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High temperature continuous regeneration process of butyl rubber
CN1754904A
China
Description
translated from Chinese
技术领域technical field
本发明涉及一种高分子聚合物废料的再生技术及设备，特别涉及一种丁基橡胶高温连续再生工艺。The invention relates to a high-molecular polymer waste regeneration technology and equipment, in particular to a high-temperature continuous regeneration process for butyl rubber.
背景技术Background technique
废丁基橡胶是一种宝贵的橡胶资源，我国每年产生数万吨的废丁基橡胶，目前国内外丁基橡胶再生方法有机械法、化学法、高温动态法、电子速辐照法、迪连再生法等。其中机械法是在常温下通过机械轧炼使丁基橡胶分子链降解，该工艺生产效率低，生产成本高、质量差而逐渐淘汰。化学法的特点是将丁基橡胶在酸、碱的作用下，分子链发生破坏而达到再生目的，由于生产过程中产生大量的化学残留物难于处理，员工作业不安全，目前该工艺已被淘汰。电子辐射法的特点是将经冷冻粉碎的胶粉在电子速辐照下使其分子链发生降解，生产的丁基再生橡胶质量稳定性较差，设备投资大，生产成本高，未进入工业化生产。Waste butyl rubber is a precious rubber resource. Tens of thousands of tons of waste butyl rubber are produced in my country every year. At present, butyl rubber regeneration methods at home and abroad include mechanical method, chemical method, high temperature dynamic method, electronic rapid irradiation method, Di even regeneration method, etc. Among them, the mechanical method is to degrade the molecular chain of butyl rubber through mechanical rolling at room temperature. This process has low production efficiency, high production cost and poor quality, so it is gradually eliminated. The characteristic of the chemical method is to destroy the molecular chain of butyl rubber under the action of acid and alkali to achieve the purpose of regeneration. Due to the large amount of chemical residues produced in the production process, it is difficult to handle and the operation of employees is unsafe. At present, this process has been eliminated. . The characteristic of the electron radiation method is to degrade the molecular chain of the frozen and pulverized rubber powder under electron speed irradiation. The quality stability of the produced butyl regenerated rubber is poor, the equipment investment is large, the production cost is high, and it has not entered industrial production. .
目前应用高温动态法生产丁基再生橡胶最为普遍，其原理是先将丁基废橡胶粉碎成30目左右的胶粉，然后与一定量的软化剂、活化剂、水搅拌均匀后装入装有搅拌装置的密闭脱硫罐内，脱硫罐通过电或导热油加热而升温升压，胶料在高温、高压、软化剂作用下分子链发生裂解，从而达到再生目的。其再生条件一般为温度210℃，压力2.0Mpa，时间4小时，该工艺存在缺点主要有：At present, the high-temperature dynamic method is the most common way to produce butyl regenerated rubber. The principle is to crush butyl waste rubber into rubber powder of about 30 meshes, then mix it with a certain amount of softener, activator, and water, and then put it into a In the closed desulfurization tank of the stirring device, the desulfurization tank is heated by electricity or heat conduction oil to increase the temperature and pressure, and the molecular chain of the rubber is cracked under the action of high temperature, high pressure and softener, so as to achieve the purpose of regeneration. The regeneration conditions are generally temperature 210°C, pressure 2.0Mpa, and time 4 hours. The disadvantages of this process mainly include:
1.丁基橡胶是一种耐高温材料，动态脱硫罐最高温度为210℃，因此造成丁基橡胶分子链降解不彻底，胶料门尼粘度值高达60以上。1. Butyl rubber is a high-temperature-resistant material. The maximum temperature of the dynamic desulfurization tank is 210°C, so the degradation of the molecular chain of butyl rubber is not complete, and the Mooney viscosity value of the rubber material is as high as 60 or more.
2.生产的丁基橡胶加工性较差，收缩率高达30％以上。2. The butyl rubber produced has poor processability, and the shrinkage rate is as high as 30% or more.
3.胶料出缸时产生大量废气，造成二次污染。3. A large amount of exhaust gas is produced when the rubber material is discharged from the cylinder, causing secondary pollution.
4.整个工艺间隙式生产、质量不稳定，员工劳动强度大。4. The entire process is intermittently produced, the quality is unstable, and the labor intensity of employees is high.
5.不能再生树脂硫化的丁基橡胶(树脂硫化的丁基橡胶耐高温性能更好，在动态脱硫罐内根本不起反应)。5. Resin vulcanized butyl rubber cannot be regenerated (resin vulcanized butyl rubber has better high temperature resistance and does not react at all in the dynamic desulfurization tank).
发明内容Contents of the invention
本发明是为了解决现有技术丁基橡胶再生中存在的问题，而提供的一种丁基橡胶高温连续再生工艺，该工艺可实现丁基橡胶的连续再生，提高效率，并可消除再生过程中的二次污染。The present invention provides a high-temperature continuous regeneration process for butyl rubber in order to solve the problems existing in the regeneration of butyl rubber in the prior art. This process can realize continuous regeneration of butyl rubber, improve efficiency, and eliminate the secondary pollution.
本发明采取的技术措施是，一种丁基橡胶高温连续再生工艺，其特点是，包括以下步骤：The technical measure that the present invention takes is, a kind of butyl rubber high temperature continuous regeneration process, it is characterized in that, comprises the following steps:
a、原料预处理a. Raw material pretreatment
将作为原料的废丁基橡胶剪除非丁基橡胶成份，然后清洗干净，清洗完后用金属探测器进行探测，去除其中的金属杂质；The waste butyl rubber used as raw material is cut off the non-butyl rubber component, then cleaned, and then detected with a metal detector to remove the metal impurities;
b、粉碎b. Crushing
将经过预处理的废丁基橡胶原料用粉碎机进行粉碎，原料为硫黄硫化丁基橡胶时采用一沟一光开放式粉碎机进行粉碎，控制胶粉细度为5-20目，原料为树脂硫化丁基橡胶时采用高速合金磨轮进行粉碎，控制胶粉细度小于30目；The pretreated waste butyl rubber raw material is crushed with a pulverizer. When the raw material is sulfur vulcanized butyl rubber, it is pulverized with a groove-one light open pulverizer. The fineness of the rubber powder is controlled to be 5-20 mesh, and the raw material is resin. When vulcanizing butyl rubber, high-speed alloy grinding wheels are used for crushing, and the fineness of the rubber powder is controlled to be less than 30 mesh;
c、配料c. Ingredients
将粉碎好的胶粉通过上料链斗定量送入混合器，然后按配比加入计量好的活化剂和软化剂并搅拌均匀；Feed the pulverized rubber powder quantitatively into the mixer through the feeding chain hopper, then add the measured activator and softener according to the proportion and stir evenly;
d、喂料d. Feeding
将上述混合料通过下料器分配到螺杆脱硫机的装料斗，由变频输送机送入强制下料器，由强制下料器喂入螺杆脱硫机的机腔；Distribute the above-mentioned mixture to the loading hopper of the screw desulfurizer through the feeder, send it into the forced feeder by the frequency conversion conveyor, and feed it into the machine chamber of the screw desulfurizer through the forced feeder;
e、脱硫再生e. Desulfurization regeneration
混合料在螺杆脱硫机的机腔内由螺杆推动前进的过程中，胶料在活化剂和软化剂的作用及高温、剪切力的共同作用下完成脱硫再生；When the mixture is pushed forward by the screw in the cavity of the screw desulfurizer, the desulfurization and regeneration of the rubber is completed under the action of the activator and softener, high temperature and shear force;
f、精炼f. Refining
脱硫后的胶料从螺杆脱硫机出来后，直接通过输送装置送入精炼机进行精炼；After the desulfurized rubber comes out of the screw desulfurizer, it is directly sent to the refining machine through the conveying device for refining;
g、过滤g. filter
精炼后的胶料通过传送机送入过滤机进行过滤；The refined rubber is sent to the filter through the conveyor for filtration;
h、成型h. Forming
过滤后的胶料用成型机成型为块状成品。The filtered rubber material is formed into a block-shaped finished product with a molding machine.
上述丁基橡胶高温连续再生工艺，其中，步骤c中所述的胶粉与软化剂、活化剂的配比重量如下：The above-mentioned butyl rubber high-temperature continuous regeneration process, wherein the proportioning weight of the rubber powder, softener and activator described in step c is as follows:
原料为硫黄硫化丁基橡胶时，由其胶粉100份配软化剂1-4份、活化剂0.1-0.3份；When the raw material is sulfur vulcanized butyl rubber, 100 parts of its rubber powder is mixed with 1-4 parts of softener and 0.1-0.3 parts of activator;
原料为树脂硫化丁基橡胶时，由其胶粉100份配软化剂3-8份。When the raw material is resin vulcanized butyl rubber, 100 parts of its rubber powder is mixed with 3-8 parts of softener.
上述丁基橡胶高温连续再生工艺，其中，步骤c中所述的软化剂为石蜡基橡胶油，所述的活化剂为多烷基苯酚二硫化物(420)。The high-temperature continuous regeneration process for butyl rubber, wherein the softener in step c is paraffin-based rubber oil, and the activator is polyalkylphenol disulfide (420).
上述丁基橡胶高温连续再生工艺，其中，步骤c中所述的进料、活化剂和软化剂的配比计量和加入以及搅拌均实行自动操作，其过程为：胶粉通过上料链斗送入混合器，混合器置于秤量传感器上，当进入混合器的胶粉达到规定重量后上料链斗停止送料，软化剂、活化剂泵自动开启计量，达到规定重量后泵自动关闭，软化剂、活化剂箱下面的电磁阀自动打开，已秤量好的软化剂活化剂流入混合器中，当软化剂、活化剂箱重量去皮置零后电磁阀自动关闭，混合器开始搅拌，搅拌一定时间后停止，然后按一定的时间间隔供料。The above-mentioned high-temperature continuous regeneration process for butyl rubber, wherein the proportioning, metering, adding and stirring of the feed, activator and softener described in step c are all automatically operated, and the process is as follows: the rubber powder is sent through the feeding chain hopper When the rubber powder entering the mixer reaches the specified weight, the feeding chain hopper stops feeding, and the softener and activator pumps automatically start metering. After reaching the specified weight, the pumps automatically shut down. 1. The solenoid valve under the activator box opens automatically, and the softener activator that has been weighed flows into the mixer. When the weight of the softener and activator box is peeled and reset to zero, the solenoid valve automatically closes, and the mixer starts to stir for a certain period of time. Then stop, and then feed according to a certain time interval.
上述丁基橡胶高温连续再生工艺，其中，步骤e中所述的螺杆脱硫机的机腔顺序分为7个加热反应区间和5个冷却区间，各区间内分别装有电加热模块，各冷却区间内分别装有冷却装置，将各区间的温度控制在规定的范围内。The above-mentioned high-temperature continuous regeneration process for butyl rubber, wherein the cavity of the screw desulfurizer described in step e is divided into 7 heating reaction zones and 5 cooling zones in sequence, each zone is equipped with an electric heating module, and each cooling zone Cooling devices are installed inside to control the temperature of each section within the specified range.
上述丁基橡胶高温连续再生工艺，其中，所述的螺杆脱硫机的机腔内各区间的温度控制范围如下：The above-mentioned butyl rubber high-temperature continuous regeneration process, wherein, the temperature control range of each interval in the machine cavity of the screw desulfurizer is as follows:
原料为硫黄硫化丁基橡胶时，第一加热反应区：290-360℃，第二加热反应区：290-360℃，第三加热反应区：290-360℃，第四加热反应区：290-360℃，第五加热反应区：290-360℃，第六加热反应区：290-360℃，第七加热反应区：260-330℃，第一冷却区：180-200℃，第二冷却区：120-180℃，第三冷却区：80-120℃，第四冷却区：60-80℃，第五冷却区：60-80℃；When the raw material is sulfur vulcanized butyl rubber, the first heating reaction zone: 290-360°C, the second heating reaction zone: 290-360°C, the third heating reaction zone: 290-360°C, the fourth heating reaction zone: 290- 360°C, the fifth heating reaction zone: 290-360°C, the sixth heating reaction zone: 290-360°C, the seventh heating reaction zone: 260-330°C, the first cooling zone: 180-200°C, the second cooling zone : 120-180℃, the third cooling zone: 80-120℃, the fourth cooling zone: 60-80℃, the fifth cooling zone: 60-80℃;
原料为树脂硫化丁基橡胶时，第一加热反应区：360-400℃，第二加热反应区：360-400℃，第三加热反应区：360-400℃，第四加热反应区：360-400℃，第五加热反应区：360-400℃，第六加热反应区：360-400℃，第七加热反应区：260-330℃，第一冷却区：180-200℃，第二冷却区：120-180℃，第三冷却区：80-120℃，第四冷却区：60-80℃，第五冷却区：60-80℃。When the raw material is resin vulcanized butyl rubber, the first heating reaction zone: 360-400°C, the second heating reaction zone: 360-400°C, the third heating reaction zone: 360-400°C, the fourth heating reaction zone: 360- 400℃, the fifth heating reaction zone: 360-400℃, the sixth heating reaction zone: 360-400℃, the seventh heating reaction zone: 260-330℃, the first cooling zone: 180-200℃, the second cooling zone : 120-180°C, the third cooling zone: 80-120°C, the fourth cooling zone: 60-80°C, the fifth cooling zone: 60-80°C.
上述丁基橡胶高温连续再生工艺，其中，步骤e中所述的螺杆脱硫机的主机转速控制如下：原料为硫黄硫化丁基橡胶时控制在150-250转/分；原料为树脂硫化丁基橡胶时控制在200-300转/分。The above-mentioned butyl rubber high-temperature continuous regeneration process, wherein, the host speed of the screw desulfurizer described in step e is controlled as follows: when the raw material is sulfur vulcanized butyl rubber, it is controlled at 150-250 rpm; the raw material is resin vulcanized butyl rubber Time control at 200-300 rpm.
上述丁基橡胶高温连续再生工艺，其中，步骤f中所述的精炼机的辊距小于0.1mm。The above-mentioned high-temperature continuous regeneration process for butyl rubber, wherein the roller distance of the refiner described in step f is less than 0.1mm.
上述丁基橡胶高温连续再生工艺，其中，步骤g中所述的过滤机的过滤筛网为60-100目。The above-mentioned high-temperature continuous regeneration process for butyl rubber, wherein the filter screen of the filter described in step g is 60-100 mesh.
一种用于丁基橡胶高温连续再生工艺中的螺杆脱硫机，其特点是，包括机座、安装在机座上并顺序相连的电机、减速箱和机腔以及与减速箱相连并横贯机腔的螺杆；A screw desulfurizer used in the high-temperature continuous regeneration process of butyl rubber, which is characterized in that it includes a machine base, a motor installed on the machine base and connected in sequence, a reduction box and a machine cavity, and the machine cavity is connected with the reducer box and traverses the machine cavity. the screw;
所述的机腔顺序设有7个加热反应区间和5个冷却区间，各区间内分别装有电加热模块，各冷却区间内分别装有冷却装置，机腔的尾部设有排气孔；The machine cavity is sequentially provided with 7 heating reaction zones and 5 cooling zones, each zone is equipped with an electric heating module, each cooling zone is equipped with a cooling device, and the tail of the machine cavity is provided with an exhaust hole;
所述的螺杆为双螺杆，螺杆结构采用分段等深不等距螺槽与分段密炼齿合块以及反向螺槽相组合。The screw is twin-screw, and the screw structure adopts a combination of segmented equal-depth and unequal-distance screw grooves, segmented banburying tooth blocks and reverse screw grooves.
本发明由于采用了以上技术方案，使其与现有技术相比，具有以下的优点和特点：Compared with the prior art, the present invention has the following advantages and characteristics due to the adoption of the above technical scheme:
1、本发明根据丁基橡胶耐高温的特点，采用连续法，在高温(温度控制在240-400℃)、常压、热氧、剪切力及软化剂溶胀作用下，使丁基橡胶中的C-S、S-S链或C-O-C键迅速裂解，在机腔内即完成整个再生过程，再生时间仅为10-15分钟，并且有效保证了丁基橡胶的原有特性，橡胶的气密性、拉伸强度与原胶基本保持一致，门尼值20-60之间可随意调选，控制范围为±5，满足不同用户的使用要求。1. According to the high temperature resistance characteristics of butyl rubber, the present invention adopts continuous method to make the butyl rubber The C-S, S-S chain or C-O-C bond of the butyl rubber is rapidly cracked, and the entire regeneration process is completed in the machine cavity. The regeneration time is only 10-15 minutes, and the original characteristics of butyl rubber are effectively guaranteed. The strength is basically consistent with the original rubber, the Mooney value can be adjusted freely between 20-60, and the control range is ±5, which can meet the requirements of different users.
2、由于橡胶具有一定的弹性并容易粘接成团，如果采用普通的螺杆下料装置进行喂料，其速度不均匀，断断续续，有时胶粉根本喂不下去，因此本发明特设计了一个强制下料器，下料斗置于变频输送机上，其工作面非常大，通过变频输送机将胶粉送到强制下料器上，强制下料器螺旋较深，通过高速旋转将胶料强行喂入螺杆脱硫机，这样保证了胶料喂入速度的均匀性。2. Since rubber has certain elasticity and is easy to bond into agglomerates, if an ordinary screw feeding device is used for feeding, the speed is uneven and intermittent, and sometimes the rubber powder cannot be fed at all. Feeder, the hopper is placed on the frequency conversion conveyor, its working surface is very large, the rubber powder is sent to the forced feeder through the frequency conversion conveyor, the forced feeder has a deep spiral, and the rubber is forcibly fed through high-speed rotation Screw desulfurizer, which ensures the uniformity of rubber feeding speed.
3、胶料在强制喂料过程中将把一部分的空气带入机腔，机腔内温度高，空气受热而膨胀，这样容易造成胶料在挤出时放炮，产品不连续，影响产品质量的稳定性。由于本发明在机腔上设置了排气孔，可将再生过程中受热膨胀的空气从排气孔排出，杜绝了放炮等现象，机腔两端置于常压下，促进了机腔内胶料的热氧化。3. The rubber will bring part of the air into the machine cavity during the forced feeding process. The temperature in the machine cavity is high, and the air will expand when heated. This will easily cause the rubber to be fired during extrusion, and the product will be discontinuous, which will affect the quality of the product. stability. Because the invention has vent holes on the machine cavity, the air heated and expanded during the regeneration process can be discharged from the vent holes, which eliminates the phenomenon of blasting, etc., and the two ends of the machine cavity are placed under normal pressure, which promotes the glue in the machine cavity. material thermal oxidation.
4、丁基橡胶粉碎特点有别于其它橡胶，胶料在轧炼过程中易粘接结团，不易成粉，现有技术一般用切割机切成片或用塑料造粒机造粒，或用冷冻法进行粉碎，这些方法都存在一定的弊病，切割成片不利于丁基橡胶快速再生，而冷冻法粉碎成本太高。本发明结合硫黄硫化丁基橡胶和树脂硫化丁基橡胶的不同特点，选用一沟一光开放式粉碎机粉碎硫黄硫化丁基橡胶，胶料轧炼成5-20目胶粉即可；树脂硫化丁基橡胶选用高速合金磨轮式粉碎机进行粉碎，胶粉细度达30目以上，以上两种规格胶粉均能满足脱硫要求。4. The pulverization characteristics of butyl rubber are different from other rubbers. The rubber material is easy to bond and agglomerate during the rolling process, and it is not easy to be powdered. In the prior art, it is generally cut into pieces with a cutting machine or granulated with a plastic granulator, or There are certain disadvantages in these methods of crushing by freezing. Cutting into pieces is not conducive to the rapid regeneration of butyl rubber, and the cost of crushing by freezing is too high. The present invention combines the different characteristics of sulfur vulcanized butyl rubber and resin vulcanized butyl rubber, and selects a groove-one light open type pulverizer to pulverize sulfur vulcanized butyl rubber, and the rubber material can be milled into 5-20 mesh rubber powder; resin vulcanized The butyl rubber is pulverized by a high-speed alloy grinding wheel pulverizer, and the fineness of the rubber powder reaches more than 30 meshes. The rubber powder of the above two specifications can meet the desulfurization requirements.
5、由于本发明中的螺杆脱硫机将机腔分为7个加热反应区间和5个冷却区间，每一区间安装独立的电加热模块，由PC分别进行控制，每一冷却区间安装有冷却水装置，冷却水通过电磁阀进行控制，当温度高于规定温度时，冷却水管上的电磁阀自动打开，进行降温冷却，当温度低于规定温度时，电磁阀自动关闭，这样就能保证每个区间的温度一直控制在规定的范围之内。冷却区间温度控制由高到低逐渐下降，挤出的再生胶温度低于80℃，没有热气，从而杜绝了环境污染。5. Since the screw desulfurizer in the present invention divides the chamber into 7 heating reaction zones and 5 cooling zones, each zone is equipped with an independent electric heating module, which is controlled by the PC respectively, and each cooling zone is equipped with cooling water The cooling water is controlled by a solenoid valve. When the temperature is higher than the specified temperature, the solenoid valve on the cooling water pipe is automatically opened to cool down. When the temperature is lower than the specified temperature, the solenoid valve is automatically closed, so that each The temperature of the interval has been controlled within the specified range. The temperature control in the cooling zone decreases gradually from high to low, and the temperature of the extruded reclaimed rubber is lower than 80°C without hot air, thus preventing environmental pollution.
6、本发明根据再生丁基橡胶的特点，采用双螺杆，螺杆结构采用分段等深不等距螺槽与分段密炼齿合块以及反向螺槽相组合，通过增大螺杆的压缩比，确保胶料在机腔内受到足够的剪切和磨擦力，促进丁基橡胶快速再生。6. According to the characteristics of regenerated butyl rubber, the present invention adopts twin-screws, and the screw structure adopts the combination of segmented equal-depth and unequal-distance screw grooves, segmented banburying tooth blocks and reverse screw grooves. By increasing the compression of the screw Ratio, to ensure that the rubber is subjected to sufficient shear and friction in the machine cavity, and promote the rapid regeneration of butyl rubber.
7、本发明中脱硫后的胶料直接进行精炼，大大降低了再生电耗，精炼时精炼机辊距小于0.1mm，精炼机一次精炼后通过传送机喂入过滤机进行过滤，过滤筛网为60-100目，可确保再生丁基橡胶气密性不受影响。7. In the present invention, the rubber material after desulfurization is directly refined, which greatly reduces the power consumption of regeneration. During refining, the roller pitch of the refiner is less than 0.1mm. After the refiner is refined once, it is fed into the filter by the conveyor for filtration. The filter screen is 60-100 mesh, which can ensure that the airtightness of recycled butyl rubber will not be affected.
采用本发明的工艺生产的丁基再生橡胶质量指标超过日本JIS K6313：1999标准，其对比数据如表1所示。The butyl regenerated rubber quality index that adopts technology production of the present invention exceeds Japanese JIS K6313: 1999 standard, and its comparison data are as shown in table 1.
表1
注：日本JIS K6313：1999标准对丁基再生橡胶不进行细分，统称丁基再生橡胶。Note: Japan's JIS K6313: 1999 standard does not subdivide butyl reclaimed rubber, collectively referred to as butyl reclaimed rubber.
附图说明Description of drawings
本发明的性能特征通过以下的实施例及其附图进一步描述。The performance characteristics of the present invention are further described by the following examples and accompanying drawings.
图1为本发明工艺的生产流程图；Fig. 1 is the production flowchart of technique of the present invention;
图2为本发明中的螺杆脱硫机的结构示意图。Fig. 2 is a schematic structural view of the screw desulfurizer in the present invention.
具体实施方式Detailed ways
本发明中的丁基橡胶高温连续再生工艺可结合图1说明如下：Butyl rubber high temperature continuous regeneration process among the present invention can be described as follows in conjunction with Fig. 1:
废丁基橡胶1进厂后，由专职检验人员进行检验，剪除补丁等非丁基橡胶成份，然后用清洗机2进行清洗，将内胎上的泥沙等杂质清洗干净，清洗完后用金属探测器3进行探测，如有气门嘴、铁钉等金属一并剪除干净，处理完后用粉碎机4进行粉碎。根据硫黄硫化丁基橡胶和树脂硫化丁基橡胶的不同特点，选用不同的粉碎方法。硫黄硫化丁基橡胶采用一沟一光开放式粉碎机进行粉碎，将丁基橡胶轧炼成5-20目粗胶粉即可；树脂硫化丁基橡胶采用高速合金磨轮进行粉碎，胶粉细度大于30目。粉碎好的胶料通过自动输送装置送入装料斗5，然后再通过上料输送链斗6送入物料混合器7，整个混合器置于秤量传感器8上，到达一定量后上料输送链斗6自动停止送料，然后活化剂秤量箱9、软化剂秤量箱10里的软化剂、活化剂自动输入物料混合器7，然后搅拌8分钟，这一系列的工作都由PC机控制自动完成，胶粉与软化剂、活化剂配比如表2所示：After the waste butyl rubber 1 enters the factory, it is inspected by full-time inspectors, and the non-butyl rubber components such as patches are cut off, and then cleaned with a cleaning machine 2 to clean the sediment and other impurities on the inner tube. After cleaning, use a metal detector Device 3 detects, and if there are metals such as air valves and iron nails, they are cut off together, and pulverized with pulverizer 4 after processing. According to the different characteristics of sulfur vulcanized butyl rubber and resin vulcanized butyl rubber, different crushing methods are selected. Sulfur-vulcanized butyl rubber is crushed with a groove-one-light open type pulverizer, and the butyl rubber is rolled into 5-20 mesh coarse rubber powder; resin vulcanized butyl rubber is crushed with a high-speed alloy grinding wheel, and the fineness of the rubber powder Greater than 30 mesh. The crushed rubber is sent to the loading hopper 5 through the automatic conveying device, and then sent to the material mixer 7 through the feeding conveyor chain bucket 6, and the whole mixer is placed on the weighing sensor 8, and after reaching a certain amount, the feeding conveyor chain bucket 6. Automatically stop feeding, and then the softener and activator in the activator weighing box 9 and softener weighing box 10 are automatically input into the material mixer 7, and then stirred for 8 minutes. This series of work is automatically completed by the control of the PC. Glue The proportioning ratio of powder, softener and activator is shown in Table 2:
表2
胶料搅拌均匀后通过下料器11分配到螺杆脱硫机12上的装料斗13，装料斗下装有变频输送机14，将胶料送入强制下料器15，通过强制下料器将胶料送入螺杆脱硫机12的机腔，胶料在高温、剪切力作用下完成整个再生过程，胶料从喂料口进入机腔到出料口出来仅需10-15分钟，整个机腔分为7个加热反应区间和5个冷却区间，每个区间分别装有电加热模块，温度可以自动调节控制，每个冷却区间分别装有冷却装置，通过电磁水阀的控制起到冷却作用，从而确保温度控制在规定的范围之内，丁基再生橡胶具体的再生条件如表3所示：After the rubber material is evenly stirred, it is distributed to the loading hopper 13 on the screw desulfurizer 12 through the feeder 11, and the frequency conversion conveyor 14 is installed under the loading hopper, and the rubber material is sent to the forced feeder 15, and the rubber is discharged through the forced feeder. The material is fed into the machine cavity of the screw desulfurizer 12, and the rubber material completes the entire regeneration process under the action of high temperature and shear force. It only takes 10-15 minutes for the rubber material to enter the machine cavity from the feed port to the discharge port. It is divided into 7 heating reaction zones and 5 cooling zones. Each zone is equipped with an electric heating module, and the temperature can be automatically adjusted and controlled. Each cooling zone is equipped with a cooling device, which plays a cooling role through the control of the electromagnetic water valve. To ensure that the temperature is controlled within the specified range, the specific regeneration conditions of butyl regenerated rubber are shown in Table 3:
表3
表3(续)
脱硫后的胶料不需捏炼，直接通过输送装置送入精炼机16进行精炼，精炼机辊距为0.07-0.1mm，精炼后的胶料通过传送机17将胶料送入过滤机18进行过滤，过滤筛网为60-100目，过滤后的胶料用成型机19成型，称量后即得块状成品20。图中21为软化剂罐，22为活化剂罐。The desulfurized rubber material does not need to be kneaded, and is directly sent to the refiner 16 through the conveying device for refining. The roller distance of the refiner is 0.07-0.1mm. Filtration, the filter screen is 60-100 mesh, the filtered rubber material is formed by a molding machine 19, and the block-shaped finished product 20 is obtained after weighing. Among the figure, 21 is a softener tank, and 22 is an activator tank.
参见图2，本发明中的螺杆脱硫机12，包括基座121、安装在基座上并顺序相连的电机122、减速箱123和机腔124以及与减速箱相连并横贯机腔的螺杆125。机腔124顺序设有7个加热反应区间1241和5个冷却区间1242，各区间内分别装有电加热模块(未图示)，各冷却区间内分别装有冷却装置(未图示)，机腔的尾部设的排气孔1243。螺杆125为双螺杆，螺杆结构采用分段等深不等距螺槽与分段密炼齿合块以及反向螺槽相组合。Referring to Fig. 2, the screw desulfurizer 12 in the present invention includes a
下面结合实施例进一步说明本发明。Below in conjunction with embodiment further illustrate the present invention.
实施例一Embodiment one
以硫黄硫化丁基橡胶为原料，经过预处理后用一沟一光开放式粉碎机进行粉碎，控制胶粉细度为5-20目，将粉碎好的胶粉通过上料链斗定量送入混合器，然后按原料100重量份加入石蜡基橡胶油3重量份、多烷基苯酚二硫化物(420)0.2重量份的配比加入石蜡基橡胶油和多烷基苯酚二硫化物并搅拌均匀；接着将上述混合料通过下料器分配到螺杆脱硫机的装料斗，由变频输送机送入强制下料器，由强制下料器喂入螺杆脱硫机的机腔进行脱硫再生，在再生过程各区间的温度控制如下：第一加热反应区：300-330℃，第二加热反应区：300-330℃，第三加热反应区：300-330℃，第四加热反应区：300-330℃，第五加热反应区：300-330℃，第六加热反应区：300-330℃，第七加热反应区：240-280℃，第一冷却区：180-200℃，第二冷却区：120-180℃，第三冷却区：80-120℃，第四冷却区：60-80℃，第五冷却区：60-80℃；主机转速控制在150-200转/分。脱硫后的胶料从螺杆脱硫机出来后，直接通过输送装置送入精炼机进行精炼。精炼后的胶料通过传送机送入过滤机进行过滤，过滤机的过滤筛网选择60目。过滤后的胶料用成型机成型为本发明的一种再生丁基橡胶块状成品。Sulfur vulcanized butyl rubber is used as raw material, and after pretreatment, it is crushed with a groove-one-light open type pulverizer, and the fineness of the rubber powder is controlled to be 5-20 mesh, and the pulverized rubber powder is quantitatively sent into the Mixer, then add 3 parts by weight of paraffin-based rubber oil and 0.2 parts by weight of polyalkylphenol disulfide (420) according to 100 parts by weight of raw materials, add paraffin-based rubber oil and polyalkylphenol disulfide and stir evenly Then, the above-mentioned mixture is distributed to the loading hopper of the screw desulfurizer through the feeder, and is sent into the forced feeder by the frequency conversion conveyor, and is fed into the cavity of the screw desulfurizer by the forced feeder for desulfurization and regeneration. The temperature control of each section is as follows: the first heating reaction zone: 300-330°C, the second heating reaction zone: 300-330°C, the third heating reaction zone: 300-330°C, the fourth heating reaction zone: 300-330°C , the fifth heating reaction zone: 300-330°C, the sixth heating reaction zone: 300-330°C, the seventh heating reaction zone: 240-280°C, the first cooling zone: 180-200°C, the second cooling zone: 120 -180°C, the third cooling zone: 80-120°C, the fourth cooling zone: 60-80°C, the fifth cooling zone: 60-80°C; the main engine speed is controlled at 150-200 rpm. After the desulfurized rubber comes out of the screw desulfurizer, it is directly sent to the refining machine through the conveying device for refining. The refined rubber is sent to the filter through the conveyor for filtration, and the filter screen of the filter is selected to be 60 mesh. The filtered sizing material is molded into a regenerated butyl rubber block-shaped finished product of the present invention with a molding machine.
实施例二Embodiment two
以树脂硫化丁基橡胶为原料，经过预处理后用高速合金磨轮进行粉碎，控制胶粉细度大于30目。将粉碎好的胶粉通过上料链斗定量送入混合器，然后按原料100重量份加入石蜡基橡胶油5重量份，并搅拌均匀；接着将上述混合料通过下料器分配到螺杆脱硫机的装料斗，由变频输送机送入强制下料器，由强制下料器喂入螺杆脱硫机的机腔进行脱硫再生，在再生过程各区间的温度控制如下：第一加热反应区：370-390℃，第二加热反应区：370-390℃，第三加热反应区：370-390℃，第四加热反应区：370-390℃，第五加热反应区：370-390℃，第六加热反应区：370-390℃，第七加热反应区：250-270℃，第一冷却区：180-200℃，第二冷却区：120-180℃，第三冷却区：80-120℃，第四冷却区：60-80℃，第五冷却区：60-80℃。主机转速控制在20-30转/分。脱硫后的胶料从螺杆脱硫机出来后，直接通过输送装置送入精炼机进行精炼。精炼后的胶料通过传送机送入过滤机进行过滤，过滤机的过滤筛网选择90目。过滤后的胶料用成型机成型为本发明的一种再生丁基橡胶块状成品。Resin vulcanized butyl rubber is used as raw material, and after pretreatment, it is crushed with high-speed alloy grinding wheel, and the fineness of the rubber powder is controlled to be greater than 30 mesh. Feed the crushed rubber powder quantitatively into the mixer through the feeding chain hopper, then add 5 parts by weight of paraffin-based rubber oil according to 100 parts by weight of raw materials, and stir evenly; then distribute the above-mentioned mixture to the screw desulfurizer through the feeder The loading hopper is sent to the forced feeder by the frequency conversion conveyor, and the forced feeder is fed into the cavity of the screw desulfurizer for desulfurization regeneration. The temperature control of each section during the regeneration process is as follows: the first heating reaction zone: 370- 390°C, the second heating reaction zone: 370-390°C, the third heating reaction zone: 370-390°C, the fourth heating reaction zone: 370-390°C, the fifth heating reaction zone: 370-390°C, the sixth heating Reaction zone: 370-390°C, seventh heating reaction zone: 250-270°C, first cooling zone: 180-200°C, second cooling zone: 120-180°C, third cooling zone: 80-120°C, The fourth cooling zone: 60-80°C, the fifth cooling zone: 60-80°C. The host speed is controlled at 20-30 rpm. After the desulfurized rubber comes out of the screw desulfurizer, it is directly sent to the refining machine through the conveying device for refining. The refined rubber material is sent to the filter through the conveyor for filtration, and the filter screen of the filter is selected to be 90 mesh. The filtered sizing material is molded into a regenerated butyl rubber block-shaped finished product of the present invention with a molding machine.
实施例三Embodiment three
以硫黄硫化丁基橡胶为原料，经过预处理后用一沟一光开放式粉碎机进行粉碎，控制胶粉细度为5-20目，将粉碎好的胶粉通过上料链斗定量送入混合器，然后按原料100重量份加入石蜡基橡胶油4重量份、多烷基苯酚二硫化物(420)0.3重量份的配比加入石蜡基橡胶油和多烷基苯酚二硫化物并搅拌均匀；接着将上述混合料通过下料器分配到螺杆脱硫机的装料斗，由变频输送机送入强制下料器，由强制下料器喂入螺杆脱硫机的机腔进行脱硫再生，在再生过程各区间的温度控制如下：第一加热反应区：320-350℃，第二加热反应区：320-350℃，第三加热反应区：320-350℃，第四加热反应区：320-350℃，第五加热反应区：320-350℃，第六加热反应区：320-350℃，第七加热反应区：250-280℃，第一冷却区：180-200℃，第二冷却区：120-180℃，第三冷却区：80-120℃，第四冷却区：60-80℃，第五冷却区：60-80℃；主机转速控制在15-20转/分。脱硫后的胶料从螺杆脱硫机出来后，直接通过输送装置送入精炼机进行精炼。精炼后的胶料通过传送机送入过滤机进行过滤，过滤机的过滤筛网选择80目。过滤后的胶料用成型机成型为本发明的一种再生丁基橡胶块状成品。Sulfur vulcanized butyl rubber is used as raw material, and after pretreatment, it is crushed with a groove-one-light open type pulverizer, and the fineness of the rubber powder is controlled to be 5-20 mesh, and the pulverized rubber powder is quantitatively sent into the Mixer, then add 4 parts by weight of paraffin-based rubber oil and 0.3 parts by weight of polyalkylphenol disulfide (420) according to 100 parts by weight of raw materials, add paraffin-based rubber oil and polyalkylphenol disulfide and stir evenly Then, the above-mentioned mixture is distributed to the loading hopper of the screw desulfurizer through the feeder, and is sent into the forced feeder by the frequency conversion conveyor, and is fed into the cavity of the screw desulfurizer by the forced feeder for desulfurization and regeneration. The temperature control of each section is as follows: the first heating reaction zone: 320-350°C, the second heating reaction zone: 320-350°C, the third heating reaction zone: 320-350°C, the fourth heating reaction zone: 320-350°C , the fifth heating reaction zone: 320-350°C, the sixth heating reaction zone: 320-350°C, the seventh heating reaction zone: 250-280°C, the first cooling zone: 180-200°C, the second cooling zone: 120 -180°C, the third cooling zone: 80-120°C, the fourth cooling zone: 60-80°C, the fifth cooling zone: 60-80°C; the main engine speed is controlled at 15-20 rpm. After the desulfurized rubber comes out of the screw desulfurizer, it is directly sent to the refining machine through the conveying device for refining. The refined rubber is sent to the filter through the conveyor for filtration, and the filter screen of the filter is 80 mesh. The filtered sizing material is molded into a regenerated butyl rubber block-shaped finished product of the present invention with a molding machine.
实施例四Embodiment four
以树脂硫化丁基橡胶为原料，经过预处理后用高速合金磨轮进行粉碎，控制胶粉细度大于30目。将粉碎好的胶粉通过上料链斗定量送入混合器，然后按原料100重量份加入石蜡基橡胶油8重量份，并搅拌均匀；接着将上述混合料通过下料器分配到螺杆脱硫机的装料斗，由变频输送机送入强制下料器，由强制下料器喂入螺杆脱硫机的机腔进行脱硫再生，在再生过程各区间的温度控制如下：第一加热反应区：380-400℃，第二加热反应区：380-400℃，第三加热反应区：380-400℃，第四加热反应区：380-400℃，第五加热反应区：380-400℃，第六加热反应区：380-400℃，第七加热反应区：260-330℃，第一冷却区：180-200℃，第二冷却区：120-180℃，第三冷却区：80-120℃，第四冷却区：60-80℃，第五冷却区：60-80℃。主机转速控制在20-30转/分。脱硫后的胶料从螺杆脱硫机出来后，直接通过输送装置送入精炼机进行精炼。精炼后的胶料通过传送机送入过滤机进行过滤，过滤机的过滤筛网选择100目。过滤后的胶料用成型机成型为本发明的一种再生丁基橡胶块状成品。Resin vulcanized butyl rubber is used as raw material, and after pretreatment, it is crushed with high-speed alloy grinding wheel, and the fineness of the rubber powder is controlled to be greater than 30 mesh. Feed the crushed rubber powder quantitatively into the mixer through the feeding chain hopper, then add 8 parts by weight of paraffin-based rubber oil according to 100 parts by weight of raw materials, and stir evenly; then distribute the above-mentioned mixture to the screw desulfurizer through the feeder The loading hopper is sent to the forced feeder by the frequency conversion conveyor, and the forced feeder is fed into the cavity of the screw desulfurizer for desulfurization and regeneration. The temperature control of each section during the regeneration process is as follows: the first heating reaction zone: 380- 400℃, the second heating reaction zone: 380-400℃, the third heating reaction zone: 380-400℃, the fourth heating reaction zone: 380-400℃, the fifth heating reaction zone: 380-400℃, the sixth heating Reaction zone: 380-400°C, seventh heating reaction zone: 260-330°C, first cooling zone: 180-200°C, second cooling zone: 120-180°C, third cooling zone: 80-120°C, The fourth cooling zone: 60-80°C, the fifth cooling zone: 60-80°C. The host speed is controlled at 20-30 rpm. After the desulfurized rubber comes out of the screw desulfurizer, it is directly sent to the refining machine through the conveying device for refining. The refined rubber is sent to the filter through the conveyor for filtration, and the filter screen of the filter is selected to be 100 mesh. The filtered sizing material is molded into a regenerated butyl rubber block-shaped finished product of the present invention with a molding machine.