turbine drives a generator to operate, and the water in the water jacket layer is heated by the temperature of the melting furnace, and further The generation of steam drives the generator to generate electricity, effectively utilizing the energy.
  • an air compressor is further disposed above the spray floor, and the air compressor is connected to the spray pipe to pressurize the spray pipe to atomize the sprayed water.
  • the height of the spray building is 8-20 meters, and the height range can maximize the path through which the smoke passes, effectively improving the dust removal effect, and saving the construction cost of the device.
  • the invention has the following advantages and beneficial effects: the soot generated by the smelting process is sequentially precipitated, filtered and sprayed by a complete device, and the harmful dust can be removed to the utmost extent, and the dust removing effect is excellent, and the experiment proves that The pollutant emissions can be controlled below 20% of the national standard.
  • Figure 1 is a schematic structural view of a smelting apparatus of the present invention
  • FIG. 2 is a schematic structural view of a bag dust removing device of the present invention
  • Figure 3 is a schematic view showing the structure of the spray dust removing device of the present invention.
  • Figure 4 is a schematic view showing the structure of the spray ring of the present invention.
  • Figure 5 is a schematic structural view of a water circulation treatment device of the present invention.
  • Figure 6 is a schematic view showing the structure of a horizontal partition, a cloth bag and a stainless steel plate of the bag room of the present invention
  • Figure 7 is a view showing the positional relationship between an outlet of a fan and a stainless steel plate according to the present invention.
  • a waste metal smelting dust treatment system includes a melting device, a bag dust removing device, a spray dust removing device, and a water circulation processing device;
  • the smelting apparatus includes a smelting furnace 1, a horizontally disposed precipitation chamber 2 communicating with an upper portion of the smelting furnace 1, and a first flue 31 connected to the precipitating chamber 2, and an upper inlet eye 11 is provided at the bottom of the smelting furnace 1. And the lower eye 12, a plurality of air inlet eyes are provided to make the combustion more complete.
  • the upper part of the furnace body is a smelting raw material layer 102, and a feeding port 14 is provided on the side wall of the furnace body for adding raw materials to be smelted.
  • a combustion layer 101 for placing fuel such as coal for combustion heating.
  • the lower part of the furnace body is kept at 1800-2500 degrees Celsius, the middle part of the furnace body is maintained at 1300-1600 degrees Celsius, and the upper part of the furnace body is maintained at 800-1100 degrees Celsius.
  • the increase of temperature contributes to the decomposition of dioxin.
  • the soot generated in the smelting process enters the precipitation chamber 2 for precipitation, and the temperature is lowered to 600-800 degrees Celsius, and the residual soot is discharged into the bag dust removing device through the first flue 31 by the fan pressure.
  • the bag dust removing device includes a bag room 4, which is divided into an upper 41 layer and a lower layer 42 by a horizontal partition 44, and the horizontal partition 44 is provided. There are a plurality of through holes, and the through holes are sleeved on one side of the upper layer 41 with a bag 51 (only one bag is shown in the figure, and all the through holes are sleeved with a bag and strictly block the through holes in actual use).
  • a fan-61 is connected to the side wall of the lower layer 42, and a stainless steel plate 52 is disposed near the outlet of the fan-61. The outlet of the fan-61 is aligned with the surface of the stainless steel plate 52.
  • the flue gas collides with it to generate static electricity, so that particles smaller than the pores of the bag in the flue gas adsorb each other to form larger particles, which are better blocked by the bag 51 and finally fall into the lower layer 42 of the bag room 4.
  • the inlet of the fan-61 is connected to the first flue 31, that is, to the melting device, and the upper layer 42 of the baghouse 4 is connected to the second flue 32, and is connected to the spray dust removing device.
  • two bag houses 4 arranged side by side are shown to produce a better effect, and the number of bag houses 4 can be increased as needed in actual use.
  • the bag room 4 is provided with a door 43 for the worker to enter the cleaning bag when the maintenance is stopped.
  • the spray dust removing device comprises a spray floor 7, and a middle portion of the spray floor 7 is provided with a longitudinal partition 74, which divides the spray floor 7 into left and right portions, and the vertical partition 74
  • the upper part has a notch, and the soot is restricted by the physical passage formed by the left part and the right part, and rises from the right part and then falls to the left part.
  • the fan 2 is connected to the lower side of the right side of the spray building 7, and the fan 2 62
  • the inlet is connected to the second flue 32, and above the spray building 7, a water tank 71 is provided, and the water tank 71 is connected with a spray pipe 73, and the spray pipe 73 sprays the inside of the spray building 7, the fan
  • the outlet of the second 62 is provided with a spray ring 63.
  • the spray ring 63 is an annular shape, and a plurality of nozzles are arranged on the ring shape.
  • the annular center is the outlet of the fan 2 62, and the spray ring 63 is connected to the water tank 72.
  • the soot is sprayed, and the spray building 7 is connected to a chimney 8 below the left side.
  • the soot is sprayed in the spray building 7 to cause the remaining soot to sink into the circulating water body under the action of atomized water vapor for treatment.
  • the water circulation treatment device includes a cooling pool 91, a sedimentation tank 92, and a desulfurization tank 93 connected in series, and the cooling pool 91 is connected to the spray floor 7 for collecting dust particles attached thereto after spraying.
  • the sewage, the desulfurization tank 93 is connected to the water tank 71 through a water pump 94.
  • the desulfurization tank 93 is provided with soda ash or lime water, a dechlorination agent, and other chemical products for eliminating all possible environmental pollution elements in the exhaust gas.
  • the smelting furnace 1 is provided with a water jacket layer 13 which is connected to a steam turbine 21 via a steam pipe 15, which drives a generator 22 to operate, using the temperature of the smelting furnace 1 against the water jacket layer 13 The water in the water is heated, which in turn generates steam to drive the generator 22 to generate electricity, effectively utilizing the energy.
  • the melting furnace 1 is also provided with an insulation layer to prevent the heat from being dissipated too quickly to reduce energy consumption.
  • An air compressor 72 is further disposed above the spray floor 7, and the air compressor 72 is connected to the spray pipe 73, and pressurizes the spray pipe 73 to atomize the sprayed water.
  • the height of the spray floor 7 is 8-20 meters, or higher, which can maximize the path through which the smoke passes, increase the contact surface of the smoke receiving the spray, effectively improve the dust removal effect, and save the construction cost of the device. A higher spray building can be built according to actual needs to achieve better results.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chimneys And Flues (AREA)
  • Treating Waste Gases (AREA)
  • Separation Of Particles Using Liquids (AREA)

Abstract

一种废金属冶炼烟尘处理系统，包括熔炼装置、布袋除尘装置、喷雾除尘装置、水循环处理装置，熔炼装置包括熔炼炉（1）、与熔炼炉（1）上部连通的水平设置的沉淀室（2）以及与沉淀室（2）连接的第一烟道（31），布袋除尘装置包括布袋房（4），所述喷雾除尘装置包括喷雾楼（7），水循环处理装置包括依次连接的冷却池（91）、沉淀池（92）和脱硫池（93），该系统除尘效果优良。

Description

一种废金属冶炼烟尘处理系统 技术领域
本发明涉及一种废金属冶炼烟尘处理系统。
背景技术
废金属冶炼过程中会产生大量的金属和非金属氧化物烟尘，其中也包括最普遍也是对人类身体健康造成较大危害的二恶英即1,4-二氧杂环己二烯等烟尘。目前，废铜铝等废金属冶炼原料较为复杂，大多采用焦炭作为燃料，在生产过程中熔炼炉投料口处温度较低，容易产生二恶英且难以分解；另外，传统的环保设施处理烟尘，为了连续生产需要大量冷却水降温，产生大量水蒸气，既浪费水，又浪费能源，净化效果不够彻底，依然有部分烟尘排放至大气中，污染环境。
发明内容
本发明针对现有技术的不足设计了一种可以有效的净化烟尘的废金属冶炼烟尘处理系统。
本发明为实现以上目的，采用如下方案：一种废金属冶炼烟尘处理系统，包括熔炼装置、布袋除尘装置、喷雾除尘装置、水循环处理装置；
所述熔炼装置包括熔炼炉、与熔炼炉上部连通的水平设置的沉淀室以及与沉淀室连接的第一烟道；
所述布袋除尘装置包括布袋房，所述布袋房通过水平隔板分隔为上层和下层，所述水平隔板上设有若干通孔，所述通孔位于上层的一侧套接有布袋，所述下层的侧壁连接有风机一，靠近所述风机一出口处设有不锈钢板，所述风机一出口对准所述不锈钢板的表面，所述风机一的入口与所述第一烟道连接，所述布袋房的上层连接有第二烟道；
所述喷雾除尘装置包括喷雾楼，喷雾楼的中部设有纵向隔板，将所述喷雾楼分隔为左部和右部，纵向隔板的上部具有缺口，所述喷雾楼右部的侧面下方连接有风机二，所述风机二的入口与所述第二烟道连接，所述喷雾楼的上方设有水箱，所述水箱连接有喷雾管，所述喷雾管向所述喷雾楼内部喷雾，所述风机二的出口设有喷雾圈，所述喷雾圈与所述水箱连接，所述喷雾楼左部下方与一烟囱连接；
所述水循环处理装置包括依次连接的冷却池、沉淀池和脱硫池，所述冷却池与所述喷雾楼连接，所述脱硫池通过水泵与所述水箱连接，所述脱硫池内设有纯碱或石灰水、脱氯剂。
进一步的，所述熔炼炉设有水套层，所述水套层通过蒸汽管与一汽轮机连接，所述汽轮机带动一发电机运转，利用熔炼炉的温度对水套层中的水加热，进而产生蒸汽带动发电机发电，有效的利用的能源。
进一步的，喷雾楼上方还设有空压机，所述空压机与所述喷雾管连接，对喷雾管进行加压，对喷雾的水进行雾化处理。
进一步的，所述喷雾楼高度为8-20米，此高度范围可以最大程度的提高烟尘通过的路径，有效提高除尘效果，并且节约装置建设成本。
本发明和现有技术相比，具有如下优点和有益效果：通过一整套装置对熔炼过程产生的烟尘依次进行沉淀、过滤、喷雾处理，可以最大限度的去除有害烟尘，除尘效果优良，经实验证明，污染物的排放量可以控制在国家标准的百分之二十以下。
附图说明
图1为本发明熔炼装置结构示意图；
图2为本发明布袋除尘装置结构示意图；
图3为本发明喷雾除尘装置结构示意图；
图4为本发明喷雾圈结构示意图；
图5为本发明水循环处理装置结构示意图；
图6为本发明布袋房水平隔板和布袋、不锈钢板结构示意图；
图7为本发明风机一出口与不锈钢板位置关系图；
其中：1、熔炼炉，11、上进风眼，12、下进风眼，13、水套层，14、加料口，15、蒸汽管，101、燃烧室，102、熔炼原料层，2、沉淀室，21、汽轮机，22、发电机，31、第一烟道，32、第二烟道，4、布袋房，41、上层，42、下层，43、房门，44、水平隔板，51、布袋，52、不锈钢板，61、风机一，62、风机二，63、喷雾圈，7、喷雾楼，71、水箱，72、空压机、73、喷雾管，74、纵向隔板，8、烟囱，91、冷却池，92、沉淀池，93、脱硫池，94、水泵。
具体实施方式
结合图1至图7，一种废金属冶炼烟尘处理系统，包括熔炼装置、布袋除尘装置、喷雾除尘装置、水循环处理装置；
如图1所示，所述熔炼装置包括熔炼炉1、与熔炼炉1上部连通的水平设置的沉淀室2以及与沉淀室2连接的第一烟道31熔炼炉1底部设有上进风眼11和下进风眼12，设置多个进风眼，使燃烧更加充分。炉体内上部为熔炼原料层102，并在炉体侧壁设有加料口14，用于加入需要熔炼的原料。炉体内下为燃烧层101，用于置入煤炭等燃料进行燃烧加热。炉体下部保持温度在1800-2500摄氏度，炉体中部保持在1300-1600摄氏度，炉体上部保持在800-1100摄氏度，温度的提高有助于二恶英的分解。熔炼过程产生的烟尘进入沉淀室2进行沉淀，并且降低温度至600-800摄氏度，残余的烟尘由风机压强作用通过第一烟道31排入布袋除尘装置。
如图2、图6和图7所示，所述布袋除尘装置包括布袋房4，所述布袋房4通过水平隔板44分隔为上41层和下层42，所述水平隔板44上设有若干通孔，所述通孔位于上层41的一侧套接有布袋51(图中只示出了一个布袋，实际使用中所有通孔均套接有布袋并且严格的封堵住通孔)。所述下层42的侧壁连接有风机一61，靠近所述风机一61出口处设有不锈钢板52，所述风机一61出口对准所述不锈钢板52的表 面，设置不锈钢板52的目的是使烟气与之碰撞产生静电，进而使烟气内的小于布袋孔隙的颗粒互相吸附形成较大的颗粒，以更好的被布袋51阻挡，最后落入布袋房4的下层42。所述风机一61的入口与所述第一烟道31连接，即连接熔炼装置，所述布袋房4的上层42连接有第二烟道32，连接喷雾除尘装置。图中，示出了2个并列设置的布袋房4，以产生更好的效果，实际使用中可根据需要增加布袋房4的数量。布袋房4设有房门43，用于停产检修时工人进入清理布袋。
如图3、图4所示，所述喷雾除尘装置包括喷雾楼7，喷雾楼7的中部设有纵向隔板74，将所述喷雾楼7分隔为左部和右部，纵向隔板74的上部具有缺口，烟尘被左部和右部形成的物理通道所限制，从右部上升然后进入左部下降，所述喷雾楼7右部的侧面下方连接有风机二62，所述风机二62的入口与所述第二烟道32连接，所述喷雾楼7的上方设有水箱71，所述水箱71连接有喷雾管73，所述喷雾管73向所述喷雾楼7内部喷雾，所述风机二62的出口设有喷雾圈63，喷雾圈63为一环状，并在环状上设有若干喷头，环状中心为风机二62的出口，所述喷雾圈63与所述水箱72连接，对烟尘进行喷雾处理，所述喷雾楼7左部下方与一烟囱8连接。烟尘在喷雾楼7内进行喷雾处理，使剩余的烟尘在雾化水汽的作用下下沉进入循环水体进行处理。
如图5所示，所述水循环处理装置包括依次连接的冷却池91、沉淀池92和脱硫池93，所述冷却池91与所述喷雾楼7连接，用于收集喷雾后附带有烟尘颗粒的污水，所述脱硫池93通过水泵94与所述水箱71连接，所述脱硫池93内设有纯碱或石灰水、脱氯剂，以及其他消除废气中所有可能污染环境的元素的化工产品。
所述熔炼炉1设有水套层13，所述水套层13通过蒸汽管15与一汽轮机21连接，所述汽轮机21带动一发电机22运转，利用熔炼炉1的温度对水套层13中的水加热，进而产生蒸汽带动发电机22发电，有效的利用的能源。另外，熔炼炉1内还设有保温层，防止热量散发过快减少能耗。
喷雾楼7上方还设有空压机72，所述空压机72与所述喷雾管73连接，对喷雾管73进行加压，对喷雾的水进行雾化处理。
所述喷雾楼7高度为8-20米，或者更高，可以最大程度的提高烟尘通过的路径，增加烟尘接受喷雾的接触面，有效提高除尘效果，并且节约装置建设成本。可根据实际需要建设更高的喷雾楼，以达到更好的效果。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。

Claims (4)

  1. 一种废金属冶炼烟尘处理系统，包括熔炼装置、布袋除尘装置、喷雾除尘装置、水循环处理装置，其特征在于：
    所述熔炼装置包括熔炼炉、与熔炼炉上部连通的水平设置的沉淀室以及与沉淀室连接的第一烟道；
    所述布袋除尘装置包括布袋房，所述布袋房通过水平隔板分隔为上层和下层，所述水平隔板上设有若干通孔，所述通孔位于上层的一侧套接有布袋，所述下层的侧壁连接有风机一，靠近所述风机一出口处设有不锈钢板，所述风机一出口对准所述不锈钢板的表面，所述风机一的入口与所述第一烟道连接，所述布袋房的上层连接有第二烟道；
    所述喷雾除尘装置包括喷雾楼，喷雾楼的中部设有纵向隔板，将所述喷雾楼分隔为左部和右部，纵向隔板的上部具有缺口，所述喷雾楼右部的侧面下方连接有风机二，所述风机二的入口与所述第二烟道连接，所述喷雾楼的上方设有水箱，所述水箱连接有喷雾管，所述喷雾管向所述喷雾楼内部喷雾，所述风机二的出口设有喷雾圈，所述喷雾圈与所述水箱连接，所述喷雾楼左部下方与一烟囱连接；
    所述水循环处理装置包括依次连接的冷却池、沉淀池和脱硫池，所述冷却池与所述喷雾楼连接，所述脱硫池通过水泵与所述水箱连接，所述脱硫池内设有纯碱石灰水、脱氯剂。
  2. 如权利要求1所述的一种废金属冶炼烟尘处理系统，其特征在于：所述熔炼炉设有水套层，所述水套层通过蒸汽管与一汽轮机连接，所述汽轮机带动一发电机运转。
  3. 如权利要求1所述的一种废金属冶炼烟尘处理系统，其特征在于：喷雾楼上方还设有空压机，所述空压机与所述喷雾管连接。
  4. 如权利要求1所述的一种废金属冶炼烟尘处理系统，其特征在于：所述喷雾楼高度为8-20米。
PCT/CN2018/087610 2017-11-08 2018-05-21 一种废金属冶炼烟尘处理系统 WO2019091083A1 (zh)

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