CN201007424Y

CN201007424Y - Negative pressure type device for recycling chemical industry production tail gas

Info

Publication number: CN201007424Y
Application number: CNU2007200370216U
Authority: CN
Inventors: 高行保
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-20
Filing date: 2007-04-20
Publication date: 2008-01-16
Anticipated expiration: 2017-04-20

Abstract

The utility model relates to a negative pressure chemical productive tail gas recovery apparatus, which adopts the idea of increasing the tail gas negative pressure collecting in the form of emptying water, and is the improvement of the prior wet type or dry type recovery apparatus, the primary improvement is that the external wall of the tank above the surrounding flat surface of an inner container of the wet type recovery apparatus is equipped with a drainpipe, the upper top of the gas tank of the dry type recovery apparatus is equipped with a intake pipe, and the lower bottom is equipped with a drainpipe. The utility model reserves the integrated structure of the wet type or dry type recovery apparatus, and only equips a pipe and a valve for controlling draining at the critical portion, which facilitates the apparatus collecting tail gas in the negative pressure condition, thus the apparatus not only enhances the collection efficiency of tail gas, but also improves the working efficiency and life span of the compressor. The apparatus has the advantages of low investment and easy application, thereby being in favor of spread and application in the fellow trade, and having excellent environmental benefit and economic benefit.

Description

Negative pressure type reclaims the Chemical Manufacture tail gas unit

Technical field

The utility model relates to Chemical Manufacture tail gas recycle technology, and particularly a kind of negative pressure type reclaims the Chemical Manufacture tail gas unit.

Background technique

In the Chemical Manufacture recovery of tail gas almost be all Chemical Manufacture factories that produce exhaust emissionss the final operation that must finish.This is because according to environmental requirement, these contain harmful material gas, can not directly be discharged in the atmosphere without recycling; Moreover also contain a certain amount of useful chemical substance in some tail gas, not reclaimed and bleed off in vain is a kind of waste.For example, produce polypropylene and just contain a certain amount of third rare material in the tail gas that produces, can produce good benefits in environment and economic benefit after the recycling.At present, common device for recovering tail gas mainly contains wet type recovering device and dry type recovering device, these two kinds of recovering devices are distinguished to some extent in structure, but its common ground all be with exhaust collection to gas holder, lead to compressor again and do to solidify handle obtain utility.And from the operation conditions of said apparatus, they exist some following defectives inevitably: because tail gas air pressure is low excessively, it is lower that the utilization compressor carries out compression efficiency, power consumption excessive (per hour need consume Baidu), the machine works overlong time, the working life of compressor has also been shortened in bigger wearing and tearing.

Summary of the invention

The utility model is at above-mentioned deficiency, propose a kind of negative pressure type and reclaimed the Chemical Manufacture tail gas unit, purpose is to make tail gas under negative pressure state, fully collected, and compresses increasing under the pressure state, has improved exhaust collection rate and compressor operating efficient.

Technical solution of the present utility model

The utility model improves the same thinking of tail gas negative pressure collection rate in the mode of emptied of water, and existing wet type, dry type recovering device are improved:

(1) existing wet type recovering device is improved: promptly outside comprising, offer waste pipe on the outer cabinet wall that is higher than the plane of week at the bottom of the inner bag of the wet type recovering device of cabinet, inner bag;

(2) existing dry type recovering device is improved: promptly back down on its clinostatism gas holder and be provided with intake pipe, going to the bottom offers waste pipe.

The beneficial effects of the utility model

(1) the utility model has made full use of wet type or dry type device for recovering tail gas, the general structure that has kept them, the pipe and the valve of control discharge water only are set at key position, can reach in the negative pressure state, improve the goal of the invention of exhaust collection rate, invest for a short time, simple, help applying in the same industry.

(2) the utility model helps improving the working efficiency of compressor, has shortened the operating time of machine simultaneously, reduces wear, and has prolonged the operating life of compressor.

(3) enforcement of the present utility model has reduced the air displacement that the tail gas sky is put, and has good benefits in environment; And improved the yield of utility in the tail gas, can obtain certain economic benefits simultaneously.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model as tail gas wet type recovering device;

Accompanying drawing 2 is the structural representation of the utility model as tail gas dry type recovering device.

Embodiment

Embodiment one

As shown in Figure 1, the utility model except that comprise cabinet 1, inner bag 2 and come from the flash distillation still tail gas suction tude (abbreviation suction tude) 3, lead to the tail gas steam outlet pipe (abbreviation steam outlet pipe) 4 of compressor, outside relief tube 5, intake pipe 6, drain pipe 7, the blow-down pipe 8, also comprise waste pipe 9, this waste pipe 9 is arranged on the wall of the outer cabinet 1 on 2 end of the inner bag circumferential plane.

Now, sketch the working procedure of present embodiment in conjunction with Fig. 1:

The utility model is under the state of closing drain pipe 7, waste pipe 9, suction tude 3, open blow-down pipe 8 and by intake pipe 6 to have the end half-headed outside water filling in the cabinet 1, because inner bag had the top and is shelved on the filling body of bearing post 21 for the no end, water is then in the bottom inflow inner bag from the gap of outer cabinet 1 and inner bag 2, by inner bag 2.After water is full, close intake pipe 6 and blow-down pipe 8, to open waste pipe 9 and discharge water, the pressure in inner bag space descends gradually, and reaches negative pressure state.Open suction tude 3, the intact useful tail gas (rare as third) of unreacted enters inner bag in the flash distillation still, and when water arrival certain liquid can not be again when waste pipe is discharged, then close suction tude, tail gas enters compressor through steam outlet pipe 4 and handles, so goes round and begins again and finishes the recovery operation of tail gas.Because be provided with the track (not shown) between inner bladder outer wall and the outer cabinet inwall, inner bag can fluctuate with respect to outer cabinet; Gas outlet 5 is to press too high release safety installations in the inner bag, adds switch valve on its pipe top, makes closed condition during draining, can prevent that ambient air from entering.

Embodiment two

As shown in Figure 2, the utility model is as the dry type device for recovering tail gas, it remove comprise clinostatism gas tank 11, and from the suction tude 12 of flash distillation still, lead to the steam outlet pipe 13 of compressor, outside the blow-down pipe 14, also comprise the intake pipe 15 that is arranged on gas tank 11 tops and be arranged on the waste pipe 16 of gas tank 11 bottoms.

Now, sketch the working procedure of present embodiment in conjunction with Fig. 2:

The utility model when work, close suction tude 12, waste pipe 16 earlier, open blow-down pipe 14, going into to be filled to jar by intake pipe 15 expires, and closes blow-down pipe 14, opening waste pipe 16 discharges water, the jar internal pressure reduces, and opens suction tude 12, and tail gas enters in the jar, after the water emptying, close waste pipe 16, tail gas makes tail gas enter compressor by steam outlet pipe 13 and handles, and is same, so goes round and begins again and finish the recovery operation of tail gas.

To sum up, two embodiments are negative pressure type and reclaim the Chemical Manufacture tail gas unit more than.

Claims

1. a negative pressure type reclaims the Chemical Manufacture tail gas unit, comprise outer cabinet (1), inner bag (2), suction tude (3), steam outlet pipe (4), relief tube (5), intake pipe (6), drain pipe (7), blow-down pipe (8), it is characterized in that: it also comprises waste pipe (9), and this waste pipe is arranged on the wall of the outer cabinet (1) on inner bag (2) end circumferential plane.

2. negative pressure type according to claim 1 reclaims the Chemical Manufacture tail gas unit, and it is characterized in that: the top of described gas outlet (5) adds switch valve.

3. a negative pressure type reclaims the Chemical Manufacture tail gas unit, comprise clinostatism gas tank (11), suction tude (12), steam outlet pipe (13), blow-down pipe (14) is characterized in that: it also comprises the intake pipe (15) that is arranged on gas tank (11) top and is arranged on the waste pipe (16) of gas tank (11) bottom.