CN206069370U - A kind of equipment for processing dinitro benzene spent acid concentrated in vacuo - Google Patents
A kind of equipment for processing dinitro benzene spent acid concentrated in vacuo Download PDFInfo
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- CN206069370U CN206069370U CN201621016109.5U CN201621016109U CN206069370U CN 206069370 U CN206069370 U CN 206069370U CN 201621016109 U CN201621016109 U CN 201621016109U CN 206069370 U CN206069370 U CN 206069370U
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Abstract
The utility model discloses a kind of equipment for processing dinitro benzene spent acid concentrated in vacuo, including for preheating the spent acid preheating device of dinitro benzene spent acid, spent acid preheating device is connected with denitrating tower, the gaseous phase outlet end of denitrating tower is connected with nitric acid chiller, and the liquid-phase outlet end of denitrating tower is connected with sulphuric acid concentration device；Described nitric acid chiller is connected with the first phase-separating device；The gaseous phase outlet end of sulphuric acid concentration device is connected with one-level extraction equipment, one-level extraction equipment is connected with two grades of extraction equipments, two grades of extraction equipments are connected with flue gas condensing chiller, flue gas condensing chiller is connected with the second phase-separating device, and flue gas condensing chiller is connected with vacuum pump set simultaneously；The liquid-phase outlet end of described sulphuric acid concentration device is connected with sulphuric acid chiller.The equipment for processing dinitro benzene spent acid concentrated in vacuo of the present utility model, with concentrated in vacuo as core, paradinitrobenzene spent acid carries out handling flexibly, realizes that " three wastes " reach discharge standard.
Description
Technical field
This utility model belongs to spent acid processing technology field, and in particular to a kind of process dinitro benzene spent acid concentrated in vacuo
Equipment.
Background technology
At present, DNT factories dinitro benzene and a nitre factory nitro o-Dimethylbenzene production line spent acid are carried out with drum-type condensing mode
Process, it is larger that the production line discharge flue gas in processing procedure, environmental protection pressure affects heavier, environmental protection at present can not have been met and managed
Require, drum-type Concentration Production Line will be phased out.
Utility model content
The purpose of this utility model is：For problem present in existing drum-type enrichment facility, there is provided a kind of vacuum
The equipment of concentration dinitro benzene spent acid, with concentrated in vacuo as core, paradinitrobenzene spent acid carries out handling flexibly, realizes
" three wastes " reach discharge standard.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of equipment for processing dinitro benzene spent acid concentrated in vacuo, preheats including the spent acid for preheating dinitro benzene spent acid
Device, spent acid preheating device are connected with denitrating tower, and the gaseous phase outlet end of denitrating tower is connected with nitric acid chiller, the liquid of denitrating tower
The phase port of export is connected with sulphuric acid concentration device；
Described nitric acid chiller is connected with the first phase-separating device；
The gaseous phase outlet end of described sulphuric acid concentration device is connected with one-level extraction equipment, and one-level extraction equipment is connected with two
Level extraction equipment, two grades of extraction equipments are connected with flue gas condensing chiller, and flue gas condensing chiller is connected with the second phase point
From device, flue gas condensing chiller is connected with vacuum pump set simultaneously；The liquid-phase outlet end connection of described sulphuric acid concentration device
There is sulphuric acid chiller.
Preferably, described sulphuric acid concentration device concentrates mechanism using three-level.
Preferably, spraying mechanism is provided with described nitric acid chiller, spraying mechanism is connected with mononitro-benzene supply
Device.
As a result of above-mentioned technical proposal, the beneficial effects of the utility model are：
The equipment for processing dinitro benzene spent acid concentrated in vacuo of the present utility model, with technology concentrated in vacuo as core, by two
Nitrobenzol spent acid operates sulphuric acid and nitric acid in waste acid recovery by units such as denitration, concentration, sewage stripping, smoke of gunpowder absorptions,
According to the difference of acidic nature, the handling flexibly concentrated in vacuo of paradinitrobenzene spent acid after accordingly being transformed to system, is realized；
Processing equipment concentrated in vacuo of the present utility model, simple structure are easy to operate, and are capable of the discharge of effective control pollutant, with
Meet environmental requirement.
Description of the drawings
Fig. 1 is the structured flowchart of the equipment for processing dinitro benzene spent acid concentrated in vacuo of the present utility model.
Reference：1- spent acid preheating devices, 2- denitrating towers, 3- nitric acid chillers, 4- mononitro-benzene feedways, 5-
First phase-separating device, 6- sulphuric acid concentration devices, 7- one-level extraction equipments, bis- grades of extraction equipments of 8-, 9- flue gas condensings cooling dress
Put, 10- vacuum pump sets, the second phase-separating devices of 11-, 12- sulphuric acid chillers.
Specific embodiment
With reference to Fig. 1, a kind of equipment for processing dinitro benzene spent acid concentrated in vacuo of the present utility model, including for preheating two
The spent acid preheating device 1 of Nitrobenzol spent acid, spent acid preheating device 1 are connected with denitrating tower 2, the gaseous phase outlet end connection of denitrating tower 2
The liquid-phase outlet end for having nitric acid chiller 3, denitrating tower 2 is connected with sulphuric acid concentration device 6.Described nitric acid chiller 3 connects
It is connected to the first phase-separating device 5；The gaseous phase outlet end of described sulphuric acid concentration device 6 is connected with one-level extraction equipment 7, one-level extraction
Take device 7 and be connected with two grades of extraction equipments 8, two grades of extraction equipments 8 are connected with flue gas condensing chiller 9, flue gas condensing cooling
Device 9 is connected with the second phase-separating device 11, and flue gas condensing chiller 9 is connected with vacuum pump set 10 simultaneously；Described sulphuric acid
The liquid-phase outlet end of enrichment facility 6 is connected with sulphuric acid chiller 12.Wherein, spraying mechanism is provided with nitric acid chiller 3,
Spraying mechanism is connected with mononitro-benzene feedway 4.
It is of the present utility model preferred embodiment, sulphuric acid concentration device 6 using three-level concentrate mechanism so that sulphuric acid it is dense
Contracting treatment effeciency is more preferably.
In this utility model, dinitro benzene spent acid is passed through into waste water preheating device, is passed through to denitration after preheating
In tower 2, denitration process are carried out, after process, the nitric acid flue gas containing dinitro benzene are drained into nitre from the gaseous phase outlet end of denitrating tower 2
In sour chiller 3, spraying mechanism in nitric acid chiller 3, is provided with, spraying mechanism is connected with mononitro-benzene feedway 4,
Constantly mononitro-benzene is provided to nitric acid chiller 3 by mononitro-benzene feedway 4, during cooling water cooling, plus
Enter mononitro-benzene, so as to be converted into mixing Nitrobenzol and nitric acid, be then passed through again to the first phase-separating device 5, nitro will be mixed
Benzene and nitric acid are separated.
What the liquid phase mouth end of denitrating tower 2 was formed is passed through to sulphuric acid concentration device 6 in product sulphuric acid, after three-level concentration,
Sulfur-bearing vapor dinitro benzene is entered into one-level extraction equipment 7 from the gaseous phase outlet end of sulphuric acid concentration device 6 and is once extracted
Take, in being then passed through two grades of extraction equipments 8 again, carry out second extraction, after having extracted, be passed into flue gas condensing chiller 9 again
In cooled down, waste gas is taken away by vacuum pump set 10, containing mixing Nitrobenzol sulfur-containing waste water then by second be separated dress
Put 11 to be separated, mixing Nitrobenzol and waste water are separated.
In sulphuric acid concentration device 6, remaining high concentration is then passed through into sulphuric acid chiller 12 in product sulphuric acid and is cooled down,
Obtain finished product sulfuric acid, you can recycled.
Claims (3)
1. it is a kind of it is concentrated in vacuo process dinitro benzene spent acid equipment, it is characterised in that include for preheating dinitro benzene spent acid
Spent acid preheating device (1), spent acid preheating device (1) is connected with denitrating tower (2), and the gaseous phase outlet end of denitrating tower (2) is connected with
Nitric acid chiller (3), the liquid-phase outlet end of denitrating tower (2) are connected with sulphuric acid concentration device (6)；
Described nitric acid chiller (3) is connected with the first phase-separating device (5)；
The gaseous phase outlet end of described sulphuric acid concentration device (6) is connected with one-level extraction equipment (7), and one-level extraction equipment (7) is even
Two grades of extraction equipments (8) are connected to, two grades of extraction equipments (8) are connected with flue gas condensing chiller (9), flue gas condensing chiller
(9) the second phase-separating device (11) is connected with, flue gas condensing chiller (9) is while be connected with vacuum pump set (10)；Described
The liquid-phase outlet end of sulphuric acid concentration device (6) is connected with sulphuric acid chiller (12).
2. it is according to claim 1 it is concentrated in vacuo process dinitro benzene spent acid equipment, it is characterised in that described sulphuric acid
Enrichment facility (6) concentrates mechanism using three-level.
3. it is according to claim 1 it is concentrated in vacuo process dinitro benzene spent acid equipment, it is characterised in that described nitric acid
Spraying mechanism is provided with chiller (3), spraying mechanism is connected with mononitro-benzene feedway (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621016109.5U CN206069370U (en) | 2016-08-31 | 2016-08-31 | A kind of equipment for processing dinitro benzene spent acid concentrated in vacuo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621016109.5U CN206069370U (en) | 2016-08-31 | 2016-08-31 | A kind of equipment for processing dinitro benzene spent acid concentrated in vacuo |
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| Publication Number | Publication Date |
|---|---|
| CN206069370U true CN206069370U (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621016109.5U Expired - Fee Related CN206069370U (en) | 2016-08-31 | 2016-08-31 | A kind of equipment for processing dinitro benzene spent acid concentrated in vacuo |
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| CN (1) | CN206069370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986250A (en) * | 2017-10-31 | 2018-05-04 | 湖北东方化工有限公司 | A kind of concentration unit of nitrotoleune sulfur waste acid treatment low concentration dust technology |
| CN108033433A (en) * | 2017-10-26 | 2018-05-15 | 青岛海湾集团有限公司 | A kind of industrial waste acid processing system |
-
2016
- 2016-08-31 CN CN201621016109.5U patent/CN206069370U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033433A (en) * | 2017-10-26 | 2018-05-15 | 青岛海湾集团有限公司 | A kind of industrial waste acid processing system |
| CN108033433B (en) * | 2017-10-26 | 2020-04-24 | 青岛海湾集团有限公司 | Industrial waste acid treatment system |
| CN107986250A (en) * | 2017-10-31 | 2018-05-04 | 湖北东方化工有限公司 | A kind of concentration unit of nitrotoleune sulfur waste acid treatment low concentration dust technology |
| CN107986250B (en) * | 2017-10-31 | 2020-08-04 | 湖北东方化工有限公司 | Concentration device for treating low-concentration dilute nitric acid by nitrotoluene waste sulfuric acid |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20170831 |