CLAUS REACTOR REFRACTORY DRILLING SYSTEM

Model H6G for 4" flanges size and larger

PRODUCES THE REQUIRED ENTRANCE HOLE FOR THE HTP / HTX THERMOCOUPLE

Download the Delta Controls Model H6G Detailed Data sheet

Download the Delta Controls Model H6G Users Manual

Application

H6G for 4"-6" Flange Size The Delta Controls Refractory Drilling System is used to drill straight, centered holes, through Claus thermal reactor refractory linings. The H6G guide is rigidly mounted on the vessel nozzle flange and works to keep the core drill bit concentric with the nozzle while the well hole is being drilled through the refractory liner. The final result is a straight hole which is properly positioned to accept the refractory well and the thermocouple.

This correct hole allows the refractory protective well to be inserted into the reactor and to automatically be in its proper position. The HTP or HTX thermocouple can then be mounted on the nozzle flange with assurance that its element protective well is correctly positioned on the centerline of the refractory protective well. This proper positioning protects the thermocouple from breakage by allowing the refractory to move in relation to the vessel shell without jamming the element well into the refractory well and breaking it off.

Note that attempting to drill using hand-held positioning of a core drill bit is unacceptable and will not produce a hole usable for the HTP/HTX thermocouple.

Specifications

Flange Size: ANSI 4” 150 to 6” 300 DIN 90 To 175 mm
Nozzle ID : 3.44” (87mm) and Larger
Nozzle Height + Refractory Thickness: Up to 22 inches(560mm) basic: add extension (option EX) if longer
Refractory Thickness: Up to 22” (560mm)
Hole Size: 2.20 Inches (56 mm)
Drill Bit: Diamond core type, requires water flushing
Water Swivel: Bronze bearings, rubber seals, flow control valve, ½” hex drill drive shaft; 3' hose
Drill Motor: ½” chuck size, 50 to 600 RPM variable speed required
Option:
1. Water hose extension: 50 Foot (15 M)
2. Drill bit extension, length as required 12”(300mm), 24” (600mm), or longer.

Diamond cutting fragments are embedded in a ceramometallic matrix. As the diamonds cut and as the hole progresses, the matrix wears away. Dull diamonds tear away and expose new sharp edged diamonds. The torn off diamonds are then mixed in with the refractory cuttings. The cuttings, with still hard diamonds, must be flushed away with water as they form. Flushing promotes rapid cutting, and straight drilling. Water also cools the bit and lengthens its life.

Components of the H6G Refractory Drilling System
	Component	Notes
	Core Drill	22” (558mm) long, 2.2” (56 mm) diameter core drill with diamond cutting matrix
	Water Swivel Assembly	Attaches between the drill motor and the core drill to provide water to the interior of the drill for wet drilling.
	Drill Guide	Bolts to the nozzle flange and guides the core drill to create a centered hole perpendicular to the flange.
	Drill Bearings	These bearings center the core drill in the drill guide during drilling.
	Drill Extension	Attaches between the water swivel and core drill. Used when the nozzle height + refractory thickness is greater than 22” (559mm). H6G Drilling Systems with the –EX option have one or more of these extensions.

Using the H6G Refractory Drilling System

You can download a video (25Mb) illustrating the use of the Drilling System in a thermocouple Installation.

Download the Delta Controls Model H6G Users Manual

Go to Delta Controls Model HTP Thermocouple Page

Go to Delta Controls Home Page

Go to Delta Controls Literature Page

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