CN205759777U - Sulfur ammonium enrichment facility - Google Patents
Sulfur ammonium enrichment facility Download PDFInfo
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- CN205759777U CN205759777U CN201620452761.5U CN201620452761U CN205759777U CN 205759777 U CN205759777 U CN 205759777U CN 201620452761 U CN201620452761 U CN 201620452761U CN 205759777 U CN205759777 U CN 205759777U
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Abstract
This utility model relates to a kind of sulfur ammonium enrichment facility, adds the heater of thermal medium and condenser that the steam for being discharged separator condenses including the separator for ammonium sulfate solution carries out concentration, for providing to separator；Wherein, described separator at least includes triple effect separator, is connected by ammonium sulfate solution conveyance conduit between each effect separator；In addition to an effect heater is provided with external steam trace, remaining is respectively imitated heater and is connected with the indirect steam pipeline of a upper effect separator；Described condenser is connected with the indirect steam pipeline of last effect separator.
Description
Technical field
This utility model relates to a kind of sulfur ammonium enrichment facility.
Background technology
Acrylonitrile is a kind of important Organic Chemicals, and industry acrylonitrile installation uses propylene mostly
Ammonia oxidation produces acrylonitrile.Raw material propylene, ammonia and air react generation third in a fluidized bed reactor
Alkene nitrile, and the by-product such as acetonitrile, hydrocyanic acid.Product enters chilling tower, uses sulfuric acid scrubbing
Unreacted ammonia in product, generates dilute ammonium sulfate solution.Dilute ammonium sulfate solution mainly contains sulfur ammonium and water,
Also have a small amount of acrylonitrile, acetonitrile and hydrocyanic acid.In existing acrylonitrile installation sulfur ammonium unit, the most logical
Cross and be evaporated dilute ammonium sulfate solution concentrating, crystallizing, thus obtain ammonium sulfate products.Evaporation is one to be had
The high energy consumption process of phase transformation, by dilute ammonium sulfate solution evaporation and concentration to aimed concn, needs big in solution
The water carburation by evaporation of amount, as can not be fully recycled these indirect steams, on the one hand will result in energy
Waste, increases steam consumption, on the other hand also will add the load of subsequent condensation device.At present, often
Dilute sulfur ammonium evaporating and concentrating process mainly use single effect evaporation and double-effect evaporation, but these process energy
Utilization ratio is low, energy consumption is high.
CN101092266A discloses the method evaporation of a kind of stripping or rectification and purifies dilute ammonium sulfate solution,
Dilute ammonium sulfate solution is sent into stripper or rectifying column, and it is light that tower top steams the Organic substance such as acrylonitrile, hydrocyanic acid
Component and water, tower reactor obtains the heavy constituent containing polymer, lateral line withdrawal function ammonium sulfate solution.But the method obtains
The ammonium sulfate solution concentration arrived is relatively low, needs further evaporation and concentration.CN101928016A、
CN102657946A and CN203108242U uses the method for double-effect evaporation to concentrate dilute ammonium sulfate solution,
To obtain ammonium sulfate products.Compared with single effect evaporation, double-effect evaporation make use of indirect steam, Appropriate application
The heat of steam, but steam condensate is expelled directly out, and energy is not recycled utilization, causes condensation
The load of device is the biggest.Generally speaking, current sulfur ammonium evaporating concentrating method energy utilization efficiency is relatively low,
Energy consumption is higher, need to improve raising further.
Summary of the invention
Technical problem to be solved in the utility model is that prior art exists that energy utilization efficiency is low, energy
Consume high problem, propose a kind of new sulfur ammonium enrichment facility.The feature of this device is to save sulfur ammonium
The steam consumption concentrated, improves the comprehensive utilization ratio of steam, and the purity of sulfur ammonium concentrated solution is high, produces
Quality is good.
For solving above-mentioned technical problem, the technical scheme that this utility model is taked is as follows: a kind of sulfur ammonium is dense
Compression apparatus, including the separator for ammonium sulfate solution carries out concentration, for providing to separator
Add the heater of thermal medium and condenser that the steam for being discharged separator condenses；Wherein,
Described separator at least includes triple effect separator, by ammonium sulfate solution conveyance conduit between each effect separator
Connection；In addition to an effect heater is provided with external steam trace, remaining respectively imitates heater and upper
The indirect steam pipeline of effect separator is connected；Described condenser steams with the secondary of last effect separator
Steam pipe road is connected.
In technique scheme, described separator includes triple effect separator.
In technique scheme, described separator includes quadruple effect separator.
In technique scheme, described separator includes five effect separators.
In technique scheme, described device also includes the lime set for collecting an effect heater condensed fluid
Tank.
In technique scheme, described device also include for except one effect heater condensed fluid in addition to other
Each lime set heat exchanger imitating heater condensed heat transfer fluid.
This utility model is by using multi-effect evaporation scheme to the dilute ammonium sulfate solution from acrylonitrile installation
Being evaporated concentrating, an effect evaporation employing steam heats, remaining secondary that respectively effect evaporation employing upper is imitated
Steam is as thermal source, and an effect steam condensate direct reuse, remaining is respectively imitated steam condensate and is preferably used as propylene
The thermal source of nitrile other unit of device returns again to chilling tower, thus obtains saturated sulfur ammonium concentrated solution.This practicality
The novel steam consumption saving the concentration of sulfur ammonium, improves the comprehensive utilization ratio of steam, and sulfur ammonium concentrates
The purity of liquid is high, good product quality.This utility model is preferably other unit of acrylonitrile installation and provides heat
Source, creates advantage for acrylonitrile installation whole energy.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present utility model, as a example by triple effect separates.
In Fig. 1,1 is dilute ammonium sulfate solution, and 2 is steam, and 3 is steam condensate, and 4 is an effect secondary
Steam, 5 is an effect sulfur ammonium concentrated solution, and 6 is two effect steam condensates, and 7 is two effect indirect steams, and 8 are
Two effect sulfur ammonium concentrated solutions, 9 is triple effect steam condensate, 10 triple effect indirect steams, and 11 is triple effect steam
Lime set, 12 is saturated sulfur ammonium concentrated solution, and F1 is an effect separator, and F2 is two effect separators, F3
For triple effect separator, E1 is an effect heater, and E2 is two effect heaters, and E3 is triple effect heater,
E4 is lime set heat exchanger.
Below in conjunction with accompanying drawing, the present invention is described in detail.
From acrylonitrile installation dilute ammonium sulfate solution 1 through one effect heater E1 heating after, enter one effect
Separator F1 carries out vapor-liquid separation, and an effect heater is with steam 2 as thermal source, and one imitates sulfur ammonium concentrated solution
5 deliver to two effect separator F2, and steam condensate 3 direct reuse delivers to lime set tank；One effect sulfur ammonium concentrated solution
By two effect heater E2, the indirect steam 4 from an effect separator is used to carry out heat exchange, then
Carrying out vapor-liquid separation at two effect separators, two effect sulfur ammonium concentrated solutions 8 deliver to triple effect separator F3, and two
Secondary steam condensate 6 delivers to lime set heat exchanger E4；Two effect sulfur ammonium concentrated solutions pass through triple effect heater E3,
Use the indirect steam 7 from two effect separators to carry out heat exchange, then carry out vapour-liquid at triple effect separator
Separating, return chilling tower after the condensation of vapor phase stream 10 condensed device, liquid phase stream 12 is saturated sulfur ammonium
Concentrated solution, indirect steam lime set delivers to lime set heat exchanger E4；From two effect heaters and triple effect heating
The steam condensate of device is first used as the thermal source of other units of acrylonitrile installation by lime set heat exchanger, so
After return again to chilling tower.
Wherein, other units of described acrylonitrile installation include that propylene feedstocks heater, ammonia raw material add
Hot device, Heat Exchanger in Circulating Water System etc..
In technique scheme, described in dilute ammonium sulfate solution of acrylonitrile installation, sulfur ammonium content is
15～30%, water content is 70～85%, and acrylonitrile content is 0.01～2%, and ethane nitrile content is 0.01～2%,
Hydrocyanic acid content is 0.01～2%.
In technique scheme, the operation pressure of a described effect separator is 0.08～0.8MPa (A), behaviour
It it is 93～170 DEG C as temperature；The operation pressure of two effect separators is 0.04～0.09MPa (A), operation temperature
Degree is 97～76 DEG C；The operation pressure of triple effect separator is 0.01～0.07MPa (A), and operation temperature is
90～46 DEG C.
In technique scheme, described one effect heater steam specification be pressure be 0.2～2MPa (A),
Temperature is 120～300 DEG C.
In technique scheme, described multi-effect evaporation scheme by the acrylonitrile in dilute ammonium sulfate solution, acetonitrile,
Sour and a part of water of hydrogen nitrile steams, and in obtained saturated ammonium sulfate solution, sulfur ammonium content is 45～65%,
Acrylonitrile, acetonitrile and hydrocyanic acid content are below 5ppm.
Below by embodiment, the invention will be further elaborated.
Detailed description of the invention
[embodiment 1]
Use Fig. 1 shown device, from dilute ammonium sulfate solution 1000kg/h of certain acrylonitrile installation, contain
Having sulfur ammonium 18.4%, acrylonitrile 0.2%, ethane nitrile content is 0.1%, hydrocyanic acid 0.2%, and remaining is water.
Dilute ammonium sulfate solution by one effect heater heating, one effect heater use 1.0MPa (A), 200 DEG C
Steam 270kg/h, subsequently into an effect separator evaporation, an effect separator operation pressure is
0.15MPa (A), operation temperature is 112 DEG C.One effect sulfur ammonium concentrated solution delivers to two effect separators, two effects
The indirect steam that heater uses an effect separator to steam is thermal source, and two effect separator operation pressure are
0.07MPa (A), operation temperature is 91 DEG C.Two effect sulfur ammonium concentrated solutions deliver to triple effect separator, triple effect
The indirect steam that heater uses two effect separators to steam is thermal source, and triple effect separator operation pressure is
0.04MPa (A), operation temperature is 79 DEG C, and separator top vapor phase stream enters condenser condensation,
It is 54.2% that the saturated sulfur ammonium that bottom obtains concentrates molten sulfur ammonium content, and acrylonitrile content is 0.4ppm, second
Nitrile content is 3ppm, and hydrocyanic acid content is 0.6ppm.Two effect heater and the steam of triple effect heater
Lime set is used as propylene feedstocks heater thermal source, recyclable 32.4kW heat, is then back to chilling tower.
As can be seen here, using technical scheme, it is few that sulfur ammonium concentrates the quantity of steam consumed, energy
Amount comprehensive utilization ratio is high；The purity of sulfur ammonium concentrated solution is high, good product quality.
[embodiment 2]
Use Fig. 1 shown device, from dilute ammonium sulfate solution 1000kg/h of certain acrylonitrile installation, contain
Having sulfur ammonium 24.6%, acrylonitrile 0.3%, ethane nitrile content is 0.1%, hydrocyanic acid 0.2%, and remaining is water.
Dilute ammonium sulfate solution by one effect heater heating, one effect heater use 0.6MPa (A), 180 DEG C
Steam 185kg/h, subsequently into an effect separator evaporation, an effect separator operation pressure is
0.09MPa (A), operation temperature is 98 DEG C.One effect sulfur ammonium concentrated solution delivers to two effect separators, two effects
The indirect steam that heater uses an effect separator to steam is thermal source, and two effect separator operation pressure are
0.05MPa (A), operation temperature is 82 DEG C.Two effect sulfur ammonium concentrated solutions deliver to triple effect separator, triple effect
The indirect steam that heater uses two effect separators to steam is thermal source, and triple effect separator operation pressure is
0.03MPa (A), operation temperature is 71 DEG C, and separator top vapor phase stream enters condenser condensation,
It is 48.7% that the saturated sulfur ammonium that bottom obtains concentrates molten sulfur ammonium content, and acrylonitrile content is 1ppm, second
Nitrile content is 4ppm, and hydrocyanic acid content is 1ppm.The steam of two effect heaters and triple effect heater coagulates
Liquid is used as ammonia feed heater thermal source, recyclable 19.9kW heat, is then back to chilling tower.
As can be seen here, using technical scheme, it is few that sulfur ammonium concentrates the quantity of steam consumed, energy
Amount comprehensive utilization ratio is high；The purity of sulfur ammonium concentrated solution is high, good product quality.
[embodiment 3]
Use Fig. 1 shown device, from dilute ammonium sulfate solution 1000kg/h of certain acrylonitrile installation, contain
Having sulfur ammonium 23.8%, acrylonitrile 0.2%, ethane nitrile content is 0.2%, hydrocyanic acid 0.2%, and remaining is water.
Dilute ammonium sulfate solution by one effect heater heating, one effect heater use 0.6MPa (A), 180 DEG C
Steam 180kg/h, subsequently into an effect separator evaporation, an effect separator operation pressure is
0.12MPa (A), operation temperature is 106 DEG C.One effect sulfur ammonium concentrated solution delivers to two effect separators, two effects
The indirect steam that heater uses an effect separator to steam is thermal source, and two effect separator operation pressure are
0.08MPa (A), operation temperature is 95 DEG C.Two effect sulfur ammonium concentrated solutions deliver to triple effect separator, triple effect
The indirect steam that heater uses two effect separators to steam is thermal source, and triple effect separator operation pressure is
0.05MPa (A), operation temperature is 83 DEG C.Triple effect sulfur ammonium concentrates and delivers to quadruple effect separator, and quadruple effect adds
The indirect steam that hot device uses triple effect separator to steam is thermal source, and quadruple effect separator operation pressure is
0.02MPa (A), operation temperature is 62 DEG C, and separator top vapor phase stream enters condenser condensation,
It is 60.4% that the saturated sulfur ammonium that bottom obtains concentrates molten sulfur ammonium content, and acrylonitrile content is less than 1ppm,
Ethane nitrile content is less than 1ppm, and hydrocyanic acid content is less than 1ppm.Two effect heaters and triple effect heaters
Steam condensate is used as ammonia feed heater thermal source, recyclable 32.1kW heat, is then back to chilling tower.
As can be seen here, using technical scheme, it is few that sulfur ammonium concentrates the quantity of steam consumed, energy
Amount comprehensive utilization ratio is high；The purity of sulfur ammonium concentrated solution is high, good product quality.
[comparative example]
Comparative example uses the device similar to [embodiment 1], and except for the difference that, comparative example uses economic benefits and social benefits
Evaporation carries out sulfur ammonium concentration, and two effect steam condensates do not enter into lime set heat exchanger.
From dilute ammonium sulfate solution 1000kg/h of certain acrylonitrile installation, containing sulfur ammonium 18.4%, acrylonitrile
0.2%, ethane nitrile content is 0.1%, hydrocyanic acid 0.2%, and remaining is water.
Dilute ammonium sulfate solution by one effect heater heating, one effect heater use 1.0MPa (A), 200 DEG C
Steam 393kg/h, subsequently into an effect separator evaporation, an effect separator operation pressure is
0.15MPa (A), operation temperature is 112 DEG C.One effect sulfur ammonium concentrated solution delivers to two effect separators, two effects
The indirect steam that heater uses an effect separator to steam is thermal source, and two effect separator operation pressure are
0.04MPa (A), operation temperature is 79 DEG C, and separator top vapor phase stream enters condenser condensation,
It is 54.2% that the saturated sulfur ammonium that bottom obtains concentrates molten sulfur ammonium content, and acrylonitrile content is 4ppm, second
Nitrile content is 11ppm, and hydrocyanic acid content is 5ppm.Two effect heater steam lime sets directly return urgency
Cold tower.
Compared with [embodiment 1], the concentration of dilute ammonium sulfate solution is improved to 53.6% from 18.4%, right
Ratio steam consumption adds 45.9%, and cooler load adds 46.7%.As can be seen here, this is used
The technical scheme of utility model, steam consumption is few, and total energy approach efficiency is high, moreover it is possible to for acrylonitrile
Other devices of device provide thermal source, and the sulfur ammonium concentrated solution purity obtained is higher, better quality.
Claims (6)
1. a sulfur ammonium enrichment facility, including the separator for ammonium sulfate solution being carried out concentration,
The heater of thermal medium is added and the steam for being discharged separator is carried out for providing to separator
The condenser of condensation；It is characterized in that, described separator at least includes triple effect separator, respectively imitates separation
Connected by ammonium sulfate solution conveyance conduit between device；Except an effect heater is provided with external heating steam pipe
Outside road, remaining is respectively imitated heater and is connected with the indirect steam pipeline of a upper effect separator；Described condensation
Device is connected with the indirect steam pipeline of last effect separator.
Sulfur ammonium enrichment facility the most according to claim 1, it is characterised in that described separator
Including triple effect separator.
Sulfur ammonium enrichment facility the most according to claim 1, it is characterised in that described separator
Including quadruple effect separator.
Sulfur ammonium enrichment facility the most according to claim 1, it is characterised in that described separator
Including five effect separators.
Sulfur ammonium enrichment facility the most according to claim 1, it is characterised in that described device is also
Including the lime set tank for collecting an effect heater condensed fluid.
Sulfur ammonium enrichment facility the most according to claim 1, it is characterised in that described device is also
Including for changing with other lime sets respectively imitating heater condensed heat transfer fluid in addition to an effect heater condensed fluid
Hot device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620452761.5U CN205759777U (en) | 2016-05-18 | 2016-05-18 | Sulfur ammonium enrichment facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620452761.5U CN205759777U (en) | 2016-05-18 | 2016-05-18 | Sulfur ammonium enrichment facility |
Publications (1)
| Publication Number | Publication Date |
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| CN205759777U true CN205759777U (en) | 2016-12-07 |
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ID=58120234
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620452761.5U Active CN205759777U (en) | 2016-05-18 | 2016-05-18 | Sulfur ammonium enrichment facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618181A (en) * | 2022-03-17 | 2022-06-14 | 北京道思克矿山装备技术有限公司 | System and method for recycling hydrocyanic acid in pentenenitrile synthesis reaction |
-
2016
- 2016-05-18 CN CN201620452761.5U patent/CN205759777U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114618181A (en) * | 2022-03-17 | 2022-06-14 | 北京道思克矿山装备技术有限公司 | System and method for recycling hydrocyanic acid in pentenenitrile synthesis reaction |
| CN114618181B (en) * | 2022-03-17 | 2023-12-08 | 北京道思克矿山装备技术有限公司 | System and method for recycling hydrocyanic acid in pentenenitrile synthesis reaction |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |