CN101358300B

CN101358300B - Compulsory cooling reduction distilling furnace and preparation method thereof

Info

Publication number: CN101358300B
Application number: CN200810304650XA
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: 2008-09-25
Publication date: 2012-02-15
Anticipated expiration: 2028-09-25
Also published as: CN101358300A

Abstract

The invention discloses a forced cooling type reduction distilling furnace and a manufacturing method thereof. both of an air outlet and a vacuum port for vacuum pumping of the reduction distilling furnace are arranged at the bottom of the furnace hearth of the reduction distilling furnace, an air inlet which is communicated with the furnace hearth of the reduction distilling furnace is arranged at the upper part of the reduction distilling furnace, a induced draft fan is arranged on an air outlet pipe which is connected with the air outlet, and cooling air flows from the upper part to the lower part of the furnace hearth of the reduction distilling furnace under the action of the forced induced air of the induced draft fan so as to forcedly cool a reduction distilling pot which is arranged on the reduction distilling furnace. The invention induces cold air from the upper part of the reduction distilling furnace through the induced draft fan and forces the cold air to flow out from the lower part, so that the reaction surface at the upper part of the reduction distilling pot can be effectively cooled, and the cooling air becomes hot air through heat exchanging after going through the heat exchange and then flows to the lower part of the reduction distilling pot to be favorable for heating the lower part of the reduction distilling pot and preserving heat. The invention has the advantages of good cooling effect and high cooling efficiency.

Description

A kind of Compulsory cooling reduction distilling furnace and preparation method thereof

Technical field

The present invention relates to a kind of Compulsory cooling reduction distilling furnace that is used to produce Titanium Sponge 40-60 mesh and preparation method thereof, belong to the reduction and distillation furnace manufacture technology field.

Background technology

At present, the Titanium Sponge 40-60 mesh manufacturing technique requirent utilizes Mg liquid with TiCl ₄In Ti restore, require the reaction surface temperature to be lower than 1000 ℃.This reaction is in the reduction distillation device of being made up of reduction and distillation furnace and reduction distillation jar, to accomplish, and the adjusting of temperature then need utilize the peripheral reduction and distillation furnace of reduction distillation jar to realize.Because this reduction reaction is thermopositive 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 of available technology adopting air naturally cooling is cooled off the reduction distillation jar; Promptly the conversion zone position is stayed and is established some inlet mouths and air outlet on reduction and distillation furnace; Following, the air outlet utilizes the chimneyeffect of hot flue gas to carry out naturally cooling last with inlet mouth.The defective of this structure is: 1) cooling air adopts the naturally cooling mode, and cooling performance is bad, and superheat usually takes place, and makes the reduction distillation tank skin the more wall titanium of climbing occur, and influences quality product; 2) cooling air is to get into 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 electrically heated to be incubated on the other hand; 3) because reduction reaction is to carry out at the interface of two kinds of liquid; Along with the carrying out of reaction, this reaction surface rises gradually, thus 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 nichrome wire is not divided into groups, so its heats is unsatisfactory; 4) because air 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 inlet mouth 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.

Summary of the invention

The objective of the invention is: provide that a kind of simple in structure, good cooling results, thermo-efficiency and electrical heat energy utilization ratio are high, use properties is stable, and can make quality product and the guaranteed Compulsory cooling reduction distilling furnace of production capacity and preparation method thereof, thereby overcome the deficiency of prior art.

The present invention is achieved in that the making method of a kind of Compulsory cooling reduction distilling furnace of the present invention does; When making is used to support and heats the reduction and distillation furnace of reduction distillation jar; The air outlet of reduction and distillation furnace and the vacuum orifice that vacuumizes usefulness all are arranged on the burner hearth bottom of reduction and distillation furnace; To be arranged on the top of reduction and distillation furnace with the inlet mouth that communicates in the burner hearth of reduction and distillation furnace, and with escape pipe that the air outlet is connected on induced draft fan is set, through the pressure air inducing effect of induced draft fan; Make cooling air flow to the bottom, so that the reduction distillation jar that is contained on the reduction and distillation furnace is forced cooling from the upper furnace of reduction and distillation furnace.

Adopt the concrete structure of the Compulsory cooling reduction distilling furnace of method making of the present invention to be: it comprises furnace shell; In furnace shell, be provided with furnace side liner, bottom lining and the furnace bottom mould material piece of forming burner hearth; On the sidewall of furnace side liner, resistive heater is housed; Be provided with air outlet and vacuum orifice in the bottom of burner hearth, and escape pipe be installed on the air outlet, vacuum-pumping tube is installed on vacuum orifice, be provided with at least one deck on the top of burner hearth at the inlet mouth of same level height; Every layer of inlet mouth is evenly distributed on around the burner hearth; Inlet pipe all is installed on each inlet mouth, all is connected with dismountable seal cover board, on escape pipe, be connected with induced draft fan at the port of each inlet pipe and the port of vacuum-pumping tube.

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

Can the air outlet be located on the medium position of burner hearth bottom furnace bottom mould material piece, and on the air 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 wire spiral, can on the liner of furnace side, be provided with the retaining jar brick that exceeds the wire spiral surface.

Convenient in order to add thermal control, can the wire spiral 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 wire spiral be connected control respectively separately with power supply.

Owing to adopted technique scheme; The present invention introduces freezing air through induced draft fan 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, so promptly help heating and insulation reduction distillation jar bottom through the cooling air after the heat exchange.Therefore; The present invention compared with prior art; The present invention not only has good cooling results, advantage that evaporation efficiency is high, but also have that construction is simple, easy to operate rapidly, use properties is stable, work-ing life is long, can make that quality product and production capacity are guaranteed, advantage such as electrical heat energy utilization ratio height and operation and maintenance cost are low.

Description of drawings

Fig. 1 is a structural representation of the present invention.

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.

Embodiment

Below in conjunction with embodiment the present invention is done further detailed description, but not as limitation of the present invention.

Embodiments of the invention: when making is used to support and heats the reduction and distillation furnace of reduction distillation jar; Adopt the making method of Compulsory cooling reduction distilling furnace of the present invention to implement; The vacuum orifice that is about to the air outlet of reduction and distillation furnace and vacuumizes usefulness all is arranged on the burner hearth bottom of reduction and distillation furnace; To be arranged on the top of reduction and distillation furnace with the inlet mouth that communicates in the burner hearth of reduction and distillation furnace, and with escape pipe that the air outlet is connected on induced draft fan is set, through the pressure air inducing effect of induced draft fan; Make cooling air flow to the bottom, so that the reduction distillation jar that is contained on the reduction and distillation furnace is forced cooling from the upper furnace of reduction and distillation furnace.

During concrete the making; Technical scheme by Compulsory cooling reduction distilling furnace of the present invention is made, and during making, improves at the enterprising row of existing reduction distillation furnace foundation; Be that it comprises furnace shell 1; In furnace shell 1, produce furnace side liner 2, bottom lining 6 and the furnace bottom mould material piece 7 of forming burner hearth 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 wire spiral 4 be connected control respectively separately with power supply; Wire spiral 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, vacuum-pumping tube 5 is arranged on the bottom of stove burner hearth installing escape pipe 8 on the air outlet, on vacuum orifice, installing vacuum-pumping tube 5; Its temperature is lower; Working environment is better, the distillation stage when being in high vacuum in the reduction distillation jar, with being 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 performance, can the air outlet be located on the medium position of burner hearth bottom furnace bottom mould material piece 7, and connect the escape pipe 8 that communicates with the external world on the air outlet; One deck is set at least at the inlet mouth of same level height on the top of burner hearth; Every layer of inlet mouth is evenly distributed on around the burner hearth, and on each inlet mouth, all installs inlet pipe 10, generally speaking; 2～5 layers of inlet mouth 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 inlet mouth of same level height, and every layer of inlet mouth is evenly distributed on around the burner hearth, on each inlet mouth, all install inlet pipe 10 then; All be connected dismountable seal cover board at the port of each inlet pipe 10 and the port of vacuum-pumping tube 5; When the needs reduction and distillation furnace carries out cooling work, can the seal cover board on each inlet pipe 10 be disassembled, when the needs reduction and distillation furnace carries out heating work; Can the seal cover board on each inlet pipe 10 be installed again; When carrying out cooling work, induced draft fan 9 must connected on the escape pipe 8, in the time cooling work need not being carried out; Can induced draft fan 9 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 wire spiral 4, during making, can on the liner of furnace side, produce the retaining jar brick 3 that 2～5 circles are higher than wire spiral 4 surfaces.When wire spiral 4 is installed; Also can wire spiral 4 promptly be divided into 5 groups of controls between the two circle retaining jar bricks 3 in the conversion zone position, every group of 3 wire spirals 4 are established one group of control in the furnace roof section; Every group of 3 wire spirals 4; Establish 3 groups of controls in the stove bottom, every group of 6 wire spirals 4, all wire spirals 4 all can adopt 3 phase wye connections.

During use,, when reduction distillation jar reaction surface is cooled off, at first open that one deck inlet pipe 10 at reaction surface place at reduction phase; This layer of freezing air circumferentially evenly gets into, and directly washes away tank skin, takes away the reduction reaction heat release; Freezing air sharply is heated as high-temperature gas simultaneously, and is downward along tank skin then, carries out heat exchange with reduction distillation jar rest part; AT reduces gradually, after the passage in the furnace bottom mould material piece 7 gets into escape pipe 8, is discharged out of the furnace by induced draft fan 9; Along with reaction surface moves up, open last layer inlet pipe 10, one deck inlet pipe 10 before closing continues reaction surface is cooled off; If reduction distillation jar somewhere temperature does not reach design temperature, can improve through wire spiral 4 heating that start this place.

In the distillation stage, remove induced draft fan 9, close and good seal escape pipe 8 and all 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 furnace side liner (2), bottom lining (6) and the furnace bottom mould material piece (7) of forming burner hearth, resistive heater (4) is housed on the sidewall of furnace side liner (2), it is characterized in that: be provided with air outlet and vacuum orifice in the bottom of burner hearth; And escape pipe (8) is being installed on the air outlet, vacuum-pumping tube (5) is being installed on vacuum orifice; Be provided with on the top of burner hearth that one deck is at the inlet mouth of same level height at least, every layer of inlet mouth is evenly distributed on around the burner hearth, and inlet pipe (10) all is installed on each inlet mouth; All be connected with dismountable seal cover board at the port of each inlet pipe (10) and the port of vacuum-pumping tube (5), on escape pipe (8), be connected with induced draft fan (9).

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

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

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

5. Compulsory cooling reduction distilling furnace according to claim 1 is characterized in that: the wire spiral (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 wire spiral (4) is connected control respectively separately with power supply.