CN112762466A - Cyclohexane oxidation tail gas treatment method and device - Google Patents
Cyclohexane oxidation tail gas treatment method and device Download PDFInfo
- Publication number
- CN112762466A CN112762466A CN202011514464.6A CN202011514464A CN112762466A CN 112762466 A CN112762466 A CN 112762466A CN 202011514464 A CN202011514464 A CN 202011514464A CN 112762466 A CN112762466 A CN 112762466A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- oxidized
- turbine generator
- generator set
- cyclohexane oxidation
- 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.)
- Pending
Links
- 230000003647 oxidation Effects 0.000 title claims abstract description 40
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 40
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 230000001172 regenerating effect Effects 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000007800 oxidant agent Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 65
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention relates to a cyclohexane oxidation tail gas treatment method and a device, wherein the cyclohexane oxidation tail gas treatment method comprises the following steps: (a) heating the oxidized tail gas; (b) sending the heated oxidized tail gas into a turbine generator set for expansion power generation; (c) incinerating the expanded oxidized tail gas; (d) discharging the oxidized tail gas after incineration into the atmosphere; the invention discharges the oxidized tail gas discharged from the oxidation kettle after being treated by heating, expansion power generation and incineration, can thoroughly treat the oxidized tail gas to ensure that the oxidized tail gas reaches various emission standards, and can reasonably utilize the pressure of the tail gas and the combustion heat of RTO (regenerative thermal oxidizer), thereby recovering energy as much as possible, and having important functions of effectively utilizing energy, protecting the environment and the like.
Description
Technical Field
The invention relates to the technical field of cyclohexane oxidation tail gas treatment, in particular to a method and a device for treating cyclohexane oxidation tail gas.
Background
The tail gas of cyclohexane oxidation process in cyclohexanone production comes from oxidation kettle, and the general treatment method is that the tail gas is passed through tail gas absorption tower to recover partial useful organic components of cyclohexane, cyclohexanol and others, and then passed through pipeline and fed into torch to be discharged.
The tail gas absorbed by the absorption tower contains about 97% of nitrogen, about 2% of oxygen, about 0.35% of CO, about 0.45% of cyclohexane and other organic components, the pressure is about 1.1-1.2 MPa, and the temperature is about 3-4 ℃. The oxidation tail gas emission of the cyclohexanone device with the production scale of 10 ten thousand tons/year is about 16000-20000 Nm3And/h, the exhaust gas is large in exhaust amount and pressure and contains organic components such as cyclohexane and cyclohexanol with high values, a large amount of energy resources are wasted by directly exhausting the exhaust gas, and certain influence is generated on the environment. If the pressure of the tail gas and the combustion heat of the RTO are reasonably utilized, the oxidized tail gas can reach the emission standard, energy can be recycled as far as possible, and the method plays an important role in effectively utilizing energy, protecting the environment and the like.
Disclosure of Invention
The invention provides a method and a device for treating cyclohexane oxidation tail gas, aiming at solving the technical problems in the prior art, and the method and the device can utilize the residual pressure and the residual heat of the cyclohexane oxidation tail gas as much as possible.
The technical scheme for solving the technical problems is as follows: a cyclohexane oxidation tail gas treatment method comprises the following steps:
(a) heating the oxidized tail gas;
(b) sending the heated oxidized tail gas into a turbine generator set for expansion power generation;
(c) incinerating the expanded oxidized tail gas;
(d) and discharging the oxidized tail gas after incineration into the atmosphere.
The invention has the beneficial effects that: the oxidation tail gas discharged from the oxidation kettle is treated in a heating, expansion power generation and incineration mode and then discharged, so that the oxidation tail gas can be thoroughly treated to reach various emission standards, and the tail gas pressure can be reasonably utilized, so that the energy can be recycled as far as possible, and the method has important effects on effectively utilizing the energy, protecting the environment and the like.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, after the step (c), the method further comprises:
(c1) heating the oxidation tail gas in the step (a) by using the oxidation tail gas after incineration.
The beneficial effect of adopting the further scheme is that: the waste heat of the oxidized tail gas after incineration can be reasonably reused, the cost for heating the oxidized tail gas is reduced, and the energy consumption is reduced.
Further, step (b) is followed by:
(b1) and merging the electricity generated by the turbine generator set into a power grid.
The invention also provides a cyclohexane oxidation tail gas treatment device, which comprises a heat regenerator, a turbine generator set, an incinerator and a chimney; the air inlet of the heating end of the heat regenerator is filled with oxidized tail gas, and the air outlet of the heating end of the heat regenerator is communicated with the air inlet of the turbine generator set; the air outlet of the turbine generator set is communicated with the air inlet of the incinerator; the air outlet of the incinerator is communicated with the air inlet of the refrigerating end of the heat regenerator; and an air outlet of the refrigerating end of the heat regenerator is communicated with the chimney, so that the oxidized tail gas is discharged from the chimney.
Further, the system also comprises a grid-connected system; the grid-connected system is electrically connected with the turbine generator set, and electricity generated by the turbine generator set is merged into a power grid.
Furthermore, a pipeline for communicating the air outlet of the incinerator with the air inlet of the refrigerating end of the heat regenerator is subjected to heat preservation treatment.
Further, the incinerator is a regenerative thermal incinerator.
The beneficial effect of adopting the further scheme is that: the heat accumulating type thermal incinerator has high thermal efficiency, high purification efficiency, less maintenance workload and safe and reliable operation.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for treating cyclohexane oxidation tail gas according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the system comprises a heat regenerator, 2, a turbine generator set, 3, an incinerator, 4, a grid-connected system, 5 and a chimney.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
A cyclohexane oxidation tail gas treatment method comprises the following steps:
(a) and heating the oxidation tail gas.
(b) And sending the heated oxidized tail gas into a turbine generator set 2 for expansion power generation.
(b1) And the electricity generated by the turbine generator set 2 is merged into a power grid.
(c) And incinerating the expanded oxidation tail gas.
(c1) Heating the oxidation tail gas in the step (a) by using the oxidation tail gas after incineration.
(d) And discharging the oxidized tail gas after incineration into the atmosphere.
The invention discharges the oxidized tail gas discharged by the oxidation kettle after being treated in the modes of heating, expanding power generation and burning, and the organic matters of the treated tail gas not only can reach the 6 th part of the discharge standard of GB31571-2015 petrochemical industry pollutants and DB 37/2801.6-2018 volatile organic matters: the organic chemical industry and the like, and inorganic matters can also meet the emission requirements of GB16297-1996 integrated emission Standard for atmospheric pollutants. Moreover, the tail gas pressure and the RTO combustion heat can be reasonably utilized, the energy can be recovered as much as possible, the net power generation amount of the oxidized tail gas per 1 ten thousand standard squares is 450kW, and the whole process only needs to supplement 30 standard meters3The natural gas can achieve good energy-saving and environment-friendly effects.
According to the cyclohexane oxidation tail gas treatment method, the invention also provides a cyclohexane oxidation tail gas treatment device, which comprises a heat regenerator 1, a turbine generator set 2, a grid-connected system 4, an incinerator 3 and a chimney 5 as shown in fig. 1.
And oxidizing tail gas is introduced into an air inlet of a heating end of the heat regenerator 1 to heat the oxidizing tail gas. The temperature of the oxidized tail gas entering the heating end of the heat regenerator 1 is 14-20 ℃, and the air pressure is 0.8-1.05 MPa. After being heated, the oxidized tail gas leaves the heating end of the heat regenerator 1, the temperature is 160-180 ℃, and the air pressure is 0.78-1.03 MPa.
And an air outlet of the heating end of the heat regenerator 1 is communicated with an air inlet of the turbine generator set 2, and oxidized tail gas enters the turbine generator set 2 and then expands to generate power for recovering the residual pressure of the oxidized tail gas. And the grid-connected system 4 is electrically connected with the turbine generator set 2 to integrate the electricity generated by the turbine generator set 2 into the power grid. The temperature of the expanded oxidation tail gas is 1-20 ℃, and the air pressure is 0.005-0.008 MPa.
The air outlet of the turbine generator set 2 is communicated with the air inlet of the incinerator 3. The incinerator 3 incinerates the expanded oxidized tail gas to remove organic waste gas from the oxidized tail gas. In this embodiment, the incinerator 3 is a regenerative thermal incinerator, which has high thermal efficiency, high purification efficiency, less maintenance workload, and safe and reliable operation. The temperature of the oxidized tail gas after incineration rises, the temperature is 180-220 ℃, and the air pressure is 0.001-0.002 MPa.
An air outlet of the incinerator 3 is communicated with an air inlet of a refrigerating end of the heat regenerator 1, and the incinerated high-temperature oxidized tail gas heats the initial low-temperature oxidized tail gas to recover the waste heat of the oxidized tail gas, namely, the combustion heat of a Regenerative Thermal Oxidizer (RTO). And the pipeline for communicating the air outlet of the incinerator 3 with the air inlet of the refrigerating end of the heat regenerator 1 and the heat regeneration pipe 1 are subjected to heat preservation treatment, so that heat is prevented from being dissipated to the outside, and the waste heat of the oxidized tail gas is recovered as much as possible.
An air outlet of the refrigeration end of the heat regenerator 1 is communicated with a chimney 5, so that the oxidized tail gas is discharged from the chimney 5. Because the waste heat and the residual pressure of the oxidized tail gas are recovered as much as possible, the temperature of the oxidized tail gas is 30-50 ℃ when the oxidized tail gas is discharged through the chimney 5, and the air pressure is 300-500 Pa.
The cyclohexane oxidation tail gas treatment device can thoroughly treat oxidation tail gas to reach various emission standards, and can reasonably utilize the pressure of the tail gas, thereby recycling energy as much as possible and playing an important role in effectively utilizing energy, protecting the environment and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A cyclohexane oxidation tail gas treatment method is characterized by comprising the following steps:
(a) heating the oxidized tail gas;
(b) sending the heated oxidized tail gas into a turbine generator set for expansion power generation;
(c) incinerating the expanded oxidized tail gas;
(d) and discharging the oxidized tail gas after incineration into the atmosphere.
2. The method for treating cyclohexane oxidation tail gas according to claim 1, further comprising after the step (c):
(c1) heating the oxidation tail gas in the step (a) by using the oxidation tail gas after incineration.
3. The method for treating cyclohexane oxidation tail gas according to claim 1, further comprising after the step (b):
(b1) and merging the electricity generated by the turbine generator set into a power grid.
4. The cyclohexane oxidation tail gas treatment device is characterized by comprising a heat regenerator, a turbine generator set, an incinerator and a chimney; the air inlet of the heating end of the heat regenerator is filled with oxidized tail gas, and the air outlet of the heating end of the heat regenerator is communicated with the air inlet of the turbine generator set; the air outlet of the turbine generator set is communicated with the air inlet of the incinerator; the air outlet of the incinerator is communicated with the air inlet of the refrigerating end of the heat regenerator; and an air outlet of the refrigerating end of the heat regenerator is communicated with the chimney, so that the oxidized tail gas is discharged from the chimney.
5. The cyclohexane oxidation tail gas treatment device according to claim 4, further comprising a grid-connected system; the grid-connected system is electrically connected with the turbine generator set, and electricity generated by the turbine generator set is merged into a power grid.
6. The cyclohexane oxidation tail gas treatment device according to claim 4, characterized in that a pipeline communicating an air outlet of the incinerator and an air inlet of a refrigeration end of the heat regenerator is subjected to heat preservation treatment.
7. The cyclohexane oxidation tail gas treatment device according to claim 4, wherein the incinerator is a regenerative thermal incinerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011514464.6A CN112762466A (en) | 2020-12-21 | 2020-12-21 | Cyclohexane oxidation tail gas treatment method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011514464.6A CN112762466A (en) | 2020-12-21 | 2020-12-21 | Cyclohexane oxidation tail gas treatment method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112762466A true CN112762466A (en) | 2021-05-07 |
Family
ID=75694490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011514464.6A Pending CN112762466A (en) | 2020-12-21 | 2020-12-21 | Cyclohexane oxidation tail gas treatment method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112762466A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434982A (en) * | 2018-04-28 | 2018-08-24 | 杭州谱育科技发展有限公司 | Cyclohexanone exhaust gas processing device and method |
| CN214745785U (en) * | 2020-12-21 | 2021-11-16 | 襄阳航力机电技术发展有限公司 | Cyclohexane oxidation tail gas processing apparatus |
-
2020
- 2020-12-21 CN CN202011514464.6A patent/CN112762466A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434982A (en) * | 2018-04-28 | 2018-08-24 | 杭州谱育科技发展有限公司 | Cyclohexanone exhaust gas processing device and method |
| CN214745785U (en) * | 2020-12-21 | 2021-11-16 | 襄阳航力机电技术发展有限公司 | Cyclohexane oxidation tail gas processing apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102913919A (en) | Method for purifying high-concentration organic waste gas | |
| CN113234490A (en) | Gasification-based sludge comprehensive utilization system and treatment method | |
| CN214745785U (en) | Cyclohexane oxidation tail gas processing apparatus | |
| CN201406370Y (en) | Totally-enclosed sludge drying and burning device | |
| CN112762466A (en) | Cyclohexane oxidation tail gas treatment method and device | |
| CN112410050A (en) | Microwave plasma cracking gasification technology | |
| CN106807188A (en) | A kind of waste gas treatment process | |
| CN114733328A (en) | Multi-stream VOCs tail gas environment-friendly treatment and energy recovery system | |
| CN113069884B (en) | Chemical industry workshop waste gas environmental protection filters emission equipment | |
| CN211925719U (en) | Movable waste heat steam power generation device | |
| US20140230437A1 (en) | Method for generating heat energy and electrical energy from various types of waste and system for implementing said method | |
| CN111288430B (en) | Mobile waste heat steam power generation device and waste heat steam utilization method | |
| CN211925720U (en) | Waste heat steam power generation device | |
| CN114198161A (en) | Comprehensive utilization system for shaft seal heater of thermal power plant | |
| CN219199200U (en) | Waste gas series connection treatment facility | |
| RU2693567C1 (en) | Method of operation of steam-gas plant of power plant | |
| WO2021036099A1 (en) | Combined process for high-efficient waste heat recovery and denitration of exhaust gas of gas turbine | |
| WO2010064025A1 (en) | Method, system and plant for treating process gasses, co generative thermal oxidizer | |
| CN221109320U (en) | Garbage incineration fly ash treatment system | |
| CN111943475A (en) | Sludge treatment method and system | |
| CN104832225A (en) | Household garbage incineration low-pressure steam power generation system | |
| CN221035769U (en) | VOCs innocent treatment system | |
| CN219194881U (en) | Carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration | |
| JP2001029939A (en) | Wastewater treatment facility | |
| CN216716228U (en) | Waste incineration system and waste incineration waste heat recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ji Zengyu Inventor after: He Liang Inventor after: Ma Yifei Inventor after: Lu Pingan Inventor after: Zhang Dian Inventor after: Yuan Kui Inventor after: Liu Sijia Inventor before: Ji Zengyu Inventor before: He Liang Inventor before: Ma Yifei Inventor before: Lu Pingan Inventor before: Zhang Dian Inventor before: Yuan Kui Inventor before: Guo Wan Inventor before: Liu Shijia |