CN202558653U

CN202558653U - Slag discharging device of ammonia still

Info

Publication number: CN202558653U
Application number: CN2011203920322U
Authority: CN
Inventors: 郭汝全; 闫忠生
Original assignee: Shanxi Antai Group Co Ltd
Current assignee: Shanxi Antai Group Co Ltd
Priority date: 2011-10-16
Filing date: 2011-10-16
Publication date: 2012-11-28
Anticipated expiration: 2021-10-16

Abstract

The utility model discloses a slag discharging device of an ammonia still. The slag discharging device comprises an ammonia still body, a slag discharging pipe, a steam pipe, a steam jacket pipe, a condensate water recycling pipe, a slag discharging valve, a steam blowing valve, a jacket heating valve, a heat insulation plug valve and a drain valve. The slag discharging pipe is communicated with the bottom of the ammonia still body, the slag discharging valve is arranged on the slag discharging pipe, the steam blowing valve is communicated onto the slag discharging pipe on the lower portion of the slag discharging valve, one end of the steam blowing valve is communicated with the steam pipe, the tail end of the slag discharging pipe is connected with a slag tank, the steam jacket pipe is arranged on the outer layer of the slag discharging pipe, the heat insulation plug valve is arranged at the head end of the steam jacket pipe, the drain valve is communicated with the tail end of the steam jacket pipe, the steam pipe is communicated with the steam jacket pipe through the jacket heating valve and the heat insulation plug valve, and the other end of the drain valve is communicated with the condensate water recycling pipe. Oil content of waste water discharged by the slag discharging device is below 20mg/L and is smaller than waste water oil content index which is 50mg/L, so that the slag discharging device reduces working load of a gas floating oil removing machine in a biochemical system. The heat insulation plug valve and a heat insulation jacket are connected in series to use steam, so that secondary utilization of steam waste heat can be achieved.

Description

The ammonia still slag discharging device

Technical field

The utility model relates to the high temperature slag discharging device of chemical plant, particularly a kind of ammonia still slag discharging device.

Background technology

Inhomogeneous and the latch up phenomenon of bed drain purge often appears in the ammonia still scum pipe of prior art.When scum pipe stops up, can only utilize to purify coal gas through burning the roasting deslagging that carries out.There is following deficiency in the deslagging of this mode: (1) deslagging complex procedures, and operation easier is big, and safety performance is low, and the input manpower is many, energy consumption is high, and production cost is high; When (2) scum pipe stops up with baked wheaten cake, use coal gas or gas welding that equipment is heated, influence service life of equipment, cause the ME rate to increase; (3) tower bear building-up slag row is unclean, in case discharge, slag-drip opening pitch slag splashes, and smell is big, serious law environment; (4) sometimes because of row does not slag tap, long-time barbecue, the dregs of fat in the pipe become dry gradually, need to stop production Residue extraction pipeline is cleared up; (5) distilled ammonia wastewater band oil is many, influences next procedure and normally moves.Therefore, demand developing that deslagging is unimpeded urgently, the ammonia still slag discharging device of environmental protection, safety.

Summary of the invention

For overcoming above-mentioned many deficiencies that prior art exists, the utility model provides a kind of ammonia still slag discharging device, and this device deslagging is unimpeded, environmental protection, safety.

The ammonia still slag discharging device of the utility model comprises ammonia still tower body, scum pipe, vapour pipe, steam-jacket pipe, water of condensation TFL, residual cake valve, steaming out valve, chuck heater valve, insulation stopcock and drain valve.Bottom at the ammonia still tower body is communicated with scum pipe, and scum pipe is provided with residual cake valve, on the scum pipe of residual cake valve bottom, is communicated with the steaming out valve; One end of steaming out valve is communicated with vapour pipe, and the end of scum pipe leads to slag bath, is provided with steam-jacket pipe at the skin of scum pipe; The head end of steam-jacket pipe is provided with the insulation stopcock; The terminal drain valve that is communicated with, vapour pipe is communicated with steam-jacket pipe through chuck heater valve and insulation stopcock, and the drain valve the other end is communicated with the water of condensation TFL.

The deslagging principle of the utility model: during deslagging, at first open chuck heater valve and insulation stopcock, make the steam in the vapour pipe get into steam-jacket pipe, regulate the insulation stopcock temperature of scum pipe is kept greater than 130 ℃; Next opens residual cake valve, and the dregs of fat are at high temperature discharged smoothly; At last, when deslagging finishes, open the steaming out valve, the dregs of fat in the scum pipe are swept totally, the water of condensation in the steam-jacket pipe gets into the water of condensation TFL through drain valve.

The beneficial effect of the utility model

The utility model is through being provided with steam-jacket pipe outside scum pipe; Steam in the vapour pipe is introduced steam-jacket pipe; The temperature of scum pipe is remained on more than 130 ℃, melt into rare shape in the scum pipe of the dregs of fat at the bottom of the tower under the steam jacket protection and flow in the slag bath, make deslagging not have dregs of fat latch up phenomenon; Remain unimpeded, the oil smoke that has produced when having eliminated deslagging simultaneously.The waste water oleaginousness of discharging through this device less than the standard of waste water band oil mass index 50mg/L, thereby has reduced the working load of biochemical system oil removal by air bubbling machine below 20mg/L.This device realizes need not special messenger's operation, and deslagging is evenly reliable, and the dregs of fat do not splash when discharging, and the smell that the dregs of fat produce is little, the deslagging cleaned in situ, and safety performance is high.This device adopts the insulation stopcock, and flexible operation is safe and reliable, utilizes insulation stopcock control bed drain purge.The insulation stopcock is connected with insulation jacket and is used steam, makes steam waste heat reach second stage employ.

Description of drawings

Fig. 1 is the structural representation of the utility model ammonia still slag discharging device.

Among the figure: 1,The ammonia still tower body, 2, scum pipe, 3, vapour pipe, 4, steam-jacket pipe, 5, the water of condensation TFL, 6, residual cake valve, 7, the steaming out valve, 8, the chuck heater valve, 9, the insulation stopcock, 10, drain valve.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

A kind of ammonia still slag discharging device, as shown in Figure 1, comprise ammonia still tower body 1, scum pipe 2, vapour pipe 3, steam-jacket pipe 4, water of condensation TFL 5, residual cake valve 6, steaming out valve 7, chuck heater valve 8, insulation stopcock 9 and drain valve 10.Bottom at ammonia still tower body 1 is communicated with scum pipe 2; Scum pipe 2 is provided with residual cake valve 6, and the scum pipe 2 in residual cake valve 6 bottoms is communicated with steaming out valve 7, and an end of steaming out valve 7 is communicated with vapour pipe 3; The end of scum pipe 2 leads to slag bath; Skin at scum pipe 2 is provided with steam-jacket pipe 4, and the head end of steam-jacket pipe 4 is provided with insulation stopcock 9, the terminal drain valve 10 that is communicated with; Vapour pipe 3 is by chuck heater valve 8 connection of connect with insulation stopcock 9 and steam-jacket pipe 4, drain valve 10 the other ends connection water of condensation TFL 5.

During work, open chuck heater valve 8 and insulation stopcock 9, make the steam of vapour pipe 3 get into steam-jacket pipe 4; Open residual cake valve 6, regulate insulation stopcock 9 temperature of the dregs of fat in the scum pipe 3 is remained on more than 130 ℃, make the dregs of fat become scattered paste shape to flow to the deslagging pond smoothly; When deslagging finishes, open steaming out valve 7, the dregs of fat in the scum pipe 2 are purged clean; In entire work process, the water of condensation in the steam-jacket pipe 4 gets into water of condensation TFL 5 through drain valve 10.

Claims

1. ammonia still slag discharging device; Comprise ammonia still tower body (1), scum pipe (2), vapour pipe (3), steam-jacket pipe (4), water of condensation TFL (5), residual cake valve (6), steaming out valve (7), chuck heater valve (8), insulation stopcock (9) and drain valve (10); It is characterized in that be communicated with scum pipe (2) in the bottom of ammonia still tower body (1), scum pipe (2) is provided with residual cake valve (6); Go up connection steaming out valve (7) at the scum pipe (2) of residual cake valve (6) bottom; One end of steaming out valve (7) is communicated with vapour pipe (3), and the end of scum pipe (2) leads to slag bath, is provided with steam-jacket pipe (4) at the skin of scum pipe (2); The head end of steam-jacket pipe (4) is provided with insulation stopcock (9); The terminal drain valve (10) that is communicated with, vapour pipe (3) is communicated with steam-jacket pipe (4) through chuck heater valve (8) and insulation stopcock (9), and drain valve (10) the other end is communicated with water of condensation TFL (5).