CN201476539U

CN201476539U - Forced cooling type reduction distillation furnace

Info

Publication number: CN201476539U
Application number: CN2009203064438U
Authority: CN
Inventors: 陈宁
Original assignee: Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
Current assignee: Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
Priority date: 2008-09-25
Filing date: 2009-07-20
Publication date: 2010-05-19
Anticipated expiration: 2019-07-20

Abstract

The utility model discloses a forced cooling type reduction distillation furnace, which is characterized in that a furnace shell is internally provided with a furnace side liner, a furnace bottom liner and a furnace bottom castable block which are formed into a furnace hearth; the side wall of the furnace side liner is provided with a heating resistance wire; the bottom part of the furnace hearth is provided with an air outlet and a vacuum-pumping port; the air outlet is provided with an air outlet pipe, and the vacuum-pumping port is provided with a vacuum-pumping pipe; the upper part of the furnace hearth is provided with at least one layer of air inlets at the same horizontal height; each air inlet is provided with an air inlet pipe; the port of each air inlet pipe and the port of the vacuum-pumping pipe are connected with a detachable sealing cover plate; and the air outlet pipe is connected with an induced draft fan. The distillation furnace induces cold air from the upper part of the reduction distillation furnace by the induced draft fan, and leads the cold air to flow out from the lower part of the reduction distillation furnace, thus being capable of effectively cooling the reaction surface of the upper part of a reduction distillation retort; after heat exchange, the cooling air is changed into hot air to flow to the lower part of the reduction distillation retort, thus being beneficial to heating and heat preservation of the lower part of the reduction distillation retort. The reduction distillation furnace has the advantages of good cooling effect and high cooling efficiency.

Description

A kind of Compulsory cooling reduction distilling furnace

Technical field

The utility model relates to a kind of Compulsory cooling reduction distilling furnace that is used to produce titanium sponge, belongs to the reduction and distillation furnace manufacture technology field.

Background technology

At present, the titanium sponge manufacturing technique requirent utilizes Mg liquid with TiCl ₄In Ti restore, require the reaction surface temperature to be lower than 1000 ℃.This reaction is to finish in the reduction distillation device of being made up of reduction and distillation furnace and reduction distillation jar, and the adjusting of temperature then needs to utilize the reduction and distillation furnace of reduction distillation jar periphery to realize.Because this reduction reaction is exothermic reaction, it is overheated that the reaction surface temperature is easy to, thereby reduction and distillation furnace will be considered the reduction distillation jar at this place is cooled off.The mode that the available technology adopting air cools off is naturally cooled off the reduction distillation jar, promptly the conversion zone position is stayed and is established some air inlets and gas outlet on reduction and distillation furnace, following, the gas outlet utilizes the stack effect of hot flue gas to carry out the nature cooling last with air inlet.The defective of this structure is: 1) the cooling air adopts the nature type of cooling, and cooling effect is bad, and superheating phenomenon usually takes place, and makes the reduction distillation tank skin the more wall titanium of climbing occur, and influences product quality; 2) the cooling air is to enter from reduction distillation jar medium position, discharge upward to position, reduction distillation jar middle and upper part, air current composition is unreasonable, on the one hand be heated the back high temperature air directly discharging cause heat waste, be that colder position such as reduction distillation jar bottom also needs electrical heating to be incubated on the other hand; 3) because reduction reaction is to carry out at the interface of two kinds of liquid, carrying out along with reaction, this reaction surface rises gradually, thereby the electric heater that requires conversion zone to arrange cut apart careful as far as possible, change requirement with adaptive temperature, but prior art adds thermal control and generally all compares roughly, the heating heating wire is not divided into groups, so its to add thermal effect unsatisfactory; 4) because gas outlet quantity is more, need occupy certain locus, and distance again can not be too short between the air inlet/outlet, makes the layout of air inlet and the number of plies be restricted, be unfavorable for the subsection-inlet cooling; 5) vacuum-pumping tube generally is arranged in the stove middle part in the stove, and this makes this device work under bad environment, causes the loss of a large amount of heats again.Obviously, existing reduction and distillation furnace is not ideal enough.

The utility model content

The purpose of this utility model is: provide a kind of simple in structure, good cooling results, the thermal efficiency and electrical heat energy utilization rate height, serviceability stable, and can make product quality and the guaranteed Compulsory cooling reduction distilling furnace of production capacity, thereby overcome the deficiencies in the prior art.

The utility model is to constitute like this: it comprises furnace shell, in furnace shell, be provided with the furnace side liner of forming burner hearth, bottom lining and furnace bottom water the material feeding piece, on the sidewall of furnace side liner, resistive heater is housed, be provided with gas outlet and vacuum orifice in the bottom of burner hearth, and escape pipe is installed on the gas outlet, vacuum-pumping tube is installed on vacuum orifice, be provided with at least one deck on the top of burner hearth at the air inlet of same level height, every layer of air inlet is evenly distributed on around the burner hearth, air inlet pipe all is installed on each air inlet, all be connected with dismountable seal cover board at the port of each air inlet pipe and the port of vacuum-pumping tube, on escape pipe, be connected with air-introduced machine.

Generally speaking, be provided with 2～5 layers of air inlet on differentiated levels on the top of burner hearth, be 2～8 in the quantity of the air inlet of same level height, and be evenly distributed on around the burner hearth, air inlet pipe all is installed on each air inlet.

The gas outlet can be located at the burner hearth bottom furnace bottom and water on the medium position of material feeding piece, and on the gas outlet, be connected with and the extraneous escape pipe that communicates.

In use, for the reduction distillation jar that prevents to be contained in the reduction and distillation furnace touches resistance wire, can on the liner of furnace side, be provided with the retaining jar brick that exceeds the resistance wire surface.

Convenient in order to heat control, can the resistance wire that be located on the liner sidewall of furnace side is evenly distributed from top to bottom by 3～15 groups, and every group of resistance wire be connected control respectively separately with power supply.

Owing to adopted technique scheme, the utility model is introduced cold air by air-introduced machine from the top of reduction and distillation furnace, and it is flowed out from the bottom, like this can be effectively the reaction surface on reduction distillation jar top be cooled off, and become the lower part that hot blast flows to the reduction distillation jar through the cooling air after the heat exchange, so promptly help heating and insulation to reduction distillation jar bottom.Therefore, the utility model compared with prior art, the utility model not only has good cooling results, advantage that cooling effectiveness is high, but also have that construction is simple, easy to operate rapidly, serviceability is stable, service life is long, can make that product quality and production capacity are guaranteed, advantage such as electrical heat energy utilization rate height and operation and maintenance cost are low.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

What the dotted outline part was represented in the burner hearth in accompanying drawing 1 in the furnace side liner 2 is heated reduction distillation jar.

The specific embodiment

The utility model is described in further detail below in conjunction with embodiment, but not as to restriction of the present utility model.

Embodiment of the present utility model: during making, on existing reduction distillation furnace foundation, improve, be that it comprises furnace shell 1, in furnace shell 1, produce furnace side liner 2, bottom lining 6 and the furnace bottom of forming burner hearth and water material feeding piece 7 by existing mode, and on the sidewall of furnace side liner 2 by 3～15 groups of evenly distributed from top to bottom resistive heaters 4 of installing, and every group of resistance wire 4 be connected control respectively separately with power supply, resistance wire 4 in making same group opens and closes simultaneously, is convenient to temperature control like this; Set out gas port and vacuum orifice in the bottom of burner hearth, and installing escape pipe 8 on the gas outlet, on vacuum orifice, installing vacuum-pumping tube 5, vacuum-pumping tube 5 is arranged on the bottom of stove burner hearth, its temperature is lower, working environment is better, the distillation stage when being in high vacuum in the reduction distillation jar, will be evacuated in the stove, can alleviate reduction distillation tank body inside and outside differential pressure like this, thereby reach the purpose of protection reduction distillation jar; In order to reach better pressure cooling effect, the gas outlet can be located at the burner hearth bottom furnace bottom and water on the medium position of material feeding piece 7, and connect the escape pipe 8 that communicates with the external world on the gas outlet; One deck is set at least at the air inlet of same level height on the top of burner hearth, every layer of air inlet is evenly distributed on around the burner hearth, and on each air inlet, all install air inlet pipe 10, generally speaking, 2～5 layers of air inlet on differentiated levels can be set on the top of burner hearth, and will be controlled at 2～8 scopes in the quantity of the air inlet of same level height, and every layer of air inlet is evenly distributed on around the burner hearth, on each air inlet, all install air inlet pipe 10 then; All be connected dismountable seal cover board at the port of each air inlet pipe 10 and the port of vacuum-pumping tube 5, when the needs reduction and distillation furnace carries out cooling work, seal cover board on each air inlet pipe 10 can be disassembled, when the needs reduction and distillation furnace carries out heating work, seal cover board on each air inlet pipe 10 can be installed again, when carrying out cooling work, air-introduced machine 9 must connected on the escape pipe 8, when not needing to carry out cooling work, air-introduced machine 9 can be pulled down, and adopt the mode of flange seal that it is sealed up the mouth of pipe of escape pipe 8 to get final product.For the reduction distillation jar that prevents to be contained in the reduction and distillation furnace touches resistance wire 4, during making, can on the liner of furnace side, produce the retaining jar brick 3 that 2～5 circles are higher than resistance wire 4 surfaces.When resistance wire 4 is installed, also resistance wire 4 promptly can be divided into 5 groups of controls between the two circle retaining jar bricks 3 in the conversion zone position, every group of 3 resistance wires 4, establish one group of control in the furnace roof section, every group of 3 resistance wires 4, establish 3 groups of controls in the stove bottom, every group of 6 resistance wires 4, all resistance wires 4 all can adopt 3 phase wye connections.

During use, at reduction phase, when reduction distillation jar reaction surface is cooled off, at first open that one deck air inlet pipe 10 at reaction surface place, this layer of cold air circumferentially evenly enters, and directly washes away tank skin, takes away the reduction reaction heat release, cold air sharply is heated as high-temperature gas simultaneously, downward along tank skin then, carry out heat exchange with reduction distillation jar remainder, air themperature reduces gradually, after the passage that furnace bottom waters in the material feeding piece 7 enters escape pipe 8, discharge out of the furnace by air-introduced machine 9; Along with reaction surface moves up, open last layer air inlet pipe 10, one deck air inlet pipe 10 before closing continues reaction surface is cooled off; If reduction distillation jar somewhere temperature does not reach design temperature, can improve by resistance wire 4 heating that start this place.

In the distillation stage, remove air-introduced machine 9, close and good seal escape pipe 8 and all air inlet pipe 10, so that vacuum-pumping tube 5 runnings.

Claims

1. Compulsory cooling reduction distilling furnace, comprise furnace shell (1), in furnace shell (1), be provided with the furnace side liner (2) of forming burner hearth, bottom lining (6) and furnace bottom water material feeding piece (7), resistive heater (4) is housed on the sidewall of furnace side liner (2), it is characterized in that: be provided with gas outlet and vacuum orifice in the bottom of burner hearth, and escape pipe (8) is installed on the gas outlet, vacuum-pumping tube (5) is installed on vacuum orifice, be provided with at least one deck on the top of burner hearth at the air inlet of same level height, every layer of air inlet is evenly distributed on around the burner hearth, air inlet pipe (10) all is installed on each air inlet, all be connected with dismountable seal cover board at the port of each air inlet pipe (10) and the port of vacuum-pumping tube (5), on escape pipe (8), be connected with air-introduced machine (9).

2. Compulsory cooling reduction distilling furnace according to claim 1, it is characterized in that: be provided with 2～5 layers of air inlet on differentiated levels on the top of burner hearth, quantity at the air inlet of same level height is 2～8, and be evenly distributed on around the burner hearth, air inlet pipe (10) all is installed on each air inlet.

3. Compulsory cooling reduction distilling furnace according to claim 1 is characterized in that: the gas outlet is located at the burner hearth bottom furnace bottom and waters on the medium position of material feeding piece (7), and is connected with on the gas outlet and the extraneous escape pipe (8) that communicates.

4. Compulsory cooling reduction distilling furnace according to claim 1 is characterized in that: be provided with the retaining jar brick (3) that exceeds resistance wire (4) surface on furnace side liner (2).

5. Compulsory cooling reduction distilling furnace according to claim 1 is characterized in that: the resistance wire (4) that is located on furnace side liner (2) sidewall is evenly distributed from top to bottom by 3～15 groups, and every group of resistance wire (4) is connected control respectively separately with power supply.