416M 4575/76 HP/HT Pressure Reactors Operating Instruction Manual
4575/76 HP/HT Pressure Reactors Preface 3 Scope 3 Related Instructions 3 Intended Usage 3 Safety Information 3 General Specifications 3 Explanation of Symbols 4 Environmental Conditions 4 Unpack Carefully 4 Provisions for Lifting and Carrying 4 Cleaning & Maintenance 4 User’s Responsibility 5 Moveable Head Vessels 12 To open the Vessel 12 Before closing the Vessel 12 To Close the Vessel 12 Gas Connections 12 Pressurizing the Vessel 12 D
4575/76 HP/HT Pressure Reactors Preface Scope These instructions describe the installation, operation and maintenance of Parr Series 4575/4576 HP/ HT Pressure Reactors offered in two sizes, 500 mL and 250 mL. They cover the basic steps to be followed when installing these reactors and describe the function of all standard components. They are intended to be used in conjunction with several related instruction sheets listed in the following section.
575/76 HP/HT Pressure Reactors Explanation of Symbols II On position, full power heater switch I On position, half power heater switch O Off Position ~ Alternating Current (AC) This CAUTION symbol may be present on the Product Instrumentation and literature. If present on the product, the user must consult the appropriate part of the accompanying product literature for more information. This CAUTION symbol indicates that the surface may be hot. Protective Earth (PE) terminal.
4575/76 HP/HT Pressure Reactors User’s Responsibility All Parr Reactors and pressure vessels are designed and manufactured with great care to assure safe operation when used within their prescribed temperature and pressure limits. But . . . the basic responsibility for safety when using this equipment rests entirely with the user; who must: 1. Select a reactor or pressure vessel which has the capability, pressure rating, corrosion resistance and design features that are suitable for its intended use.
4575/76 HP/HT Pressure Reactors Installation Pressure and Temperature Limits The working pressure and temperature at which any reactor or pressure vessel can be used will depend upon the design of the vessel and the materials used in its construction. Since all materials lose strength at elevated temperatures, any pressure rating must be stated in terms of the temperature at which it applies. The standard material of construction for Parr Instrument Company Vessels is Type 316 Stainless Steel.
4575/76 HP/HT Pressure Reactors Note: Do not make connections to a Variac, Powerstat or the like to attempt to control the heating output. The heavy inductive load on the primary side of such devices can destroy the internal solid state relay located in the 4848 Controller. 3. Connect the heater cord from the heater into the heater socket on the rear panel of the Series 4848 Reactor Controller.
4575/76 HP/HT Pressure Reactors Identify the Valves Gas Inlet Valve Liquid Sampling Valve The gas inlet valve is easily identified when the bomb is open by noting that it is connected to a dip tube which extends to a point near the bottom of the cylinder. This valve has an attached fitting which provides a socket for attaching the A506HC pressure hose furnished with the reactor. The liquid sampling valve is attached to the same fitting as the gas inlet valve and connected to the same dip tube.
4575/76 HP/HT Pressure Reactors Other Vessel Head Fittings Safety Rupture Disc There is a safety rupture disc attached to the head which is intended to rupture and release the pressure before it reaches a dangerous level. A metal tag wired to the safety head identifies the burst pressure at room temperature for that particular disc. A similar tag is furnished with each replacement disc.
4575/76 HP/HT Pressure Reactors Accessories Internal Cooling Loop A cooling loop is mounted to the underside of the head and sealed with a ferrule and compression nut arrangement. A slow continuous flow of cold water through the cooling loop is an effective means for controlling temperature overshoot, particularly when operating at temperatures below 150 °C. Alternately the cooling loop is used to effectively cool the system at the completion of a reaction.
4575/76 HP/HT Pressure Reactors Air Motor Variable stirring speeds from 300 to 2000 rpm with no spark hazard can be obtained by replacing the standard motor with an air motor. This motor operates on compressed air which must be supplied at 40 psig minimum pressure with at least 20CFM available at that pressure. It is furnished with a speed control valve, oiler, and muffler. To operate reactors equipped with an air motor, connect the air hose to a compressed air line.
4575/76 HP/HT Pressure Reactors How to Use the Vessel Fixed Head Vessels First, lower the heater and push it to the side. Before attempting to remove the split ring open the gas release valve to discharge any internal pressure. Raise the cylinder support holder to the bottom of the cylinder. The head with any attached connection lines will remain in place. Moveable Head Vessels First, open the gas release valve to discharge any internal pressure. Remove the complete vessel assembly from the support stand.
4575/76 HP/HT Pressure Reactors tank when the inlet valve is opened. If there is any possibility that the tank pressure might not be high enough to force gas into the reactor, install a one way check valve (optional) in the gas line to prevent any reverse flow.
4575/76 HP/HT Pressure Reactors Explosion Proof Operation If the local safety code requires that equipment installed in the user’s laboratory must be explosion proof, there are four possible ignition hazards to be considered: 1. The Motor The standard adjustable speed motor is not explosion proof, yet these motors are not unduly hazardous if operated in a well ventilated location where care is taken to prevent the accumulation of explosive gases or vapors.
4575/76 HP/HT Pressure Reactors General Maintenance Notes 1. Periodically inspect all electrical wiring and pressure connections for excessive corrosion. Suspect parts should be replaced by components only supplied by Parr Instrument Company. 2. Always use appropriate wrenches on all fittings and valves. Never use pliers or pipe wrenches. 3. Head and cylinder service fixtures are available for convenience and protection of components during maintenance of your reactor. 4.
4575/76 HP/HT Pressure Reactors Reaction Vessel Parts List Consult the itemized list for your reactor, provided along with this manual. For purpose of reactor identification, the following abbreviation codes are used: * For parts made from alternate materials use the codes shown below as a suffix to the standard part number.
4575/76 HP/HT Pressure Reactors Cylinders* Vessel Heaters Part No. Description 500 mL Models 1834HC2 Cylinder, 500 mL 1834HC7 Cylinder, 500 mL 250 mL Models 1834HC Cylinder, 250 mL 1834HC6 Cylinder, 250 mL Code BDV BDV Heads* Part No.
4575/76 HP/HT Pressure Reactors Internal Fittings Propellers* (Common to all models) Cooling* Part No. 1459HC 1459HC2 1459HC3 1459HC4 1360HC 1359HC2 A92HWAD Description Cooling loop, 500 mL Cooling loop, 250 mL Cooling loop 250 mL Cooling loop 500 mL Ferrule for cooling loop Nut for cooling loop External male connector, T316SS Code Description Dip tube with nut, 500 mL Dip tube with nut, 250 mL Dip tube 500 mL for use with catalyst basket Code GE GE Dip Tubes* Part No.
4575/76 HP/HT Pressure Reactors External Fittings Rupture Disc Port (Common to all models) See manual 231M for a full list of rupture discs. Part No. Description A888HC2 Rupture disc assembly consists of: 433HC4 Safety head outlet, 1/4 NPT(M) 49HC2 Orifice cone 527HC Orifice ring Gage Port Fittings Part No.
4575/76 HP/HT Pressure Reactors Overarm Parts List Driven Pulley for 1/8 hp Motor and Overarm Assembly 1/8 hp Motor and Overarm Assembly Part No. Description Code 1355EES A1554EES Motor, 1/8 hp Motor, 1/8 hp, EMC 857HC 857HC5 Pulley, 600 rpm Pulley, 1700 rpm 847HC9 847HC10 Belt for 600 rpm pulley Belt for 1700 rpm pulley A2562HC3 A2562HC4 Upper Drive Shaft, 7.58" Upper Drive Shaft, 5.68" LD FMD Part No.
4575/76 HP/HT Pressure Reactors 1/4 hp Motor and Overarm Assembly Driven Pulley for 1/4 hp Motor and Overarm Assembly Part No. A388EES A388EEQ A388EET A388EER Description Motor, 1/4hp, 90VDC Motor, 1/4hp, 90VDC, XP Motor, 1/4hp, 180VDC Motor, 1/4hp, 180VDC, XP 695HC5 695HC2 728HC5 728HC6 Pulley, 600 rpm Pulley, 1700 rpm Belt for 600 rpm pulley Belt for 1700 rpm pulley A2564HC7 A2564HC8 Upper Drive Shaft, 9.56" Upper Drive Shaft, 7.66" Code Part No.
4575/76 HP/HT Pressure Reactors Drawings 4575A/76A 500/250 mL Fixed Head 22 Parr Instrument Company
A2952HC13 HEATER ASSY, 250/500mL HT REMOVABLE HEAD 1990HC13 SUPPORT ROD 2554HC34 SUPPORT ROD, HEATER 2555HC4 SUPPORT PLATE 4575B VESSEL ASSEMBLY (500mL SHOWN) 2359HC RETAINER, VESSEL 2207HC PANEL SCREW 6-32 THD 1374HCJV O-RING FKM 1/8 ID 2208HC WASHER, SPLIT 6-32 PNL SCR SC1932SC10 10-32 X 5/8 SHSS 2569HC2 HUB, SCREW; ALUM 1/2-13 THD (5X) 2561HC3 SPACER, MOVABLE; 4575B/76B (5X) TB3724FS12 3/8-24 X .
416M R01 Revision 10/18/13
