WO2018171026A1 - 旋转压力过滤机试验装置、测试方法及过滤机设计方法 - Google Patents

旋转压力过滤机试验装置、测试方法及过滤机设计方法 Download PDF

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WO2018171026A1
WO2018171026A1 PCT/CN2017/084348 CN2017084348W WO2018171026A1 WO 2018171026 A1 WO2018171026 A1 WO 2018171026A1 CN 2017084348 W CN2017084348 W CN 2017084348W WO 2018171026 A1 WO2018171026 A1 WO 2018171026A1
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Prior art keywords
filter
filter frame
filtrate
buffer tank
washing
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PCT/CN2017/084348
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English (en)
French (fr)
Inventor
赵旭
张万尧
谭永鹏
王天宝
翟向楠
沈延顺
张国海
郭雨
冯小朋
梁元月
谢晓玲
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天华化工机械及自动化研究设计院有限公司
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Application filed by 天华化工机械及自动化研究设计院有限公司 filed Critical 天华化工机械及自动化研究设计院有限公司
Priority to US16/346,460 priority Critical patent/US11099114B2/en
Priority to JP2019536217A priority patent/JP6798033B2/ja
Priority to EA201991249A priority patent/EA201991249A1/ru
Priority to ES17901567T priority patent/ES2943848T3/es
Priority to EP17901567.2A priority patent/EP3524961B1/en
Publication of WO2018171026A1 publication Critical patent/WO2018171026A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
    • G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/084—Testing filters

Definitions

  • the invention relates to the technical field of a rotary pressure filter in the production and preparation of PTA, in particular to a test method for a test device for a rotary pressure filter of PTA (fine terephthalic acid) and CTA (crude terephthalic acid).
  • Rotary pressure filters are widely used in many industries, especially in the PTA industry. The difference in material characteristics has a great influence on the design and selection of pressure filters.
  • the test machine is designed and manufactured according to the large industrial rotary pressure filter, just the volume, etc. The scale is reduced, the various components are not lacking, including the transmission system, so the structure is complicated, and the manufacturing cost is high.) The test is complicated, and the cost is high.
  • the object of the present invention is to provide a rotary pressure filter test device, a rotary pressure filter test device test method and a rotary pressure filter design method, so as to solve the prior art, a small rotary pressure filter test machine can not obtain an accurate slurry. Defects in the test parameters.
  • the present invention provides a rotary pressure filter test apparatus comprising:
  • buffer tank 2 wherein the buffer tank 2 is connected to the surge tank 1 through a first conduit;
  • the filter frame 3 is placed under the buffer tank 2, and connected to the buffer tank 2 through a second pipe;
  • liquid tank 4 the liquid tank 4 is placed under the filter frame 3, and a valve is arranged below the filter frame 3;
  • the electronic scale 5 is placed at the bottom of the liquid receiving tank 4.
  • the above rotary pressure filter test device further comprises a stopwatch 6 for measuring time.
  • the surge tank 1 is connected to a gas storage tank.
  • the present invention also provides a test method for the above-mentioned rotary pressure filter test device, comprising the steps of:
  • Step 1 open the buffer tank feed port, and input the slurry into the buffer tank, so that the slurry enters the filter frame;
  • Step 2 Open the valve of the buffer tank inlet, pass the gas with a pressure of 0.01-2.0Mpa into the buffer tank through the surge tank, open the valve at the bottom of the filter frame, filter; record the filtration time, and record the discharged filtrate. Quality; when the filtrate in the filter frame is discharged to the upper surface of the filter cake, the valve at the bottom of the filter frame and the gas valve are closed, and the gas in the filter frame is vented; the filtrate is sampled to analyze the filtrate component and the impurity content;
  • Step 3 The washing liquid is added to the filter frame through a buffer tank, and the slurry is washed.
  • a gas having a pressure of 0.01-2.0 MPa is introduced into the surge tank 1 and filled into the filter frame through the buffer tank 2.
  • the valve at the bottom of the filter frame 3 is then opened, and the mass of the washed filtrate discharged by the electronic scale 5 is measured so that the mass of the discharged washing filtrate is equal to the mass of the added washing liquid, and the time of the washing process is measured, and the washing filtrate is sampled. Analyze and analyze the composition and impurity content of the washing filtrate;
  • Step 4 The drying gas with a pressure of 0.01-2.0 MPa is introduced into the surge tank 1, and is filled into the filter frame 3 through the buffer tank 2, and then the valve at the bottom of the filter frame 3 is opened, and the amount of discharged liquid is measured by the electronic scale 5 And measuring the time of the drying process, sampling and analyzing the dried filtrate, and analyzing the composition and impurity content of the filtrate after drying;
  • Step 5 Open the filter frame, measure the thickness of the filter cake, take the filter cake sample to analyze the moisture content of the filter cake, and analyze the components and impurities in the filter cake.
  • the slurry is a suspension in which a solid liquid can be freely precipitated and separated.
  • the slurry can be a CTA slurry, a PTA slurry, a catalyst slurry, or a pulverized coal slurry.
  • the gas is nitrogen, compressed air or an inert gas.
  • the filtering step of the second step may be one or more times; the washing step of the third step may be one or more times, and the drying step of the fourth step may be one or more times, and the filtering of the second step
  • the order of the steps, the washing step of the third step, and the drying step of the fourth step can be changed as needed.
  • the surge tank is a pressure reducing valve.
  • the present invention also provides a design method of a rotary pressure filter, which comprises The above test method for the rotary pressure filter test device is as follows:
  • Step 1 open the buffer tank feed port, and input the slurry into the buffer tank, so that the slurry enters the filter frame;
  • Step 2 Open the valve of the buffer tank inlet, pass the gas with a pressure of 0.01-2.0Mpa into the buffer tank through the surge tank, open the valve at the bottom of the filter frame, filter; record the filtration time, and record the discharged filtrate. Quality; when the filtrate in the filter frame is discharged to the upper surface of the filter cake, the valve at the bottom of the filter frame and the gas valve are closed, and the gas in the filter frame is vented; the filtrate is sampled to analyze the filtrate component and the impurity content;
  • Step 3 The washing liquid is added to the filter frame through a buffer tank, and the slurry is washed.
  • a gas having a pressure of 0.01-2.0 MPa is introduced into the surge tank 1 and filled into the filter frame through the buffer tank 2.
  • the valve at the bottom of the filter frame 3 is then opened, and the mass of the washed filtrate discharged by the electronic scale 5 is measured so that the mass of the discharged washing filtrate is equal to the mass of the added washing liquid, and the time of the washing process is measured, and the washing filtrate is sampled. Analyze and analyze the composition and impurity content of the washing filtrate;
  • Step 4 The drying gas with a pressure of 0.01-2.0 MPa is introduced into the surge tank 1, and is filled into the filter frame 3 through the buffer tank 2, and then the valve at the bottom of the filter frame 3 is opened, and the amount of discharged liquid is measured by the electronic scale 5 And measuring the time of the drying process, sampling and analyzing the dried filtrate, and analyzing the composition and impurity content of the filtrate after drying;
  • Step 5 Open the filter frame, measure the thickness of the filter cake, take the filter cake sample to analyze the moisture content of the filter cake, and analyze the components and impurities in the filter cake.
  • the rotary pressure filter testing device of the invention can determine the characteristics of slurry filtration, washing, drying, etc. by testing the filter washing and drying time of the material, the impurity component of the filter cake filtrate, and the moisture content of the filter cake.
  • the experimental device can easily and accurately test the slurry parameters, effectively improve the test reliability and the process is simple, and the method can also be applied to rotary pressure filters of other industries.
  • Fig. 1 is a schematic view showing the structure of a rotary pressure filter test apparatus of the present invention.
  • regulator tank 2 buffer tank
  • FIG. 1 is a schematic flow chart of a rotary pressure filter testing device of the present invention. As shown in FIG. 1, the rotary pressure filter testing device of the present invention comprises:
  • buffer tank 2 wherein the buffer tank 2 is connected to the surge tank 1 through a first conduit;
  • the filter frame 3 is placed under the buffer tank 2, and is connected to the buffer tank 2 through a second pipe, and a valve is disposed below the filter frame 3;
  • liquid tank 4 the liquid tank 4 is placed under the filter frame 3;
  • the electronic scale 5 is placed at the bottom of the liquid receiving tank 4.
  • the rotary pressure filter test apparatus of the present invention further includes a stopwatch 6 for measuring the time of the filtration, washing and drying processes.
  • the surge tank 1 is connected to a gas storage tank 7 in which nitrogen gas, compressed air or other inert gas is stored, and the gas storage tank may be a gas source having a fixed pressure.
  • the present invention provides a test method for a rotary pressure filter test device, comprising the steps of:
  • Step 1 open the buffer tank 2 feed port, and input the slurry into the buffer tank 2, so that the slurry enters the filter frame 3;
  • Step 2 Open the valve of the air inlet of the buffer tank 2, and pass a gas with a certain pressure of 0.01-2.0 MPa through the surge tank 1 into the buffer tank 2, open the valve at the bottom of the filter frame 3, and filter; the recording and filtering time is t, simultaneously recording the mass of the discharged filtrate m; when the filtrate in the filter frame is discharged to be flush with the upper surface of the filter cake, the valve at the bottom of the filter frame 3 and the gas valve are closed, and the gas in the filter frame 3 is vented; the filtrate is taken The sample analysis of the filtrate composition and impurity content;
  • Step 3 The washing liquid is added to the filter frame 3 through the buffer tank, and the filter cake is washed.
  • a gas having a certain pressure of 0.01-2.0 MPa is introduced into the buffer tank 2 through the surge tank 1, and then charged.
  • the valve at the bottom of the filter frame 3 is then opened, and the mass of the washed filtrate discharged by the electronic scale 5 is measured so that the mass of the discharged filtrate is equal to the mass of the added washing liquid, and the time of the washing process is measured, and the washing filtrate is subjected to Sampling analysis, analysis of washing filtrate components and impurity content;
  • Step 4 a certain pressure of 0.01-2.0 MPa of dry gas is passed into the buffer tank 2 through the surge tank 1, and then filled into the filter frame 3, and then the valve at the bottom of the filter frame 3 is opened, and the meter is measured by the electronic scale 5 The amount of liquid discharged, and the time of the drying process is measured, and the dried filtrate is sampled and analyzed to analyze the composition and impurity content of the dried filtrate;
  • Step 5 Open the filter frame 3, measure the thickness of the filter cake, and take the filter cake sample to analyze the moisture content of the filter cake, and analyze the components and impurities in the filter cake.
  • the slurry is a CTA slurry, a PTA slurry, a catalyst slurry, a pulverized coal slurry or any other solid liquid which can be freely precipitated and separated.
  • the gas is nitrogen, compressed air or other inert gas.
  • the filtering step of the second step may be one or more times as needed; the washing step of the third step may be one or more times, and the drying step of the fourth step may be one or more times, the step The order of the second filtration step, the washing step of the third step, and the drying step of the fourth step can be reversed according to the needs of the process.
  • the washing step of the third step is a plurality of times.
  • the filter frame 3 is circular or rectangular, and the filter frame 3 is provided with a filter seat or other filter medium wrapped with a filter cloth.
  • the surge tank can be replaced by a pressure reducing valve or other stabilizing device.
  • the buffer tank 2 can be replaced by other charging buffers; the electronic scale 5 can be replaced by other weighing devices; the stopwatch 6 can be replaced by other timing devices.
  • the present invention also proposes a method for designing a rotary pressure filter, comprising the above test method for a rotary pressure filter test device:
  • Step 1 open the buffer tank feed port, and input the slurry into the buffer tank, so that the slurry enters the filter frame;
  • Step 2 Open the valve of the buffer tank inlet, pass the gas with a pressure of 0.01-2.0Mpa into the buffer tank through the surge tank, open the valve at the bottom of the filter frame, filter; record the filtration time, and record the discharged filtrate. Quality; when the filtrate in the filter frame is discharged to the upper surface of the filter cake, the valve at the bottom of the filter frame and the gas valve are closed, and the gas in the filter frame is vented; the filtrate is sampled to analyze the filtrate component and the impurity content;
  • Step 3 The washing liquid is added to the filter frame through a buffer tank, and the slurry is washed.
  • a gas having a pressure of 0.01-2.0 MPa is introduced into the surge tank 1 and filled into the filter frame through the buffer tank 2.
  • the valve at the bottom of the filter frame 3 is then opened, and the mass of the washed filtrate discharged by the electronic scale 5 is measured so that the mass of the discharged washing filtrate is equal to the mass of the added washing liquid, and the time of the washing process is measured, and the washing filtrate is sampled. Analyze and analyze the composition and impurity content of the washing filtrate;
  • Step 4 Pass a dry gas with a pressure of 0.01-2.0 MPa into the surge tank 1, through the buffer tank 2 Filled into the filter frame 3, and then open the valve at the bottom of the filter frame 3, measure the amount of liquid discharged by the electronic scale 5, and measure the time of the drying process, sample and analyze the dried filtrate, and analyze the filtrate components and impurities after drying. Content;
  • Step 5 Open the filter frame, measure the thickness of the filter cake, take the filter cake sample to analyze the moisture content of the filter cake, and analyze the components and impurities in the filter cake.
  • the test device in the invention has the advantages of short flow, simple equipment and simple test method;
  • the core device in the experimental device is a filter frame, which is a small part of the rotating pressure filter drum, so the structure is simple and the processing cost is Low; while the prior art core equipment rotary pressure filter test machine is finished Designed and manufactured according to the large-scale industrial rotary pressure filter, only the volume is reduced proportionally, and the various components are not lacking, including the transmission system, so the structure is complicated and the manufacturing cost is high;
  • the invention can completely simulate the various processes of the actual operation of the device, including filtration, different times of washing, and different number of drying processes, and can obtain reliable design parameters such as filtering capacity, washing effect and drying effect;
  • each process is independent, intermittent, and does not affect each other.
  • the test results of each process can be independently analyzed and evaluated, so the results are accurate and reliable; the existing rotary pressure
  • the tester of the filter test machine has a large limitation. It is continuous operation like the industrial machine. The test results of each process cannot be directly obtained, and since the processes are connected together, there will be some influence between each other. Get accurate and reliable results.
  • the experimental device of the present invention simplifies a complicated process, and the test device connects several simple devices together, and can completely simulate one or several working processes on a complex device, and the result is accurate. reliable.
  • the invention can well meet the industrial design requirements and is suitable for the rotary pressure filter test of PTA, CTA or other materials.
  • the test method of the rotary pressure filter test device of the present invention can test the parameters of the slurry, and also serves as a test method for the slurry parameter, and the analysis parameters of the filtrate and the filter cake are measured by a filtration, washing and drying step, such as CTA material.
  • the content of acetic acid and the content of impurities such as cobalt and manganese can be applied to the selection design of the rotary pressure filter manufacturing process.

Abstract

一种旋转压力过滤机试验装置，包括稳压罐（1）、缓冲罐（2）、过滤框（3）、接液罐（4）、电子称（5）、秒表（6）。缓冲罐（2）与稳压罐（1）连接；过滤框（3）置于缓冲罐（2）下方，并与缓冲罐（2）连接；接液罐（4）置于过滤框（3）下方；电子称（5）置于接液罐（4）底部。测试时，将一定量的试验浆料加入过滤框（3）中，再将一定压力的气体通入稳压罐（1），通过缓冲罐（2）充入过滤框（3）中，随后打开过滤框（3）底部阀门，计量过滤框（3）中排出母液的量，并计量过滤时间，过滤后的滤饼及母液根据实际需要进行取样分析；随后依次进行洗涤、干燥工序。

Description

旋转压力过滤机试验装置、测试方法及过滤机设计方法 技术领域
本发明涉及PTA生产制备中旋转压力过滤机的技术领域，尤其涉及PTA(精对苯二甲酸)和CTA(粗对苯二甲酸)旋转压力过滤机试验装置测试方法。
背景技术
旋转压力过滤机用途广泛，涉及行业众多，尤其在PTA行业需求率更高，物料特性的差异对压力过滤机的设计选型影响很大。目前，旋转压力过滤机在设计选型时，对于物料特性的测试需要用一台小型的旋转压力过滤机试验机(该试验机完全按照大型工业化的旋转压力过滤机去设计制造，仅仅是体积等比例缩小，各个零部件都不缺少，包括传动系统等，因此结构复杂，制造成本高)去做测试，这样不仅试验流程复杂，成本高。并且，由于有些物料特性特殊，需要进行多次洗涤，多次干燥，而小型旋转压力过滤机试验机体积小，结构上无法设计过多的功能区，这样就无法完全模拟物料要求，进行多次洗涤多次干燥，对于特殊的物料无法得到准确的设计参数。
发明内容
本发明的目的在于提供一种旋转压力过滤机试验装置、旋转压力过滤机试验装置测试方法及旋转压力过滤机设计方法，以解决现有技术采用小型的旋转压力过滤机试验机无法得到准确的浆料测试参数的缺陷。
为实现上述目的，本发明提供一种旋转压力过滤机试验装置，包括：
稳压罐1；
缓冲罐2，所述缓冲罐2通过第一管道与所述稳压罐1连接；
过滤框3，所述过滤框3置于所述缓冲罐2下方，并通过第二管道与所述缓冲罐2连接；
接液罐4，所述接液罐4置于所述过滤框3下方，所述过滤框3下方设有阀门；以及
电子称5，所述电子称5置于所述接液罐4底部。
其中，上述旋转压力过滤机试验装置还包括秒表6，用于计量时间。
较佳地，所述稳压罐1与一气体储存罐连接。
而且，为实现上述目的，本发明还提供上述旋转压力过滤机试验装置测试方法，包括步骤：
步骤一：打开缓冲罐进料口，将浆料输入缓冲罐中，进而使得所述浆料进入到过滤框中；
步骤二：打开缓冲罐进气口的阀门，将具有0.01-2.0Mpa压力的气体通过稳压罐通入缓冲罐中，打开过滤框底部的阀门，进行过滤；记录过滤时间，同时记录排出的滤液质量；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框底部的阀门以及气体阀门，并将过滤框中的气体进行放空；取滤液的样分析滤液成分及杂质含量；
步骤三：将洗涤液通过缓冲罐加入过滤框中，对浆料进行洗涤，在洗涤过程中，将压力为0.01-2.0Mpa的气体通入稳压罐1，并通过缓冲罐2充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出的洗涤滤液的质量，使得排出的洗涤滤液质量等于加入的洗涤液质量，并计量洗涤过程的时间，对洗涤滤液进行取样分析，分析洗涤滤液成分及杂质含量；
步骤四：将压力为0.01-2.0Mpa的干燥气体通入稳压罐1，通过缓冲罐2充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出液体的量，并计量干燥过程的时间，对干燥后的滤液进行取样分析，分析干燥后滤液成分及杂质含量；以及
步骤五：打开过滤框，测量滤饼厚度，取滤饼样分析滤饼的湿含量，分析滤饼中成分及杂质含量。
其中，所述浆料为固液能够自由沉淀分离的悬浊液。所述浆料可为CTA浆料、PTA浆料、催化剂浆料或煤粉浆料。
其中，所述气体为氮气、压缩空气或惰性气体。
其中，所述步骤二的过滤工序可为一次或多次；所述步骤三的洗涤工序可为一次或多次，所述步骤四的干燥工序可为一次或多次，所述步骤二的过滤工序、所述步骤三的洗涤工序、所述步骤四的干燥工序的顺序可以根据需要调换。
其中，所述稳压罐为减压阀。
而且，为实现上述目的，本发明还提供一种旋转压力过滤机设计方法，包 括上述的旋转压力过滤机试验装置测试方法：
步骤一：打开缓冲罐进料口，将浆料输入缓冲罐中，进而使得所述浆料进入到过滤框中；
步骤二：打开缓冲罐进气口的阀门，将具有0.01-2.0Mpa压力的气体通过稳压罐通入缓冲罐中，打开过滤框底部的阀门，进行过滤；记录过滤时间，同时记录排出的滤液质量；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框底部的阀门以及气体阀门，并将过滤框中的气体进行放空；取滤液的样分析滤液成分及杂质含量；
步骤三：将洗涤液通过缓冲罐加入过滤框中，对浆料进行洗涤，在洗涤过程中，将压力为0.01-2.0Mpa的气体通入稳压罐1，并通过缓冲罐2充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出的洗涤滤液的质量，使得排出的洗涤滤液质量等于加入的洗涤液质量，并计量洗涤过程的时间，对洗涤滤液进行取样分析，分析洗涤滤液成分及杂质含量；以及
步骤四：将压力为0.01-2.0Mpa的干燥气体通入稳压罐1，通过缓冲罐2充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出液体的量，并计量干燥过程的时间，对干燥后的滤液进行取样分析，分析干燥后滤液成分及杂质含量；以及
步骤五：打开过滤框，测量滤饼厚度，取滤饼样分析滤饼的湿含量，分析滤饼中成分及杂质含量。
本发明的旋转压力过滤机试验装置及其测试方法、设计方法可通过测试物料的过滤洗涤干燥时间、滤饼滤液中杂质成分、滤饼湿含量来确定浆料过滤、洗涤、干燥等特性，该实验装置可简单准确的测试浆料参数，有效提高试验可靠性且工艺简单，该方法也可用于其它行业的旋转压力过滤机。
附图说明
图1为本发明的旋转压力过滤机试验装置的结构示意图。
其中，附图标记：
1：稳压罐  2：缓冲罐
3：过滤框  4：接液罐
5：电子称  6：秒表
7、气体储存罐
具体实施方式
图1为本发明的旋转压力过滤机试验装置的流程示意图，如图1所示，本发明的旋转压力过滤机试验装置，包括：
稳压罐1；
缓冲罐2，所述缓冲罐2通过第一管道与所述稳压罐1连接；
过滤框3，所述过滤框3置于所述缓冲罐2下方，并通过第二管道与所述缓冲罐2连接，所述过滤框3下方设有阀门；
接液罐4，所述接液罐4置于所述过滤框3下方；
电子称5，所述电子称5置于所述接液罐4底部。
并且，本发明的旋转压力过滤机试验装置还包括秒表6，用于计量过滤、洗涤及干燥工序的时间。
并且，所述稳压罐1与一气体储存罐7连接，所述气体储存罐中存储有氮气、压缩空气或其他惰性气体，此气体储存罐可以为具有固定压力的气源。
进一步，本发明提供旋转压力过滤机试验装置测试方法，包括步骤：
步骤一：打开缓冲罐2进料口，将浆料输入缓冲罐2中，进而使得所述浆料进入到过滤框3中；
步骤二：打开缓冲罐2进气口的阀门，将具有一定压力0.01-2.0MPa的气体通过稳压罐1通入缓冲罐中2，打开过滤框3底部的阀门，进行过滤；记录过滤时间为t，同时记录排出的滤液质量m；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框3底部的阀门以及气体阀门，并将过滤框3中的气体进行放空；取滤液的样分析滤液成分及杂质含量；
步骤三：将洗涤液通过缓冲罐加入过滤框3中，对滤饼进行洗涤，在洗涤过程中，将一定压力0.01-2.0MPa的气体通过稳压罐1通入缓冲罐2中，再充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出的洗涤滤液的质量，使得排出的滤液质量等于加入的洗涤液质量，并计量洗涤过程的时间，对洗涤滤液进行取样分析，分析洗涤滤液成分及杂质含量；
步骤四：将一定压力0.01-2.0MPa的干燥气体通过稳压罐1通入缓冲罐2中，再充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量 排出液体的量，并计量干燥过程的时间，对干燥后的滤液进行取样分析，分析干燥滤液成分及杂质含量；以及
步骤五：打开过滤框3，测量滤饼厚度，同时取滤饼样分析滤饼的湿含量，分析滤饼中成分及杂质含量。
其中，所述浆料为CTA浆料、PTA浆料、催化剂浆料、煤粉浆料或其它所有固液可自由沉淀分离的悬浊液。所述气体为氮气、压缩空气或其它惰性气体。
其中，根据需要，所述步骤二的过滤工序可为一次或多次；所述步骤三的洗涤工序可为一次或多次，所述步骤四的干燥工序可为一次或多次，所述步骤二的过滤工序、所述步骤三的洗涤工序、所述步骤四的干燥工序的顺序能够根据工艺需要调换。较佳地，步骤三的洗涤工序为多次。
其中，所述过滤框3为圆形或矩形，所述过滤框3中装有包着滤布的过滤座或其它过滤介质。所述稳压罐可以为减压阀或其它稳压装置代替。所述缓冲罐2可以用其它加料缓冲装置代替；所述电子秤5可以用其它称重计量装置代替；所述秒表6可以用其它计时装置代替。
另外，本发明还提出了一种旋转压力过滤机设计方法，包括上述旋转压力过滤机试验装置测试方法：
步骤一：打开缓冲罐进料口，将浆料输入缓冲罐中，进而使得所述浆料进入到过滤框中；
步骤二：打开缓冲罐进气口的阀门，将具有0.01-2.0Mpa压力的气体通过稳压罐通入缓冲罐中，打开过滤框底部的阀门，进行过滤；记录过滤时间，同时记录排出的滤液质量；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框底部的阀门以及气体阀门，并将过滤框中的气体进行放空；取滤液的样分析滤液成分及杂质含量；
步骤三：将洗涤液通过缓冲罐加入过滤框中，对浆料进行洗涤，在洗涤过程中，将压力为0.01-2.0Mpa的气体通入稳压罐1，并通过缓冲罐2充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出的洗涤滤液的质量，使得排出的洗涤滤液质量等于加入的洗涤液质量，并计量洗涤过程的时间，对洗涤滤液进行取样分析，分析洗涤滤液成分及杂质含量；
步骤四：将压力为0.01-2.0Mpa的干燥气体通入稳压罐1，通过缓冲罐2 充入过滤框3中，随后将过滤框3底部的阀门打开，通过电子称5计量排出液体的量，并计量干燥过程的时间，对干燥后的滤液进行取样分析，分析干燥后滤液成分及杂质含量；以及
步骤五：打开过滤框，测量滤饼厚度，取滤饼样分析滤饼的湿含量，分析滤饼中成分及杂质含量。
实施例：
1)打开缓冲罐进料口，确保其它阀门处于关闭状态。将11.26kg的CTA浆料倒入缓冲罐中，继而进入到过滤框中。
2)打开缓冲罐进气口的阀门，将设定好的0.5MPa的氮气通入缓冲罐中，打开过滤框底部的阀门，进行过滤，并计时；记录过滤时间为33.6s，同时记录排出的滤液质量4.63kg；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框底部的阀门、氮气阀门，并将过滤框中的氮气进行放空；取滤液的样分析滤液中醋酸含量及钴、锰等杂质含量。
3)将0.5Mpa的干燥气体通入稳压罐，通过缓冲罐充入过滤框中，随后将过滤框底部的阀门打开，通过电子称计量排出液体的质量为2.1kg，并计量干燥过程的时间为11s，对干燥后的滤液进行取样分析，分析干燥滤液中醋酸含量及钴、锰含量。
4)分别将预先配好的醋酸浓度分别为45％、23％、11％、0的水与醋酸混合的洗涤液1.87kg通过缓冲罐加入过滤框中，对滤饼进行洗涤，洗涤过程中的通气步骤与步骤2)相似，在洗涤过程中，对排出的洗涤液进行在线称重并计时，共计洗涤5次，排出的滤液质量均为1.87kg，洗涤时间分别为7.5s、6.3s、5.4s、4.8s，同时将四次排出的洗涤滤液分别取样分析，分析洗涤滤液中醋酸含量及钴、锰等杂质含量。
5)打开过滤框，测量滤饼厚度为150mm，同时取滤饼样分析滤饼的湿含量为15％，分析滤饼中醋酸含量及钴、锰等杂质含量。
工业应用性
1)本发明中的试验装置流程短，设备简单，测试方法简便；本实验装置中核心设备为过滤框，该过滤框是旋转压力过滤机转鼓上的一小部分，所以结构简单，加工成本低；而现有技术的中的核心设备旋转压力过滤机试验机是完 全按照大型工业化的旋转压力过滤机去设计制造，仅仅是体积等比例缩小，各个零部件都不缺少，包括传动系统等，因此结构复杂，制造成本高；
2)本发明可根据物料特性，完全模拟出设备实际运行的各个工序，包括过滤、不同次数的洗涤，不同次数的干燥过程，可以得出可靠的过滤能力、洗涤效果、干燥效果等设计参数；通过该套装置进行测试，每个工序是独立的，间歇的，相互之间不会影响，可以对每个工序的测试结果进行独立分析评定，因此得出的结果准确可靠；现有的旋转压力过滤机试验机测试时局限性较大，它与工业机一样是连续运转的，各个工序的测试效果无法直接得出，并且由于各个工序连在一起，相互之间也会有一定影响，因此无法得出准确可靠的结果。
3)本发明中实验装置将一个复杂的过程简单化，该试验装置将几个简单的设备连在一起，就可以完全真实模拟出一台复杂设备上的一个或几个工作过程，且结果准确可靠。
4)本发明能很好满足工业设计需求，适用于PTA、CTA或其它物料的旋转压力过滤机测试。
5)本发明的旋转压力过滤机试验装置测试方法可对浆料的参数进行测试，也作为浆料参数测试方法，通过过滤、洗涤、干燥步骤测得滤液及滤饼的分析参数，如CTA物料的醋酸含量及钴、锰等杂质含量。并且，本试验装置对浆料参数的测试可应用于旋转压力过滤机制造过程的选型设计。
当然，本发明还可有其它多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种旋转压力过滤机试验装置，其特征在于，包括：
    稳压罐；
    缓冲罐，所述缓冲罐通过第一管道与所述稳压罐连接；
    过滤框，所述过滤框置于所述缓冲罐下方，并通过第二管道与所述缓冲罐连接；
    接液罐，所述接液罐置于所述过滤框下方，所述过滤框下方设有阀门；以及
    电子称，所述电子称置于所述接液罐底部。
  2. 根据权利要求1所述的旋转压力过滤机试验装置，其特征在于，还包括秒表，用于计量时间。
  3. 根据权利要求1所述的旋转压力过滤机试验装置，其特征在于，所述稳压罐与一气体储存罐连接。
  4. 权利要求1的旋转压力过滤机试验装置测试方法，其特征在于，包括：
    步骤一：打开缓冲罐进料口，将浆料输入缓冲罐中，使得所述浆料进入到过滤框中；
    步骤二：打开缓冲罐进气口的阀门，将具有0.01-2.0Mpa压力的气体通过稳压罐通入缓冲罐中，打开过滤框底部的阀门，进行过滤；记录过滤时间，同时记录排出的滤液质量；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框底部的阀门以及气体阀门，并将过滤框中的气体进行放空；取滤液的样分析滤液成分及杂质含量；
    步骤三：将洗涤液通过缓冲罐加入过滤框中，对浆料进行洗涤，在洗涤过程中，将压力为0.01-2.0Mpa的气体通入稳压罐，并通过缓冲罐充入过滤框中，随后将过滤框底部的阀门打开，通过电子称计量排出的洗涤滤液的质量，使得排出的洗涤滤液质量等于加入的洗涤液质量，并计量洗涤过程的时间，对洗涤滤液进行取样分析，分析洗涤滤液成分及杂质含量；
    步骤四：将压力为0.01-2.0Mpa的干燥气体通入稳压罐，通过缓冲罐充入过滤框中，随后将过滤框底部的阀门打开，通过电子称计量排出液体的量，并计量干燥过程的时间，对干燥后的滤液进行取样分析，分析干燥后滤液成分及 杂质含量；以及
    步骤五：打开过滤框，测量滤饼厚度，取滤饼样分析滤饼的湿含量，分析滤饼中成分及杂质含量。
  5. 根据权利要求4所述的旋转压力过滤机试验装置测试方法，其特征在于，所述浆料为固液能够自由沉淀分离的悬浊液。
  6. 根据权利要求4所述的旋转压力过滤机试验装置测试方法，其特征在于，所述浆料为CTA浆料、PTA浆料、催化剂浆料或煤粉浆料。
  7. 根据权利要求4所述的旋转压力过滤机试验装置的浆料参数测试方法，其特征在于，所述气体为氮气、压缩空气或惰性气体。
  8. 根据权利要求4所述的旋转压力过滤机试验装置测试方法，其特征在于，所述步骤二的过滤工序为一次或多次；所述步骤三的洗涤工序为一次或多次，所述步骤四的干燥工序为一次或多次，所述步骤二的过滤工序、所述步骤三的洗涤工序、所述步骤四的干燥工序的顺序能够调换。
  9. 根据权利要求4所述的旋转压力过滤机试验装置测试方法，其特征在于，所述稳压罐为减压阀。
  10. 一种旋转压力过滤机设计方法，其特征在于，包括权利要求4的旋转压力过滤机试验装置测试方法：
    步骤一：打开缓冲罐进料口，将浆料输入缓冲罐中，进而使得所述浆料进入到过滤框中；
    步骤二：打开缓冲罐进气口的阀门，将具有0.01-2.0Mpa压力的气体通过稳压罐通入缓冲罐中，打开过滤框底部的阀门，进行过滤；记录过滤时间，同时记录排出的滤液质量；待过滤框中滤液排至与滤饼上表面平齐时，关闭过滤框底部的阀门以及气体阀门，并将过滤框中的气体进行放空；取滤液的样分析滤液成分及杂质含量；
    步骤三：将洗涤液通过缓冲罐加入过滤框中，对浆料进行洗涤，在洗涤过程中，将压力为0.01-2.0Mpa的气体通入稳压罐，并通过缓冲罐充入过滤框中，随后将过滤框底部的阀门打开，通过电子称计量排出的洗涤滤液的质量，使得排出的洗涤滤液质量等于加入的洗涤液质量，并计量洗涤过程的时间，对洗涤滤液进行取样分析，分析洗涤滤液成分及杂质含量；
    步骤四：将压力为0.01-2.0Mpa的干燥气体通入稳压罐，通过缓冲罐充入 过滤框中，随后将过滤框底部的阀门打开，通过电子称计量排出液体的量，并计量干燥过程的时间，对干燥后的滤液进行取样分析，分析干燥后滤液成分及杂质含量；以及
    步骤五：打开过滤框，测量滤饼厚度，取滤饼样分析滤饼的湿含量，分析滤饼中成分及杂质含量。
PCT/CN2017/084348 2017-03-23 2017-05-15 旋转压力过滤机试验装置、测试方法及过滤机设计方法 WO2018171026A1 (zh)

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