CN2806425Y - Non-condensed gas discharging device for autoclave - Google Patents

Abstract

The utility model discloses a non-condensed gas discharging device for an autoclave, which comprises autoclaves and flash evaporators which are orderly arranged according to the orders of the high pressure solution of the production of alumina production. Non-condensable gas pipes of the upper level autoclave and material passing pipes of the lower level autoclave are connected in the orderly arranged autoclaves; the non-condensable gas pipes on the final level autoclave are connected with the material passing pipes positioned between the autoclaves and the flash evaporators. The utility model not only can ensure the autoclaves to be operated when the autoclaves are fully filled, improve heat exchange efficiency and extend the reaction time of solution, but also avoid the phenomenon that the non-condensable gas in the autoclaves is suddenly dashed out to threat operators with plasm. Simultaneously, the service life of valves on pipelines is extended. Therefore, the production cost and the maintenance cost are reduced, and safe and stable production is ensured.

Description

The non-condensable gas of pressure boiler discharger

Technical field:

The utility model relates in a kind of alumina producing, the non-condensable gases discharge method and the device of the autoclave that stripping slurry uses.

Background technology:

In existing aluminum oxide ore dissolving-out technology, the discharging modes of non-condensable gases are artificial intermittent discharges in the stripping autoclave: be provided with the non-condensable gases pipe on autoclave, be connected to the discharge funnel below the non-condensable gases pipe, regularly drain tap is opened by the workman, make the non-condensable gases in the autoclave enter the discharge funnel, because the pressure in the autoclave is up to 52 kilograms, slurry temperature wherein is at 260 ℃, the expellant gas band partly, and slip pours in the discharge funnel at a terrific speed, pipe vibration is big during each exhaust, the valve serious wear, slip very easily splashes and leaks, and is unfavorable for the safety and the steady running of producing.

Summary of the invention:

The purpose of this utility model is: provide that continuous blow-down is carried out in a kind of discharging that can make non-condensable gases in the autoclave and can not occur non-condensable gases band in the autoclave that slip is gone out suddenly, also can make autoclave keep the canful operation simultaneously, improve the heat exchange effect and prolong the stripping reaction times and can reduce production cost and recondition expense, and can guarantee production safety and stable non-condensable gas of pressure boiler discharger, to overcome the deficiencies in the prior art.

The utility model is achieved in that it comprises autoclave (1) and flasher (4), autoclave (1) and flasher (4) are arranged in order by the order of alumina producing high pressure stripping workshop section, in the autoclave that is arranged in order (1), non-condensable gases pipe (2) on the upper level autoclave (1) is connected with charge tube (3) to next stage autoclave (1), and the non-condensable gases pipe (2) on the last step autoclave (1) is connected with the charge tube (6) of autoclave (1) to flasher (4); On the flasher that is arranged in order (4), be provided with vapor pipe (5).

Owing to adopted such scheme, the utility model is discharged non-condensable gases by the vapor pipe of charge tube and flasher, realized the continuous blow-down of non-condensable gases, makes the autoclave internal pressure stabilises.And because non-condensable gases has adopted continuous blow-down, not only can guarantee the canful operation of autoclave, improve the heat exchange effect and prolong the stripping reaction times, and avoided the non-condensable gases band in the autoclave slip and gone out the situation that the safety to operator threatens suddenly, prolonged the work-ing life of valve on the pipeline simultaneously, so both reduced production cost and recondition expense, the safety that has also guaranteed to produce is with stable.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model.

Embodiment:

Embodiment of the present utility model: can be existing technical the transformation, from first step autoclave (1), non-condensable gases pipe (2) on the upper level autoclave (1) is connected with charge tube (3) on the next stage autoclave (1), non-condensable gases pipe (2) on the last step autoclave (1) is connected with the charge tube (6) of autoclave (1) to flasher (4), and on each flasher (4) that is arranged in order, a vapor pipe (5) is installed all, can make like this through the non-condensable gases after the step-down and in atmosphere, discharge by the vapor pipe (5) on the flasher (4).

Claims (2)

1. non-condensable gas of pressure boiler discharger, it comprises autoclave (1) and flasher (4), autoclave (1) and flasher (4) are arranged in order by the order of alumina producing high pressure stripping workshop section, it is characterized in that: in the autoclave that is arranged in order (1), non-condensable gases pipe (2) on the upper level autoclave (1) is connected with charge tube (3) to next stage autoclave (1), and the non-condensable gases pipe (2) on the last step autoclave (1) is connected with the charge tube (6) of autoclave (1) to flasher (4).

2. non-condensable gas of pressure boiler discharger according to claim 1 is characterized in that: be provided with vapor pipe (5) on the flasher that is arranged in order (4).

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