WO2023123524A1 - 一种具有pH自动调节功能的乌洛托品生产装置 - Google Patents

一种具有pH自动调节功能的乌洛托品生产装置 Download PDF

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WO2023123524A1
WO2023123524A1 PCT/CN2022/000035 CN2022000035W WO2023123524A1 WO 2023123524 A1 WO2023123524 A1 WO 2023123524A1 CN 2022000035 W CN2022000035 W CN 2022000035W WO 2023123524 A1 WO2023123524 A1 WO 2023123524A1
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mother liquor
inlet
outlet
regulating valve
production device
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PCT/CN2022/000035
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English (en)
French (fr)
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朱年德
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山东天成万丰投资有限公司
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Publication of WO2023123524A1 publication Critical patent/WO2023123524A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains three hetero rings
    • C07D487/18—Bridged systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means

Definitions

  • the invention relates to the technical field of chemical production, in particular to a urotropine production device with the function of automatic pH adjustment.
  • Hexatropine is an odorless and slightly sweet white crystalline powder. As an important chemical product, it is widely used as phenolic plastic curing agent, aminoplast catalyst, and rubber vulcanization accelerator. In other industries, urotropine can also be used as an anti-shrinkage agent in textile production, a preservative in food processing, and a diuretic.
  • gas phase method uses formaldehyde gas and ammonia gas as raw materials.
  • ammonia gas used as raw materials.
  • the present invention provides a urotropine production device with the function of automatic pH adjustment.
  • the production device can automatically control the amount of ammonia gas and formaldehyde gas introduced according to the pH value of the reaction system, so that the pH value of the reaction system can be maintained within a certain range, which is very important for stabilizing product quality and saving resources.
  • a urotropine production device with a pH automatic adjustment function including an ammoniation reactor and a controller
  • the ammoniation reactor is provided with a mother liquor outlet and a mother liquor inlet
  • the mother liquor outlet and the mother liquor inlet are connected through a circulation pipeline
  • the circulation pipeline is provided with
  • There is an online pH meter, ammonia gas inlet pipe and formaldehyde gas inlet pipe are installed on the ammoniation reactor, the ammonia gas inlet pipe is equipped with an ammonia gas inlet regulating valve, and the formaldehyde gas inlet pipe is equipped with a formaldehyde gas inlet pipe.
  • the air regulating valve, the online pH meter are connected to the controller signal, the ammonia gas intake regulating valve and the formaldehyde gas intake regulating valve are electrically controlled connected to the controller.
  • the circulation pipeline is provided with a mother liquor circulation pump and a cooler, the outlet of the mother liquor communicates with the inlet of the mother liquor circulation pump, the outlet of the mother liquor circulation pump communicates with the inlet of the cooler, and the outlet of the cooler communicates with the inlet of the mother liquor.
  • the online pH meter is installed on the circulation pipeline between the mother liquid circulation pump and the cooler.
  • the circulation pipeline is also provided with a crystallization separation tank, the outlet of the mother liquor of the ammoniation reactor is connected with the inlet of the crystallization separation tank, and the outlet of the crystallization separation tank is connected with the inlet of the mother liquor circulation pump.
  • controller is a PLC controller.
  • the PLC controller includes a PID control module, and the PID control module is used to receive the pH value of the reaction system detected by the online pH meter, and control the opening and closing of the ammonia gas inlet regulating valve and the formaldehyde gas inlet regulating valve according to the pH value.
  • the urotropine production device provided by the present invention has the function of automatic pH adjustment, and the pH value of the circulating mother liquor can be stably controlled within a specified range, effectively ensuring the stability of product quality; at the same time, the amount of ammonia gas introduced is controlled within a reasonable range Internally, the waste of raw materials and the increase of the burden on the absorption tower caused by the excessive introduction of ammonia gas are avoided, and the consumption of resources and energy is reduced.
  • the present invention realizes the automatic control of the pH value by setting the controller, avoids the safety risk caused by the traditional manual operation due to operation errors, and greatly reduces the labor intensity.
  • Fig. 1 is the structural representation of embodiment 1 urotropine production device.
  • Fig. 2 is the structural representation of embodiment 2 urotropine production device.
  • 1-ammoniation reactor 2-circulation pipeline, 3-mother liquid circulation pump, 4-cooler, 5-online pH meter, 6-ammonia gas intake control valve, 7-formaldehyde gas intake control valve, 8-PLC controller, 9-crystallization separation tank.
  • a kind of urotropine production device with pH automatic adjustment function comprises ammoniation reactor 1 and PLC controller 8, and ammoniation reactor 1 is provided with mother liquor outlet and mother liquor inlet, and mother liquor outlet and mother liquor
  • the inlet is connected through the circulation pipeline 2
  • the circulation pipeline 2 is provided with a mother liquor circulation pump 3 and a cooler 4, the outlet of the mother liquor is connected with the inlet of the mother liquor circulation pump 3, the outlet of the mother liquor circulation pump 3 is connected with the inlet of the cooler 4, and the mother liquor circulation pump
  • On-line pH meter 5 is installed on the circulation pipeline between 3 and cooler 4, and the outlet of cooler 4 is communicated with mother liquid inlet;
  • Ammonia reactor 1 is provided with ammonia gas inlet pipe and formaldehyde gas inlet pipe, ammonia gas
  • the air intake pipeline is provided with an ammonia intake regulating valve 6, the formaldehyde gas intake pipeline is provided with a formaldehyde gas intake regulating valve 7, the online pH meter 5 is connected to the controller 8 signal, the
  • the crystallization separation tank 9 is also provided on the circulation pipeline 2, the mother liquor outlet of the ammoniation reactor 1 is connected with the inlet of the crystallization separation tank 9, and the outlet of the crystallization separation tank 9 is connected with the crystallization separation tank 9.
  • the inlet of the mother liquid circulation pump 3 is connected.
  • the PLC controller 8 includes a PID control module, the PID control module is used to receive the pH value of the reaction system detected by the online pH meter 5, and control the ammonia gas inlet regulating valve 6 and the formaldehyde gas inlet according to the pH value. The opening and closing of the gas regulating valve 7.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

一种具有pH自动调节功能的乌洛托品生产装置，包括氨化反应器（1）和PLC控制器（8），氨化反应器（1）设有母液出口与母液进口，母液出口与母液进口通过循环管道（2）连通，循环管道（2）上设有在线pH计（5），氨化反应器（1）上设有氨气进气管道和甲醛气进气管道，氨气进气管道上设有氨气进气调节阀（6），甲醛气进气管道上设有甲醛气进气调节阀（7），在线pH计（5）与控制器（8）信号连接，氨气进气调节阀（6）及甲醛气进气调节阀（7）与控制器（8）电控连接。

Description

一种具有pH自动调节功能的乌洛托品生产装置 技术领域
本发明涉及化工生产技术领域，具体涉及一种具有pH自动调节功能的乌洛托品生产装置。
背景技术
乌洛托品是一种无臭略有甜味的白色结晶粉末，作为重要的化工产品，被广泛用作酚醛塑料固化剂、氨基塑料催化剂、橡胶硫化促进剂。在其他工业上，乌洛托品也可作为纺织品生产防缩剂、食品加工防腐剂、利尿剂等使用。
目前乌洛托品的工业制造方法有气相法和液相法两种，其中气相法以甲醛气和氨气作为原料。为避免副反应、保证产品品质，在气相法生产过程中通常要确保氨气的过量，但这也会造成原料的浪费及后续氨吸收塔的负担。
发明内容
针对乌洛托品生产过程中为保证产品品质通入过量氨气而造成的原料浪费及氨吸收塔负担的技术问题，本发明提供一种具有pH自动调节功能的乌洛托品生产装置，该生产装置能够根据反应体系pH值自动控制氨气及甲醛气的通入量，使反应体系的pH值维持在一定范围内，对稳定产品品质及节约资源非常重要。
本发明的技术方案如下：
一种具有pH自动调节功能的乌洛托品生产装置，包括氨化反应器和控制器，氨化反应器设有母液出口与母液进口，母液出口与母液进口通过循环管道连通，循环管道上设有在线pH计，氨化反应器上设有氨气进气管道和甲醛气进气管道，氨气进气管道上设有氨气进气调节阀，甲醛气进气管道上设有甲醛气进气调节阀，在线pH计与控制器信号连接，氨气进气调节阀及甲醛气进气调节阀与控制器电控连接。
进一步的，循环管道上设有母液循环泵和冷却器，母液出口与母液循环泵的进口连通，母液循环泵的出口与冷却器的进口连通，冷却器的出口与母液进口连通。
进一步的，在线pH计安装在母液循环泵与冷却器之间的循环管道上。
进一步的，循环管道上还设有结晶分离槽，氨化反应器的母液出口与结晶分离槽的进口连通，结晶分离槽的出口与母液循环泵的进口连通。
进一步的，控制器为PLC控制器。
进一步的，PLC控制器包括PID控制模块，PID控制模块用于接收在线pH计检测的反应体系pH值，并根据pH值控制氨气进气调节阀及甲醛气进气调节阀的开合。
本发明的有益效果在于：
本发明提供的乌洛托品生产装置具有pH自动调节功能，循环母液的pH值可被稳定控制在规定区间范围，有效保证了产品品质的稳定；同时氨气通入量被控制在合理的范围内，避免了氨气超过量通入带来的原料浪费及吸收塔负担增大的问题，降低了资源及能源的消耗。
本发明通过设置控制器实现pH值的自动控制，避免传统人工操作因操作失误带来的安全风险，大幅减少了劳动强度。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为实施例1乌洛托品生产装置的结构示意图。
图2为实施例2乌洛托品生产装置的结构示意图。
图中，1-氨化反应器，2-循环管道，3-母液循环泵，4-冷却器，5-在线pH计，6-氨气进气调节阀，7-甲醛气进气调节阀，8-PLC控制器，9-结晶分离槽。
具体实施方式
为了使本技术领域的人员更好地理解本发明中的技术方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
实施例1
如图1所示，一种具有pH自动调节功能的乌洛托品生产装置，包括氨化反应器1和PLC控制器8，氨化反应器1设有母液出口与母液进口，母液出口与母液进口通过循环管道2连通，循环管道2上设有母液循环泵3和冷却器4，母液出口与母液循环泵3的进口连通，母液循环泵3的出口与冷却器4的进口连通，母液循环泵3与冷却器4之间的循环管道上安装有在线pH计5，冷却器4的出口与母液进口连通；氨化反应器1上设有氨气进气管道和甲醛气进气管道，氨气进气管道上设有氨气进气调节阀6，甲醛气进气管道上设有甲醛气进气 调节阀7，在线pH计5与控制器8信号连接，氨气进气调节阀6及甲醛气进气调节阀7与控制器8电控连接。
实施例2
如图2所示，在实施例1的基础上，循环管道2上还设有结晶分离槽9，氨化反应器1的母液出口与结晶分离槽9的进口连通，结晶分离槽9的出口与母液循环泵3的进口连通。
实施例3
在实施例1的基础上，PLC控制器8包括PID控制模块，PID控制模块用于接收在线pH计5检测的反应体系pH值，并根据pH值控制氨气进气调节阀6及甲醛气进气调节阀7的开合。
尽管通过参考附图并结合优选实施例的方式对本发明进行了详细描述，但本发明并不限于此。在不脱离本发明的精神和实质的前提下，本领域普通技术人员可以对本发明的实施例进行各种等效的修改或替换，而这些修改或替换都应在本发明的涵盖范围内/任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。

Claims (6)

  1. 一种具有pH自动调节功能的乌洛托品生产装置，其特征在于，包括氨化反应器和控制器，氨化反应器设有母液出口与母液进口，母液出口与母液进口通过循环管道连通，循环管道上设有在线pH计，氨化反应器上设有氨气进气管道和甲醛气进气管道，氨气进气管道上设有氨气进气调节阀，甲醛气进气管道上设有甲醛气进气调节阀，在线pH计与控制器信号连接，氨气进气调节阀及甲醛气进气调节阀与控制器电控连接。
  2. 如权利要求1所述的具有pH自动调节功能的乌洛托品生产装置，其特征在于，循环管道上设有母液循环泵和冷却器，母液出口与母液循环泵的进口连通，母液循环泵的出口与冷却器的进口连通，冷却器的出口与母液进口连通。
  3. 如权利要求2所述的具有pH自动调节功能的乌洛托品生产装置，其特征在于，在线pH计安装在母液循环泵与冷却器之间的循环管道上。
  4. 如权利要求2所述的具有pH自动调节功能的乌洛托品生产装置，其特征在于，循环管道上还设有结晶分离槽，氨化反应器的母液出口与结晶分离槽的进口连通，结晶分离槽的出口与母液循环泵的进口连通。
  5. 如权利要求1所述的具有pH自动调节功能的乌洛托品生产装置，其特征在于，控制器为PLC控制器。
  6. 如权利要求5所述的具有pH自动调节功能的乌洛托品生产装置，其特征在于，PLC控制器包括PID控制模块，PID控制模块用于接收在线pH计检测的反应体系pH值，并根据pH值控制氨气进气调节阀及甲醛气进气调节阀的开合。
PCT/CN2022/000035 2021-12-28 2022-03-08 一种具有pH自动调节功能的乌洛托品生产装置 WO2023123524A1 (zh)

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CN202011847U (zh) * 2011-04-07 2011-10-19 焦作市润华化学工业有限公司 一种乌洛托品母液循环装置
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