摘要:
In the usual elongated carbon black furnace which is provided at one end with a combustion gas entry section, usually of diameter larger than the remainder of the reactor, in lieu of the usual entry port or ports providing hot combustion gases with which to decompose the make oil or gas to carbon black, there are provided independent, double-entry port or pipes. At each double entry there is an outer port and an inner port or pipe. Usually, the pipe approaches the enlarged section or precombustion chamber somewhat tangentially and at a substantial right angle to the longitudinal axis of the elongated reactor or furnace. Thus, viewing the furnace end-on, the outer port or entry will spew its fluid near and onto the walls of the precombustion chamber while the inner port or entry will deliver its gases to a point nearer the longitudinal axis. By feeding so as to obtain a blanket of relatively cool gas adjacent the walls of the precombustion chamber by means of the outer port and a relatively much hotter gas through the inner port, the walls of the chamber are protected while at the same time the make oil or gas can be subjected immediately to a great deal more heat and higher temperature such that higher yields of carbon black are obtained. A novel furnace precombustion zone structure is disclosed.
摘要:
A method and apparatus for producing carbon black under fine-tuned conditions which comprises measuring a property of the black produced in a tangential introduction of hot gases to produce a vortex operation and adjusting introduction of the hot gases and/or the make oil or gas responsive to said property until it has a desired value. In one embodiment, the adjustment is made manually. In another embodiment, it can be made by a computerized operation. The point of introduction of hot gases can be adjusted by providing at least one movable orifice-carrying element in the conduit supplying the hot combustion gases. The discharge end of the make oil or gas supply pipe can also be relocated according to the measured property.
摘要:
In the usual elongated carbon black furnace which is provided at one end with a combustion gas entry section, usually of diameter larger than the remainder of the reactor, in lieu of the usual entry port or ports providing hot combustion gases with which to decompose the make oil or gas to carbon black, there are provided independent, double-entry port or pipes. At each double entry there is an outer port and an inner port or pipe. Usually, the pipe approaches the enlarged section or precombustion chamber somewhat tangentially and at a substantial right angle to the longitudinal axis of the elongated reactor or furnace. Thus, viewing the furnace end-on, the outer port or entry will spew its fluid near and onto the walls of the precombustion chamber while the inner port or entry will deliver its gases to a point nearer the longitudinal axis. By feeding so as to obtain a blanket of relatively cool gas adjacent the walls of the precombustion chamber by means of the outer port and a relatively much hotter gas through the inner port, the walls of the chamber are protected while at the same time the make oil or gas can be subjected immediately to a great deal more heat and higher temperature such that higher yields of carbon black are obtained. A novel furnace precombustion zone structure is disclosed.A combination of ceramic pieces to form a protection for the metallic walls of a furnace is presented. For the precombustion chamber or section, the pieces have been so conceived as to permit upstream and downstream faces of the inner walls as well as the walls connecting them to be tiled using for each face only two different tiles and for each wall only two different tiles, to permit tangential entry of the gases into the precombustion chamber while imparting a rotational motion to said gases and maintaining said blanket of relatively cool gas adjacent to walls of the precombustion chamber.
摘要:
An apparatus for drying particulate material includes an elongate housing having a chamber therein. A drum is positioned in the housing and has opposite ends thereof extending through open ends of the housing. The drum is mounted for rotation about its longitudinal axis. The exterior surface of the drum and the interior surface of the housing are spaced apart and form an annular space adapted for flow of heating medium therealong. An inlet opens into the annular space and is directed for introducing heating medium in a generally tangential direction relative to the annular space such that the heating medium flows in a generally vortex manner along the length of the annular space to the outlet. A tube is positioned in the drum and extends along a major portion of the length of the drum. The tube is in flow communication with the annular space for receiving heating medium therefrom. The heating medium flows along the tube for heating the particulate material in the drum and the heating medium in the tube is discharged into the interior of the drum for direct contact with the particulate material and further heating thereof. The material to be dried is introduced into one end of the drum and discharged from the other end of the drum after drying.
摘要:
In a carbon black reactor having at least one combustion zone opening into a reaction zone, each combustion zone has opening thereinto, in a generally tangential direction, quench fluid inlet means operably connected to a source of quench fluid. The quench fluid is introduced into the combustion zone to control the temperature of the combustion gases to a desired temperature before the combustion gases are introduced into the reaction zone. Control means is provided for controlling the quench fluid input in response to the temperature of the combustion gases.
摘要:
In the usual elongated carbon black furnace which is provided at one end with a combustion gas entry section, usually of diameter larger than the remainder of the reactor, in lieu of the usual entry port or ports providing hot combustion gases with which to decompose the make oil or gas to carbon black, there are provided independent, double-entry port or pipes. At each double entry there is an outer port and an inner port or pipe. Usually, the pipe approaches the enlarged section or precombustion chamber somewhat tangentially and at a substantial right angle to the longitudinal axis of the elongated reactor or furnace. Thus, viewing the furnace end-on, the outer port or entry will spew its fluid near and onto the walls of the precombustion chamber while the inner port or entry will deliver its gases to a point nearer the longitudinal axis. By feeding so as to obtain a blanket of relatively cool gas adjacent the walls of the precombustion chamber by means of the outer port and a relatively much hotter gas through the inner port, the walls of the chamber are protected while at the same time the make oil or gas can be subjected immediately to a great deal more heat and higher temperature such that higher yields of carbon black are obtained. A novel furnace precombustion zone structure is disclosed.
摘要:
A carbon black pelleter having a pinned shaft rotatably arranged in a cylindrical housing is provided with one or more rows of pins (shell pins) attached to the housing in the lower half of the housing. The shaft pins during one revolution of the shaft are sandwiched between the shell pins, but not more than 1/6 of the entire sandwiching during one revolution of the shaft occurs at the same moment.
摘要:
In a carbon black reactor having at least one combustion zone opening into a reaction zone, each combustion zone has opening thereinto, in a generally tangential direction, quench fluid inlet means operably connected to a source of quench fluid. The quench fluid is introduced into the combustion zone to control the temperature of the combustion gases to a desired temperature before the combustion gases are introduced into the reaction zone. Control means is provided for controlling the quench fluid input in response to the temperature of the combustion gases.
摘要:
In a furnace system for producing carbon black, a primary quench fluid is injected into the combustion products from the furnace to produce effluent. The effluent is passed through a trim quench chamber containing a tubular member. The tubular member has an internal flow path therethrough and is positioned in the housing defining the quench chamber to form an outer flow path therebetween. Part of the effluent flowing through the quench chamber passes through the internal flow path while the remainder passes through the outer flow path. Quench liquid is introduced into the quench chamber for initial contact with substantially only the portion of the effluent passing through the internal flow path.