CN204417375U

CN204417375U - A kind of production unit preparing formaldehyde

Info

Publication number: CN204417375U
Application number: CN201420820990.9U
Authority: CN
Inventors: 吴立兴
Original assignee: Wuxi Electric Applicance Co Ltd Of Bdcom
Current assignee: Wuxi Electric Applicance Co Ltd Of Bdcom
Priority date: 2014-12-23
Filing date: 2014-12-23
Publication date: 2015-06-24
Anticipated expiration: 2024-12-23

Abstract

The utility model relates to a kind of production unit preparing formaldehyde, comprise treater, heating unit, vapour passage, roots blower, reactor, an absorption tower, a tail gas pot, a recycle pump, water cooler, No. two absorption towers, No. two tail gas pots, No. two recycle pumps, methyl aldehyde storing device, No. two exhaust gas channels and an exhaust gas channel, described mixed gas is by entering reactor after treater, vapour passage is provided with between described reactor and treater, described vapour passage inside is provided with roots blower, the formaldehyde gas of described generation is admitted in an absorption tower on the right side of reactor, carry out the absorption of first technique, described cooled formaldehyde is fed in No. two absorption towers, carry out the absorption of second technique, the twice absorption technique of this equipment, make formaldehyde absorption more thorough, purity is higher.Therefore the utility model avoids energy dissipation and the low problem of productive rate.

Description

A kind of production unit preparing formaldehyde

Technical field

The utility model belongs to production unit technical field, particularly relates to a kind of production unit preparing formaldehyde.

Background technology

In recent years, many little synthesis ammonia plants are in the process of " developing multiple Chemicals based on synthetic ammonia ", have employed ammonia and methanol integrated production production technique, methanol output is increased substantially, meet the nearly 45 % methyl alcohol of China for the needs of Formaldehyde Production, formaldehyde and subsequent product thereof are further developed.Formaldehyde Production develops into by extensive style the production that becomes more meticulous, and by the road simply to career development, in technique and operation, research is exactly improve turnover ratio.Present many factories manage in Formaldehyde Production, formaldehyde process optimization, and catalyst is selected and installed and all does well, but material consumption level is still not low.

And the production process route of domestic formaldehyde, though all using Formaldehyde Production as systems engineering, make every effort to links accomplish meticulous, reach high conversion, but still there is energy dissipation and the low problem of productive rate.

technology contents

The utility model provides a kind of production unit preparing formaldehyde, to solve the low problem of energy dissipation and productive rate in above-mentioned background technology.

The technical problem that the utility model solves realizes by the following technical solutions: the utility model provides a kind of production unit preparing formaldehyde, it is characterized in that: comprise treater, heating unit, vapour passage, roots blower, reactor, an absorption tower, a tail gas pot, a recycle pump, water cooler, No. two absorption towers, No. two tail gas pots, No. two recycle pumps, methyl aldehyde storing device, No. two exhaust gas channels and an exhaust gas channel, described mixed gas is by directly entering reactor after treater, vapour passage is provided with between described reactor and treater, described vapour passage inside is provided with roots blower, described vapour passage is by inner to treater for the delivery of steam of discharging in reactor, the formaldehyde gas of described generation is admitted in an absorption tower on the right side of reactor, carry out the absorption of first technique, described cooled formaldehyde is fed in No. two absorption towers, carry out the absorption of second technique.

Being absorbed in an absorption tower of described first technique is carried out, a described formaldehyde gas part is absorbed by tower, be sent in the water cooler on right side by a recycle pump, describedly then not to be fed in a tail gas pot above an absorption tower by the systemic formaldehyde gas of tower and tail gas, to be transported in treater by an exhaust gas channel.

Being absorbed in No. two absorption towers of described second technique is carried out, a described formaldehyde part is absorbed by tower, be sent in the methyl aldehyde storing device on right side by No. two recycle pumps, the described No. two tail gas pots be not then fed to above No. two absorption towers by the systemic formaldehyde gas of tower and tail gas are inner, are transported in treater by No. two exhaust gas channels.

This production unit described is provided with twice absorption technique, makes formaldehyde carry out double absorption.

Described treater inside is provided with heating unit.

The beneficial effects of the utility model are: 1, the top of tower on the utility model absorption tower is provided with tail gas pot, unabsorbed tail gas is sent in treater by exhaust gas channel and is burnt, reduce the waste of formaldehyde, and liberated heat produces steam indirectly, steam can use outward by plenum system, power consumption, energy consumption are reduced, effectively reduces energy consumption.

2, be provided with vapour passage between treater of the present utility model and reactor, make the steam produced in reactor be delivered directly in treater, do not need treater again by outside delivering vapor, reach energy-conservation effect.

3, the utility model in process of production, is provided with twice absorption technique, and the formaldehyde of production carries out double absorption, and product is absorbed more thorough, purity is higher.

4, the temperature control of the utility model oxygen is low, and negative reaction is few, low to system interference factors dictate, reduces operation easier.

5, the utility model is easy to production control, and raw material consumption is few, and production cost is low, decreases the discharge of waste gas, be a kind of energy-conservation, reduce discharging, the suitability for industrialized production equipment of environmental protection.

Accompanying drawing explanation

Fig. 1 is structure iron of the present utility model.

Embodiment

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

In figure: 1-treater, 2-heating unit, 3-vapour passage, 4-roots blower, 5-reactor, 6-absorption tower, 7-tail gas pot, 8-recycle pump, 9-water cooler, 10-No. bis-absorption towers, 11-No. bis-tail gas pots, 12-No. bis-recycle pumps, 13-methyl aldehyde storing device, 14-No. bis-exhaust gas channels, 15-exhaust gas channel.

Embodiment:

The present embodiment comprises treater 1, heating unit 2, vapour passage 3, roots blower 4, reactor No. 6, one, 5, absorption tower tail gas pot 7, recycle pump 8, water cooler No. 10, two, 9, No. two absorption towers tail gas pot 11, No. two recycle pumps 12, methyl aldehyde storing device 13, No. two exhaust gas channels 14 and an exhaust gas channel 15.

Mixed gas is by directly entering reactor 5 after treater 1, vapour passage 3 is provided with between reactor 5 and treater 1, by inner to treater 1 for the delivery of steam of discharging in reactor 5, vapour passage 3 inside is provided with roots blower 4, make steam by reactor 5 to unidirectional conveying in treater 1, the formaldehyde gas of generation is admitted in an absorption tower 6 on the right side of reactor 5, carries out the absorption of first technique, cooled formaldehyde is fed in No. two absorption towers 10, carries out the absorption of second technique.

Being absorbed in an absorption tower 6 of first technique is carried out, a formaldehyde gas part is absorbed by tower, be sent in the water cooler 9 on right side by a recycle pump 8, then be not fed to tail gas pot 7 inside above an absorption tower 6 by the systemic formaldehyde gas of tower and tail gas, be transported in treater 1 by an exhaust gas channel 15, effectively avoid the waste of formaldehyde and the discharge of tail gas.

Being absorbed in No. two absorption towers 10 of second technique is carried out, a formaldehyde part is absorbed by tower, be sent in the methyl aldehyde storing device 13 on right side by No. two recycle pumps 12, then be not fed to No. two tail gas pots 11 inside above No. two absorption towers 10 by the systemic formaldehyde gas of tower and tail gas, be transported in treater 1 by No. two exhaust gas channels 14, effectively avoid the waste of formaldehyde and the discharge of tail gas.

This production unit is provided with twice absorption technique, and the formaldehyde of production carries out double absorption, and product is absorbed more thorough, purity is higher.

Treater 1 inside is provided with heating unit 2, can keep the proper temperature of treater inside.

Utilize technical scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technical scheme, and reach above-mentioned technique effect, is all fall into protection domain of the present utility model.

Claims

1. prepare the production unit of formaldehyde for one kind, it is characterized in that: comprise treater, heating unit, vapour passage, roots blower, reactor, an absorption tower, a tail gas pot, a recycle pump, water cooler, No. two absorption towers, No. two tail gas pots, No. two recycle pumps, methyl aldehyde storing device, No. two exhaust gas channels and an exhaust gas channel, described mixed gas is by directly entering reactor after treater, vapour passage is provided with between described reactor and treater, described vapour passage inside is provided with roots blower, described vapour passage is by inner to treater for the delivery of steam of discharging in reactor, the formaldehyde gas of described generation is admitted in an absorption tower on the right side of reactor, carry out the absorption of first technique, described cooled formaldehyde is fed in No. two absorption towers, carry out the absorption of second technique.

2. a kind of production unit preparing formaldehyde according to claim 1, it is characterized in that: being absorbed in an absorption tower of described first technique is carried out, a described formaldehyde gas part is absorbed by tower, be sent in the water cooler on right side by a recycle pump, describedly then not to be fed in a tail gas pot above an absorption tower by the systemic formaldehyde gas of tower and tail gas, to be transported in treater by an exhaust gas channel.

3. a kind of production unit preparing formaldehyde according to claim 1, it is characterized in that: being absorbed in No. two absorption towers of described second technique is carried out, a described formaldehyde part is absorbed by tower, be sent in the methyl aldehyde storing device on right side by No. two recycle pumps, the described No. two tail gas pots be not then fed to above No. two absorption towers by the systemic formaldehyde gas of tower and tail gas are inner, are transported in treater by No. two exhaust gas channels.

4. a kind of production unit preparing formaldehyde according to claim 1, is characterized in that: this production unit described is provided with twice absorption technique, makes formaldehyde carry out double absorption.

5. a kind of production unit preparing formaldehyde according to claim 1, is characterized in that: described treater inside is provided with heating unit.