CN211575954U - Tail end heat energy utilization and emission reduction process device for toluene production benzoic acid process - Google Patents
Tail end heat energy utilization and emission reduction process device for toluene production benzoic acid process Download PDFInfo
- Publication number
- CN211575954U CN211575954U CN201922070972.9U CN201922070972U CN211575954U CN 211575954 U CN211575954 U CN 211575954U CN 201922070972 U CN201922070972 U CN 201922070972U CN 211575954 U CN211575954 U CN 211575954U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- refrigerant
- pipeline
- outlet
- mixed gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model relates to a terminal heat utilization and emission reduction process units of toluene production benzoic acid technology, multichannel heat exchanger's first heat medium access connection mist input pipeline, multichannel heat exchanger's first heat medium export is through the pipe connection oil water separator, oil water separator's mist exit linkage multichannel heat exchanger's first refrigerant import, multichannel heat exchanger's first refrigerant exit linkage heat exchanger's refrigerant import, heat exchanger's heat medium access connection to second heat exchanger's refrigerant outlet line, heat exchanger's heat medium exit linkage to second heat exchanger's refrigerant inlet line, heat exchanger's refrigerant exit linkage to turbo generator set, turbo generator set's exit linkage to multichannel heat exchanger's second refrigerant import, multichannel heat exchanger's second refrigerant exit linkage adsorber. The utility model discloses the mist electricity generation is 260kw/hr, has saved three sets of adsorption equipment, produces economic benefits every year and reaches 470 ten thousand.
Description
Technical Field
The utility model belongs to energy-concerving and environment-protective field relates to the heat utilization technique of toluene continuous catalytic oxidation production benzoic acid, especially a terminal heat utilization and the emission reduction process units of toluene continuous catalytic oxidation production benzoic acid technology.
Background
The process for producing the benzoic acid by the continuous catalytic oxidation of the toluene comprises four stages of fractional condensation, and the finally obtained mixed gas (containing water vapor and the toluene) has the temperature of 40 ℃ and the pressure of 0.535 MPa. The mixed gas contains a certain amount of toluene, so that the mixed gas has high value, more importantly, the mixed gas cannot be discharged to the atmosphere, the toluene content in the mixed gas must be reduced until the load discharge requirement is met, and the processes of toluene adsorption, water vapor desorption, oil-water separation and the like in the mixed gas are required to be performed by a high-efficiency adsorption carbon fiber felt adsorber, so that the standard discharge is realized finally. Since the mixed gas is not only high in toluene content but also high in temperature, which is disadvantageous in adsorption and low in efficiency, it is necessary to treat this portion of the mixed gas again, and not only the toluene is further separated, but also the calorific value of the mixed gas is further utilized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's weak point, provide the terminal heat utilization and the reduction of discharging technology of toluene continuous catalytic oxidation production benzoic acid technology, be used for the electricity generation with terminal heat, further energy saving and emission reduction.
The utility model provides a technical scheme that technical problem adopted is:
a tail end heat energy utilization and emission reduction process device for a process for producing benzoic acid by toluene comprises a multi-channel heat exchanger, an oil-water separator, a heat exchanger, a turbine generator set and an adsorber; a first heating medium inlet of the multi-channel heat exchanger is connected with a mixed gas input pipeline, a first heating medium outlet of the multi-channel heat exchanger is connected with a mixed gas inlet of the oil-water separator through a pipeline, a mixed gas outlet of the oil-water separator is connected with a first refrigerant inlet of the multi-channel heat exchanger through a pipeline, a first refrigerant outlet of the multi-channel heat exchanger is connected with a refrigerant inlet of the heat exchanger through a pipeline, a heating medium inlet of the heat exchanger is connected with a refrigerant outlet pipeline of the second heat exchanger, a heating medium outlet of the heat exchanger is connected with a refrigerant inlet pipeline of the second heat exchanger, a refrigerant outlet of the heat exchanger is connected with a heat source inlet of the turbo generator set through a pipeline, a heat source outlet of the turbo generator set is connected with a second refrigerant inlet of the multi-, the outlet of the adsorber is connected with a mixed gas discharge pipeline.
And a toluene outlet of the oil-water separator is connected to a toluene storage tank through a toluene output pipeline, and a condensed water outlet of the oil-water separator is connected to a subsequent drainage treatment system through a condensed water output pipeline.
The utility model has the advantages that:
1. four sets of adsorption equipment need be used to traditional treatment process, the utility model discloses only use one set, saved three sets of adsorption equipment. The economic benefit is up to 470 ten thousand per year.
2. The power generation of the mixed gas is 260kw/hr, the power consumption of the three sets of adsorption devices is saved by 90kw/hr, the power charge per degree is 0.8 yuan per year according to 8000 hours, and 224 ten thousand yuan per year is saved.
3. Three sets of adsorption devices are saved, the amount of water vapor desorbed per hour is 1.8T, the sewage treatment cost per ton is 150 yuan, and the sewage treatment cost is saved by 216 ten thousand yuan per year.
4. The utility model reduces 3 sets of 3 boxes of 8-core activated carbon fiber felt adsorbers and saves 32.4 ten thousand of expenses each year.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention should not be limited thereto.
A tail end heat energy utilization and emission reduction process device for a process for producing benzoic acid by continuous catalytic oxidation of toluene comprises a multi-channel heat exchanger 1, an oil-water separator 2, a heat exchanger 3, a turbine generator set 4 and an adsorber 5. The mixed gas after four-step condensation is connected with a first heating medium inlet 6 of the multi-channel heat exchanger 1 through a pipeline, a first heating medium outlet 7 of the multi-channel heat exchanger 1 is connected with a mixed gas inlet of the oil-water separator 2 through a pipeline, a toluene outlet 12 of the oil-water separator 2 is connected with a toluene output pipeline, a mixed gas outlet 14 of the oil-water separator 2 is connected with a first refrigerant inlet 8 of the multi-channel heat exchanger 1 through a pipeline, and a condensed water outlet 13 of the oil-water separator 2 is connected to a subsequent drainage treatment system through a condensed water output pipeline. The first refrigerant outlet 9 of the multichannel heat exchanger 1 is connected with the refrigerant inlet 15 of the heat exchanger 3 through a pipeline, the heat medium inlet 17 of the heat exchanger 3 is connected with a 95 ℃ hot water pipeline, the heat medium outlet 18 of the heat exchanger 3 is connected with a 75 ℃ hot water pipeline, the refrigerant outlet 16 of the heat exchanger 3 is connected with the heat source inlet of the turbo generator set 4 through a pipeline, the heat source outlet of the turbo generator set 4 is connected with the second refrigerant inlet 10 of the multichannel heat exchanger 1 through a pipeline, the second refrigerant outlet 11 of the multichannel heat exchanger 1 is connected with the inlet of the adsorber 5 through a pipeline, and the outlet of the adsorber 5 is connected with a mixed.
The using method of the device comprises the following steps:
the mixed gas (I) after four-step condensation enters the multi-channel heat exchanger 1 from the first heat medium inlet 6 of the multi-channel heat exchanger 1, the temperature is further reduced to become mixed gas (Q) with the temperature of 2-3 ℃, the mixed gas (Q) is discharged from the first heat medium outlet 7 of the multi-channel heat exchanger 1 and then enters the oil-water separator 2, moisture and toluene in the mixed gas are further removed, the mixed gas (S) is obtained from the mixed gas outlet of the oil-water separator 2, and water vapor is almost little. In order to fully utilize the potential of the mixed gas and facilitate subsequent power generation, the mixed gas (S) enters the multi-channel heat exchanger 1 again from the first refrigerant inlet 8 of the multi-channel heat exchanger 1 for heat exchange, the temperature of the mixed gas is increased to about 10 ℃, and the mixed gas is also a low-temperature source for effectively utilizing the mixed gas from the turbine generator. The heated mixed gas (X) discharged from the first refrigerant outlet 9 of the multi-channel heat exchanger 1 is introduced into the heat exchanger 3, and heated to 70 ℃ by 95 ℃ hot water, and the heat-exchanged 95 ℃ hot water (K) is converted into 75 ℃ hot water (T). At this time, the mixed gas (Y) from the heat exchanger 3 has higher potential, and directly drives a turbine generator to generate 260kw/hr of electric power (U), the temperature and pressure of the discharged mixed gas (V) are respectively reduced to-10 to-8 ℃ and 1.0kgf due to the throttling process, the mixed gas (V) is a good refrigerant, and enters the multi-channel heat exchanger 1 from the second refrigerant inlet 10 of the multi-channel heat exchanger 1 to cool the mixed gas (I) and the mixed gas (S) to the designed temperature. The mixed gas (W) heated to 24 ℃ per se is discharged from the second refrigerant outlet 11 of the multi-channel heat exchanger 1, enters the adsorber 5 and is adsorbed to obtain the exhaust gas (Z) meeting the emission standard.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements are all within the protection scope of the present invention.
Claims (2)
1. A tail end heat energy utilization and emission reduction process device for a toluene benzoic acid production process is characterized in that: the system comprises a multi-channel heat exchanger, an oil-water separator, a heat exchanger, a turbine generator set and an adsorber; a first heating medium inlet of the multi-channel heat exchanger is connected with a mixed gas input pipeline, a first heating medium outlet of the multi-channel heat exchanger is connected with a mixed gas inlet of the oil-water separator through a pipeline, a mixed gas outlet of the oil-water separator is connected with a first refrigerant inlet of the multi-channel heat exchanger through a pipeline, a first refrigerant outlet of the multi-channel heat exchanger is connected with a refrigerant inlet of the heat exchanger through a pipeline, a heating medium inlet of the heat exchanger is connected with a refrigerant outlet pipeline of the second heat exchanger, a heating medium outlet of the heat exchanger is connected with a refrigerant inlet pipeline of the second heat exchanger, a refrigerant outlet of the heat exchanger is connected with a heat source inlet of the turbo generator set through a pipeline, a heat source outlet of the turbo generator set is connected with a second refrigerant inlet of the multi-, the outlet of the adsorber is connected with a mixed gas discharge pipeline.
2. The process arrangement of claim 1, wherein: a toluene outlet of the oil-water separator is connected to a toluene storage tank through a toluene output pipeline, and a condensed water outlet of the oil-water separator is connected to a subsequent drainage treatment system through a condensed water output pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922070972.9U CN211575954U (en) | 2019-11-27 | 2019-11-27 | Tail end heat energy utilization and emission reduction process device for toluene production benzoic acid process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922070972.9U CN211575954U (en) | 2019-11-27 | 2019-11-27 | Tail end heat energy utilization and emission reduction process device for toluene production benzoic acid process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211575954U true CN211575954U (en) | 2020-09-25 |
Family
ID=72533385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922070972.9U Active CN211575954U (en) | 2019-11-27 | 2019-11-27 | Tail end heat energy utilization and emission reduction process device for toluene production benzoic acid process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211575954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864577A (en) * | 2019-11-27 | 2020-03-06 | 天津科技大学 | Tail end heat energy utilization and emission reduction process for toluene to produce benzoic acid |
-
2019
- 2019-11-27 CN CN201922070972.9U patent/CN211575954U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864577A (en) * | 2019-11-27 | 2020-03-06 | 天津科技大学 | Tail end heat energy utilization and emission reduction process for toluene to produce benzoic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102287244B (en) | The heat of collecting carbonic anhydride and compression unit and steam or combined cycle power plant is integrated | |
| CN201662132U (en) | System equipment of power plant for supplying heat to buildings | |
| CN105508051B (en) | High-temperature gas-cooled reactor helium gas indirect cyclic process hydrogen manufacturing coupled electricity-generation system and method | |
| JP2020525638A (en) | Fuel production reaction system, power plant peak adjustment system and power plant | |
| CN201795471U (en) | Flue gas afterheat utilization system | |
| CN215196186U (en) | Solar flash evaporation desorption carbon capture system integrated with liquid storage system | |
| CN211575954U (en) | Tail end heat energy utilization and emission reduction process device for toluene production benzoic acid process | |
| CN102321525B (en) | Production equipment and production method of compressed biological natural gas for vehicle | |
| CN110864577A (en) | Tail end heat energy utilization and emission reduction process for toluene to produce benzoic acid | |
| CN105314611B (en) | A kind of double pressurized method dust technology device | |
| CN105561742B (en) | A kind of solar energy and geothermal energy united auxiliary carbon dioxide trapping system | |
| CN215939370U (en) | Tail gas recovery, purification and cyclic utilization system of roller-hearth annealing furnace | |
| CN115539161A (en) | Carbon dioxide energy storage system | |
| CN214196426U (en) | Integrated system for air separation energy storage coupling oxygen-enriched combustion carbon capture of thermal power plant | |
| CN105797541B (en) | A kind of hydrate carbon trapping system of solar photovoltaic driving | |
| CN205187873U (en) | Dual pressure dilute nitric acid device | |
| CN205760478U (en) | A kind of hydrate carbon trapping system of solar photovoltaic driving | |
| CN104033250B (en) | Integration oxygen-enriched combusting power system | |
| CN203639436U (en) | Biomass gas deoxidation complete device | |
| CN210915961U (en) | Skid-mounted integrated test gas recovery equipment | |
| CN103277154B (en) | The CO2 of coal fired power plant based on single cylinder back pressure turbine removes integrated system | |
| CN110922323B (en) | Thermal-electric coupling high-efficiency energy-saving emission-reduction process for producing benzoic acid by continuous catalytic oxidation of toluene | |
| CN211120807U (en) | Thermoelectric coupling efficient energy-saving emission-reducing process device for producing benzoic acid from toluene | |
| CN205187871U (en) | Heat structure is crossed to dual pressure dilute nitric acid device's ammonia | |
| CN201666186U (en) | Gas turbine combined solar heat energy utilization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |