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Mechanical Seal for Top Insert Agitating/ Stirring Reactor

Min. Order:	1 Piece
Port:	Qingdao, China
Production Capacity:	5000PCS/Year
Payment Terms:	T/T

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Product Description

Company Info

Basic Info.

Model NO.

SEAL

Structure

Optional

Pressure

Optional

Speed

General Speed Mechanical Seal

Temperature

Low-Temperature Mechanical Seal

Performance

Corrosion

Standard

Trademark

Pioneer

Transport Package

Wooden Case

Origin

Shandong

HS Code

8479820090

Product Description

Shaft Seals For Chemical Reactor
A chemical reactor is an enclosed volume in which a chemical reaction takes place. In chemical engineering, it is generally understood to be a process vessel used to carry out a chemical reaction which is one of the classic unit operations in chemical process analysis.Chemical reactor is a kind of pressure vessel used to complete the processes of vulcanization, nitration, hydrogenation, hydrocarbonation, polymerization, esterification, condensation, etc. , which has been widely use in petroleum, chemical, rubber, pesticide, dye, medicine, food. Generally, chemical reactor consists of vessel, driving device, agitator/stirring system, heating/cooling system, shaft seal device. The shaft seal device of chemical reactor included Packing seal type, end-face mechanical seal type, magnetic seal type and etc. Main function of shaft seal device is to help agitator/stirring shaft join together with pressure vessel by preventing leakage, keeping vessel pressure, or excluding contamination.

Features of Mechanical Seal For Agitating/Stirring Reactor
The top-inserted agitating/stirring shaft type reactor is widely used. Because the seal is placed in the top of the vessel, it is in the gas phase space (liquid phase when the material is full). To avoid dry friction in the seal, a certain method of lubrication with cooling device is required. The top-inserted vertical-mounted agitating/stirring shaft has a large aspect ratio and may have low processing and installation accuracy, so it will inevitably produce large deflections.
When the shaft rotating, the following factors will increase the vibration of the shaft: Uneven weight distribution of agitator/stirrer blade; Liquid level is too low or have eddy in the vessel; Uneven medium inlet or not control well of the reaction;Pressure and temperature fluctuations; Deformation of agitating/stirring shaft and vessel caused by pressure and temperature changed; Suddenly changed of agitator speed or viscosity increased of mesium by temperature drop, etc. The top-inserted vertical-mounted agitating/stirring shaft has a large aspect ratio,an intermediate bearing is usually installed to provide a relatively vibration-free working environment for the seal to make the seal running smoothly.

Classifications Of Mechanical Seal

Classifying MethoClassifying Method	Classificationion	Application
By set of sealing end-face	Single sealing face	Pressure of vessel: ≤0.6Mpa-a
By set of sealing end-face	Double sealing face	Pressure of vessel: ≤1.6Mpa-a*
By the pressure of the sealed fluid acting on the seal ring	Balance type	For high & middle pressure reactor
By the pressure of the sealed fluid acting on the seal ring	Non-balance type	For low pressure reactor
By if the position of spring is in/not in the sealed fluid	In in the sealed fluid	For non-corrosive medium
By if the position of spring is in/not in the sealed fluid	Not in the sealed fluid	For corrosive medium
By the number of spring	Single spring	For light load with small shaft diameter
By the number of spring	Multiple springs	For large load with big shaft diameter
By if the spring is rotating with the shaft	Rotating type	Used in most equipment
By if the spring is rotating with the shaft	Stationary type	Use in large sizes or at high rotational speeds
By if end-face is contacted	Contact type	For commonly orking medium
By if end-face is contacted	None-contact type	For flammable, explosive and highly toxic medium

Design of Mechanical Seal For Agitating/Stirring Reactor
Generally, the rotating speed of mechanical seal used for the top-inserted agitating/stirring shaft type reactor is lower, so the specific pressure of the spring can be set larger; the vibration of the stirring shaft would be larger, so the sealling element should be designed more strong and friction ring should adopt the overall structure when sealing the gas; considering the large amount of swing when the stirring shaft rotates, the gap between the mating ring and the shaft should take a larger value. When calculating the specific pressure of the end face of the mechanical seal using for the large shaft diameter top plug-in reactor, the weight of the compensation ring cannot be ignored.
Generally, the type selection of mechanical seal should according to the working medium in reactor, working pressure & temperature, agitating/stirring speed, diameter of agitating/stirring shaft & power of driving motor. Material selection of mechanical seal should according to the working medium & temperature in reactor: sleeve material of mating ring seat: glass lined steel, SiC, Al2O3 Ceramics, Reinforced PTFE, and etc; material of end-face(seal ring & mating ring): SiC-SiC, SiC--Reinforced PTFE, Al2O3 Ceramics-Reinforced PTFE, Al2O3 Ceramics-Modified graphite, and etc. When working pressure lower than 0.4Mpa-a, commonly use single end-face mechanical seal; pressure higher than 0.4Mpa-a use double end-face mechanical seal; pressure higher than 0.6Mpa-a should use double end-face type mechanical seal with auxiliary device; when working temperature higher than 150 deg.C, it can not use material of PTFE; use Integrated with bearing structure type during diameter of agitating/stirring shaft & the power of the stirring motor are relatively large.

Typical Structure of Mechanical Seal For Agitating/Stirring Reactor
Typical Application Model of Mechanical Seal For Agitating/Stirring Reactor
Auxiliary Device Of Mechanical Seal For Agitating/Stirring Reactor

COMMON FAULTS AND PROCESSING METHOD OF MECHANICAL SEAL
CONTACT
SHANDONG PIONEER HEAVY INDUSTRY TECHNOLOGY CO.,LTD.
Address : Changwang Industrial Park, Liushan Town, Linqu County, Weifang City, Shandong Province, P.R.China
Mr. Conan WEI

Address: Changwang Industrial Park, Liushan Town, Linqu County, Weifang, Shandong, China

Business Type: Manufacturer/Factory, Trading Company, Group Corporation

Business Range: Chemicals, Electrical & Electronics, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Service

Management System Certification: ISO 9001, ISO 14001

Main Products: Chemical Reactor, Glass Lined Equipment, Enameled, Heat Exchanger, Pressure Vessel, Wiped Film Evaporator, Vacuum Dryer, Anfd, GMP Equipment, Distillation Column

Company Introduction: Shandong Pioneer Heavy Industry Technology Co., Ltd. is a professional design, manufacture, exporter in glass lined chemical equipment and other chemical equipment with advanced technology, completed production equipment, perfect quality control system and intimate sale and after- sale service.

The company have passed the certification of ISO 9001: 2015 and been approved by government to design & Produce glass lined equipment and chemical equipment as well as pressure vessels of category I and II. And adopt the same testing methods and production processes as well-known foreign companies to guarantee the quality of glass lined equipment and other chemical equipment.

The products included of various standard or none-standard specifications of chemical reactor, storage tank/receiver, distillator, film evaporator, vacuum dryer, filter, separator, metering vessels, heat exchanger, condensers, column systems and various accessories. The company also can specializes in GMP standard products and customized operating unit of chemical process.

Shandong Pioneer Heavy Industry Technology Co., Ltd. Belongs to PIONEER GROUP which have more than 20 years experience specialized on manufacturing glass lined equipment and other chemical equipment, and products have been exported to India, Russia, Thailand, Vietnam, Malaysia, Taiwan, Mexico as well as other countries and regions. We sincerely welcome customers from all over the world to visit our company. We will satisfy you with quality products and considerate services.

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