CN103351009A

CN103351009A - Internal alkali returning steam calcining furnace

Info

Publication number: CN103351009A
Application number: CN2013103145192A
Authority: CN
Inventors: 丁福万; 丁春艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-27
Filing date: 2013-07-24
Publication date: 2013-10-16
Anticipated expiration: 2033-07-24
Also published as: CN103351009B; CN102745723A

Abstract

The invention discloses an internal alkali returning steam calcining furnace, which comprises a furnace end and a furnace body, wherein the furnace end is mounted at the front end of the furnace body, the furnace body comprises an outer furnace barrel and a furnace body base, an alkali raising plate is arranged on the inner wall of the outer furnace barrel, an inner furnace barrel is arranged inside the outer furnace barrel, a thread is formed on the inner wall of the inner furnace barrel, a finished product alkali transportation pipe, a screw conveyer and a screw alkali mixer are arranged inside the furnace end, the screw conveyer is used for transporting finished product alkali, the screw alkali mixer is used for mixing heavy alkali with finished product alkali, and the screw conveyer is arranged in the finished product alkali transportation pipe. The steam calcining furnace solves the sealing problem of the furnace tails of a conventional internal alkali returning calcining furnace and a conventional external alkali returning calcining furnace; the alkali emitting problem of the calcining furnace is solved thoroughly; the sealing effect of the end surface of an inlet of the calcining furnace is improved; alkali returning is completed in the furnace, so that heat loss is reduced, and the temperature in the furnace is kept; the calcining efficiency is improved; the purposes of saving energy and reducing consumption are achieved.

Description

Accumulation of salt in the surface soil steam roaster in a kind of stove

Technical field

The present invention relates to the soda ash production field, particularly a kind of steam roaster of in stove, realizing the accumulation of salt in the surface soil.

Background technology

Now soda ash production is normally used to be two kinds of calcining furnaces, a kind of is outer accumulation of salt in the surface soil steam roaster, and this kind calcining furnace needs sealed at both ends, because the higher junction of temperature of calcining furnace is difficult to good seal, enter if any air and will cause in the stove gas concentration lwevel to reduce, increase the interior oxygen level of stove and accelerated the oxidation of furnace wall, when occurring the alkali phenomenon can occurring emitting when furnace pressure is undesired, impairment of benefit is very large, and outer accumulation of salt in the surface soil facility investment amount is large, floor space is large, and noise is large, and energy consumption is high; Another kind is self return soda ash steam calcining furnace, and this kind calcining furnace has following shortcoming, and accumulation of salt in the surface soil system is difficult for sealing, accumulation of salt in the surface soil system jams, and the accumulation of salt in the surface soil and the bad control of product caustic soda blending ratio, it is large that the accumulation of salt in the surface soil and heavy alkali mix bad alkali dirt.

Summary of the invention

The present invention is directed to above problem, it is high that the technical problem to be solved in the present invention provides a kind of heat utilization rate, the controlled and difficult obstruction of the accumulation of salt in the surface soil, and can solve sealing problem and the interior accumulation of salt in the surface soil steam roaster of the stove that emits the alkali phenomenon.

For reaching above purpose, be achieved through the following technical solutions:

Accumulation of salt in the surface soil steam roaster in a kind of stove comprises burner and body of heater; Burner is installed on the body of heater front end; The burner upper end is provided with furnace gas export and heavy alkali entrance, and the lower end is provided with the product caustic soda outlet; Body of heater comprises outer furnace tube and base of furnace body; Outer furnace tube outer wall front-end and back-end are respectively arranged with backing ring, and are provided with bull gear between two backing rings; Be provided with on the base of furnace body for the backing ring base that cooperates with the outer furnace tube backing ring with the outer furnace tube bull gear and cooperate for the drive unit that drives outer furnace tube;

Outer furnace tube stove tail end is provided with steam pipeline and gas inlet chamber, and gas inlet chamber is connected with steam pipeline by pipeline; Outer furnace tube inside is provided with interior stove cylinder; Be provided with steam heating tube in outer furnace tube and the interior stove cylinder, and steam heating tube is connected with gas inlet chamber; Interior stove cylinder inwall is provided with screw thread, and namely the steam heating tube in the inner core axially passes screw thread, and the screw thread radial height is higher than the radial height that steam heating tube is positioned at inner core; Be provided with between outer furnace tube and the interior stove cylinder inwall and raise the alkali plate, and raise and be processed with some through holes on the alkali plate; Interior stove cylinder burner end is provided with oblique type poplar plate; The mixed alkali machine of spiral that burner inside is provided with the product caustic soda delivery tube, is used for the worm conveyer of transportation product caustic soda and is used for weighing alkali and product caustic soda is mixed; The mixed alkali machine of spiral is arranged at burner inwall bottom, and stretches in the outer furnace tube; The product caustic soda delivery tube is arranged at the mixed alkali machine of spiral top, and an end stretches in the interior stove cylinder, and the other end exports C with product caustic soda and is connected; Product caustic soda delivery tube middle part is provided with for the accumulation of salt in the surface soil outlet D that product caustic soda is transported to the mixed alkali machine of spiral; Worm conveyer is arranged in the product caustic soda delivery tube; Burner is connected the magnet that sealing place is provided with wear ring, is used for limiting the baffle plate of wear ring axial displacement and is used for wear ring is adsorbed on the stove head seal place with outer furnace tube; Magnet is fixed on wear ring bottom and burner contact jaw; Burner is connected sealing place filler to be paraffin and to add a small amount of soda ash with outer furnace tube; Accumulation of salt in the surface soil outlet D place is provided with valve; Interior stove cylinder burner end outer wall is provided be used to stopping and weighs the outer that alkali falls into interior stove cylinder, and the cross section, outer is trilateral; Interior stove cylinder burner end inwall is provided with for auxiliary product caustic soda and falls into the baffle plate that flows in the worm conveyer;

Adopted the interior accumulation of salt in the surface soil steam roaster of a kind of stove of the present invention of technique scheme to solve the sealing problem that has interior accumulation of salt in the surface soil calcining furnace and outer accumulation of salt in the surface soil calcining furnace stove tail now, the alkali problem of emitting of calcining furnace is solved; Calcining furnace entrance face sealing effectiveness promotes, and the accumulation of salt in the surface soil is finished in stove and reduced calorific loss and be conducive to keep temperature in the stove, improves calcination efficiency, realized energy-conservation, consumption reduction.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technique means of the present invention, and can be implemented according to the content of specification sheets, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.

Description of drawings

Fig. 1 is side-looking structural representation of the present invention.

Fig. 2 is stove breech face master TV structure synoptic diagram of the present invention.

Fig. 3 is central part radial section structural representation of the present invention.

Fig. 4 is interior stove cylinder inner thread structural representation of the present invention.

Fig. 5 is worm conveyer of the present invention and the mixed alkali machine installation site of spiral synoptic diagram.

Fig. 6 is burner of the present invention is connected sealing place with outer furnace tube structural representation.

Among the figure: 1, burner, 1.1, the product caustic soda delivery tube, 1.2 worm conveyers, 1.3, spiral mixes alkali machine, 1.4, wear ring, 1.5, baffle plate, 1.6, magnet, 2, body of heater, 3, outer furnace tube, 3.1, backing ring, 3.2, bull gear, 3.3, raise the alkali plate, 4, base of furnace body, 4.1, the backing ring base, 4.2, drive unit, 5, steam pipeline, 6, gas inlet chamber, 7, steam heating tube, 8, interior stove cylinder, 8.1, screw thread, 8.2, oblique type poplar plate, 8.3, the outer, 8.4, flow to baffle plate, 9, valve, A, furnace gas export, B, heavy alkali entrance, C, the product caustic soda outlet, D, accumulation of salt in the surface soil outlet.

Embodiment

Accumulation of salt in the surface soil steam roaster comprises in a kind of stove as shown in Figure 1: burner 1 and body of heater 2; Burner 1 is installed on body of heater 2 front ends; Burner 1 upper end is provided with for the furnace gas export A that discharges furnace gas and is used for weighing the heavy alkali entrance B that alkali adds, and the lower end is provided with product caustic soda outlet C; Body of heater 2 comprises outer furnace tube 3 and base of furnace body 4; Outer furnace tube 3 outer wall front-end and back-end are respectively arranged with backing ring 3.1, and are provided with bull gear 3.2 between two backing rings 3.1; Be provided with on the base of furnace body 4 for the backing ring base 4.1 that cooperates with outer furnace tube 3 backing rings 3.1 with outer furnace tube 3 bull gears 3.2 and cooperate for the drive unit 4.2 that drives outer furnace tube 3; Outer furnace tube 3 stove tail ends are provided with steam pipeline 5 and gas inlet chamber 6, and gas inlet chamber 6 is connected as shown in Figure 2 with steam pipeline 5 by pipeline;

Outer furnace tube 3 inside are provided with interior stove cylinder 8; Be provided with steam heating tube 7 in outer furnace tube 3 and the interior stove cylinder 8, and steam heating tube 7 is connected (take full advantage of steam heating tube 7 and increase yield rate) with gas inlet chamber 6; Interior stove cylinder 8 inwalls are provided with screw thread 8.1, and namely the steam heating tube 7 in the inner core 8 axially passes screw thread 8.1, and screw thread 8.1 radial heights are higher than the radial height that steam heating tube 7 is positioned at inner core 8; Be provided with between outer furnace tube 1 and interior stove cylinder 8 inwalls and raise alkali plate 3.3, and raise and be processed with some through holes on the alkali plate 3.3 (through hole is mainly used in leak alkali herein, and can take full advantage of steam heating tube 7 by raising 3.3 designs of alkali plate, guarantee that mixed alkali is balanced in first half section and the second half section amount of kicking up) as shown in figures 1 and 3;

Interior stove cylinder 8 burner ends are provided with oblique type poplar plate 8.2; Burner 1 inside is provided with product caustic soda delivery tube 1.1, is used for the worm conveyer 1.2 of transportation product caustic soda and mixes alkali machine 1.3 for the spiral with heavy alkali and product caustic soda mixing; The mixed alkali machine 1.3 of spiral is arranged at burner inwall bottom, and stretches in the outer furnace tube 3; Product caustic soda delivery tube 1.1 is arranged at mixed alkali machine 1.3 tops of spiral as shown in Figure 5, and an end stretches in the interior stove cylinder 8, and the other end exports C with product caustic soda and is connected; Product caustic soda delivery tube 1.1 middle parts are provided with for the accumulation of salt in the surface soil outlet D that product caustic soda is transported to the mixed alkali machine 1.3 of spiral; Worm conveyer 1.2 is arranged in the product caustic soda delivery tube 1.1;

Burner 1 is connected the magnet 1.6 that sealing place is provided with wear ring 1.4, is used for limiting the baffle plate 1.5 of wear ring 1.4 axial displacements and is used for wear ring 1.4 is adsorbed on burner 1 sealing place with outer furnace tube 3; Magnet 1.6 is fixed on wear ring 1.4 bottoms and burner 1 contact jaw as shown in Figure 6; Burner 1 is connected sealing place filler to be paraffin and to add a small amount of soda ash with outer furnace tube 3; Accumulation of salt in the surface soil outlet D place is provided with valve 9; Interior stove cylinder 8 burner end outer walls are provided be used to stopping that heavy alkali falls into the outer 8.3 of interior stove cylinder 8, and 8.3 cross sections, outer are trilateral; Interior stove cylinder 8 burner end inwalls are provided with to fall into for auxiliary product caustic soda and flow to baffle plate 8.4 as shown in Figure 1 in the worm conveyer 1.2;

When having adopted the interior accumulation of salt in the surface soil steam roaster work of a kind of stove of the present invention of technique scheme, at first body of heater 2 is installed on the base of furnace body 4, and by the cooperate location of carrying out body of heater 2 of two backing rings 3.1 with backing ring base 4.1, and making body of heater 2 and ground form inclination angle (for the prior art universal means), bull gear 3.2 cooperates with drive unit 4.2 and is used for driving body of heater 2 rotations as shown in Figure 1; Then burner 1 part is connected sealing with body of heater 2, here burner 1 is connected sealing place wear ring 1.4 with the outer furnace tube 3 of body of heater 2 and limits its axial displacement by baffle plate 1.5, the tight joint that magnet 1.6 adsorptions by its underpart and burner 1 contact jaw realize wear ring 1.4 and burner 1 as shown in Figure 6, and burner 1 is connected sealing place filler to be paraffin and to add a small amount of soda ash with the outer furnace tube 3 of body of heater 2, does like this and can realize good sealing effectiveness; Body of heater stove tail end is the integral type sealed junction has solved stove tail of the prior art like this with regard to structure sealing problem; Interior stove cylinder 8 burner end outer wall cross sections are that leg-of-mutton outer 8.3 can effectively stop the heavy alkali that both direction falls; Interior stove cylinder 8 burner end inwalls are provided with and stop by oblique type poplar plate 8.2 product caustic soda of kicking up, and auxiliary product caustic soda fall into worm conveyer 1.2 flow to baffle plate 8.4, can effectively prevent the loss of product caustic soda;

Then weigh the calcining of alkali, at first the mixed alkali machine 1.3 of spiral will weigh alkali and product caustic soda mixing, the mode that the present invention here adopts two helical runners to overlap realizes the abundant mixing of heavy alkali and product caustic soda, and alkali dirt can not appear in mixing process, enter in the outer furnace tube 3 of body of heater 2 through mixed heavy alkali, the configuration requirement that alkali plate 3.3(raises alkali plate 3.3 of raising that is arranged between outer furnace tube 1 and interior stove cylinder 8 inwalls is no less than 6 for dividing equally inner tank theca circumference and quantity), and raise and be processed with some through holes (through hole is mainly used in leak alkali) on the alkali plate 3.3 herein as shown in figures 1 and 3, raising alkali plate 3.3 can kick up mixed heavy alkali and make mixed heavy alkali contact more abundant with the steam heating tube 7 of outer furnace tube 3 inside in body of heater 2 rotary courses, and in outer furnace tube 3 and interior stove cylinder 8 rotary courses, guarantee in the amount of kick up first half section and second half section alkali balancedly by raising arranging of alkali plate 3.3, make the working efficiency of calcining furnace higher; Because body of heater 2 has the inclination angle will form stocking angle at the stove tail end through the good product caustic soda of calcining like this with ground, be stacked into and to a certain degree will enter into the interior stove cylinder 8 that is arranged at outer furnace tube 3 inside, and be provided with equally steam heating tube 7 in the interior stove cylinder 8, and interior stove cylinder 3 inwalls arrange screw thread 8.1 as shown in Figure 4, make like this carrying to burner 1 end that product caustic soda can be very well in this process, can avoid stopping up, and further utilized the heat of steam heating tube 7, improve yield rate, when being transported to interior stove cylinder 8 front end, product caustic soda contacts as shown in Figure 1 with the oblique type poplar of interior stove cylinder 8 front inner wall plate 8.2, tiltedly type poplar plate 8.2 blocks product caustic soda and auxiliary whereabouts, the product caustic soda whereabouts can enter into product caustic soda delivery tube 1.1 openings that stretch into interior stove cylinder 8 front ends, the worm conveyer 1.2 of product caustic soda delivery tube 1.1 inside just outwards transports product caustic soda like this, a part of product caustic soda enters in the mixed alkali machine 1.3 of spiral by the accumulation of salt in the surface soil outlet D that is communicated with above the mixed alkali machine 1.3 of the setting of delivery tube 1.1 middle parts and spiral and mixes with the heavy alkali of new adding in this process, the rest part product caustic soda is gone out through product caustic soda outlet C, the quantum of output of product caustic soda has also been controlled in the control of carrying out accumulation of salt in the surface soil amount by the valve 9 that is arranged on accumulation of salt in the surface soil outlet D in the transportation of product caustic soda simultaneously, so just saved existing calcining furnace product caustic soda has been transported the process that again joins in the calcining furnace by external force, effectively avoided the loss of heat, realized energy-conservation, the consumption reduction.

If to sum up the present invention is applicable to the minor diameter calcining furnace in actual application, steam heating tube 7 can not increase in the interior stove cylinder 8.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art are not within breaking away from the technical solution of the present invention scope, appeal the equivalent embodiment that the technology contents that discloses is made a little change or is modified to equivalent variations when utilizing, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims

1. the interior accumulation of salt in the surface soil steam roaster of stove is characterized in that: comprise burner (1) and body of heater (2); Described burner (1) is installed on body of heater (2) front end; Described burner (1) upper end is provided with furnace gas export (A) and heavy alkali entrance (B), and the lower end is provided with product caustic soda outlet (C); Described body of heater (2) comprises outer furnace tube (3) and base of furnace body (4); Described outer furnace tube (3) outer wall front-end and back-end are respectively arranged with backing ring (3.1), and are provided with bull gear (3.2) between two backing rings (3.1); Be provided with on the described base of furnace body (4) for the backing ring base (4.1) that cooperates with outer furnace tube (3) backing ring (3.1) with outer furnace tube (3) bull gear (3.2) and cooperate for the drive unit (4.2) that drives outer furnace tube (3); Described outer furnace tube (3) stove tail end is provided with steam pipeline (5) and gas inlet chamber (6), and described gas inlet chamber (6) is connected with steam pipeline (5) by pipeline; Described outer furnace tube (3) inside is provided with interior stove cylinder (8); Be provided with steam heating tube (7) in described outer furnace tube (3) and the interior stove cylinder (8), and described steam heating tube (7) is connected with gas inlet chamber (6); Described interior stove cylinder (8) inwall is provided with screw thread (8.1), be that the interior steam heating tube (7) of described inner core (8) axially passes screw thread (8.1), and described screw thread (8.1) radial height is higher than the radial height that steam heating tube (7) is positioned at inner core (8); Be provided with between described outer furnace tube (1) and interior stove cylinder (8) inwall and raise alkali plate (3.3), and described raising on the alkali plate (3.3) is processed with some through holes; Described interior stove cylinder (8) burner end is provided with oblique type poplar plate (8.2); The mixed alkali machine (1.3) of spiral that described burner (1) inside is provided with product caustic soda delivery tube (1.1), is used for the worm conveyer (1.2) of transportation product caustic soda and is used for weighing alkali and product caustic soda is mixed; The mixed alkali machine (1.3) of described spiral is arranged at burner inwall bottom, and stretches in the outer furnace tube (3); Described product caustic soda delivery tube (1.1) is arranged at the mixed alkali machine (1.3) of spiral top, and an end stretches in the interior stove cylinder (8), and the other end exports (C) with product caustic soda and is connected; Described product caustic soda delivery tube (1.1) middle part is provided with for the accumulation of salt in the surface soil outlet (D) that product caustic soda is transported to the mixed alkali machine (1.3) of spiral; Described worm conveyer (1.2) is arranged in the product caustic soda delivery tube (1.1).

2. a kind of accumulation of salt in the surface soil steam roaster according to claim 1 is characterized in that: described burner (1) is connected sealing place and is provided with wear ring (1.4), is used for the baffle plate (1.5) of restriction wear ring (1.4) axial displacement and is used for wear ring (1.4) is adsorbed on the magnet (1.6) of burner (1) sealing place with outer furnace tube (3); Described magnet (1.6) is fixed on wear ring (1.4) bottom and burner (1) contact jaw.

3. a kind of accumulation of salt in the surface soil steam roaster according to claim 1 is characterized in that: described burner (1) is connected sealing place filler to be paraffin and to add a small amount of soda ash with outer furnace tube (3).

4. accumulation of salt in the surface soil steam roaster in a kind of stove according to claim 1, it is characterized in that: described accumulation of salt in the surface soil outlet (D) locates to be provided with valve (9).

5. accumulation of salt in the surface soil steam roaster in a kind of stove according to claim 1 is characterized in that: described interior stove cylinder (8) burner end outer wall is provided be used to stopping that heavy alkali falls into the outer (8.3) of interior stove cylinder (8), and cross section, described outer (8.3) is trilateral.

6. accumulation of salt in the surface soil steam roaster in a kind of stove according to claim 1 is characterized in that: described interior stove cylinder (8) burner end inwall is provided with to fall into for auxiliary product caustic soda and flows to baffle plate (8.4) in the worm conveyer (1.2).