CN103961966A - System for solving ultrahigh gas temperature of dynamic wave furnace of waste acid recycling device - Google Patents
System for solving ultrahigh gas temperature of dynamic wave furnace of waste acid recycling device Download PDFInfo
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- CN103961966A CN103961966A CN201410200389.4A CN201410200389A CN103961966A CN 103961966 A CN103961966 A CN 103961966A CN 201410200389 A CN201410200389 A CN 201410200389A CN 103961966 A CN103961966 A CN 103961966A
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- dynamic wave
- acid
- furnace gas
- gas temperature
- liquid separator
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Abstract
The invention relates to the field of alkylation assorted waste acid recycling devices in the petroleum refining process and in particular relates to a system for solving ultrahigh gas temperature of a dynamic wave furnace of a waste acid recycling device. The system comprises a dynamic wave gas-liquid separator, a filler washing tower and an electric defogger which are connected through a pipeline; the system is characterized in that furnace gas firstly enter a dynamic wave exchange column; the dynamic wave exchange column is connected with one or more reversed injection pipes; a nozzle control valve is arranged on each reversed injection pipe and used for controlling the pressure of the reversed injection pipe; the reversed injection pipes are connected with the dynamic wave gas-liquid separator through a dynamic wave dilute acid pump; the furnace gas enters the dynamic wave gas-liquid separator and carries out gas-liquid separation, then the furnace gas enters the filler washing tower to be washed and cooled, finally the furnace gas enters the electric defogger and removes the residual acid fog. The system is capable of reducing the temperature of a furnace gas outlet of a dynamic wave scrubber, facilitating long-period and safe operation of the device, improving the treatment capacity of the device, reducing the dilute acid treatment capacity and reducing sewage treatment load and cost.
Description
Technical field
The present invention relates to the supporting acid-restoring plant of alkylation field in a kind of petroleum refining process, specifically a kind of system that solves acid-restoring plant dynamic wave furnace gas temperature superelevation.
Background technology
Sulfuric acid alkylation plant is at present as the Main Means of producing high grade clean gasoline (blend component oil), this device in process of production, every production 1t product will be produced the Waste Sulfuric Acid that 80～90kg, concentration are 85～90%, and its composition of this Waste Sulfuric Acid, except sulfuric acid, also contains 8～4% organic matter and moisture content, this spent acid is the colloidal liquid that a kind of viscosity is large, its color and luster is dark red, and character is unstable, gives out particularity stink, be difficult to process, very serious to ecological environmental pollution.Acid-restoring plant is as the allied industry gasifying device of current unique processing waste sulfuric acid from alkylation, and whether it can run well directly affects alkyl plant on-stream time.
The furnace gas temperature higher (the highest 80 ℃ of left and right) of acid-restoring plant purification section dynamic wave outlet at present, close to the SC service ceiling of using pipeline glass steel material, if the device amount of carrying processing, temperature also can raise, the processing capacity that has limited device, is unfavorable for the safe operation of device long period, and temperature rising can have a strong impact on back segment operation electricity except fog effect, cause electrostatic precipitator outlet acid mist, arsenic, fluorine content overproof, thereby affect conversion ratio and the service life of reforming catalyst.Current measure is at stuffing washing tower, to establish plate type heat exchanger to carry out cooling, for maintenance system balance, by water compensating valve, in system, supplement a large amount of moisture (dynamic wave scrubber, stuffing washing tower two places moisturizing), waste water resource so not only, also can increase diluted acid amount, increase load and the cost of sewage disposal.
For another heavy constituent content of organics in fruit spent acid raw material, before more or purification section, the operation of cracking workshop section is unstable; can make to produce in cracking furnace gas particle ash content or sublimed sulfur; cause dynamic wave circulating cooling liquid to contain solid particle; time has been grown and can stop up one, two sections of shower nozzles of dynamic wave exchange column, affects dynamic wave exchange column cooling-down effect.
In new patent searching, do not find the higher patent documentation of similar solution acid-restoring plant purification section dynamic wave outlet furnace gas temperature.
Summary of the invention
The object of the invention is existing acid-restoring plant purification section technique and system to transform, solve the problem that acid-restoring plant purification section dynamic wave outlet furnace gas temperature is higher, dynamic wave circulating cooling liquid contains the frequent obstruction of solid particle.
The present invention increases a set of circulation temperature lowering system at purification section dynamic wave scrubber outlet at bottom, and two groups of filtration facilities setting up and connect, can realize online disassembly, cleaning, by technical scheme, implement, can improve unit capacity, meet electrostatic precipitator operation requirements, improve conversion ratio and the service life of catalyst, and can reduce dilute acid pretreatment amount, reduce load and the cost of sewage disposal.
The following technical scheme of the concrete employing of the present invention:
A kind of system that solves acid-restoring plant dynamic wave furnace gas temperature superelevation, comprise and adopt pipeline-connected dynamic wave gas-liquid separator, stuffing washing tower and electrostatic precipitator, it is characterized in that, furnace gas (approximately 400 ℃ of temperature) first enters dynamic wave exchange column, on dynamic wave exchange column, connect one or more reverse jet tubes, shower nozzle control valve is all set on each reverse jet tube, control reverse jet tube pressure, preferably, on dynamic wave exchange column, connect two reverse jet tubes, one section of shower nozzle control valve, two sections of shower nozzles are set respectively on two reverse jet tubes; Reverse jet tube is connected with dynamic wave gas-liquid separator by dynamic wave thin acid pump, and furnace gas enters dynamic wave gas-liquid separator and carries out gas-liquid separation, and in furnace gas, the impurity such as most dust is removed.Furnace gas after adiabatic humidification enter stuffing washing tower wash, cooling, further remove moisture in furnace gas, furnace gas temperature is down to below 40 ℃, enters electrostatic precipitator, removes remaining acid mist, makes acid mist <0.005g/m in furnace gas
3, arsenic <1.0mg/m
3, fluorine <3.0mg/m
3, finally enter follow-up conversion section.
Wherein, dynamic wave vapour liquid separator bottom is extracted washing diluted acid (80 ℃ of temperature) out, first enter the strainer valve group of two groups of parallel connections, enter again dynamic wave cyclic acid pump, after supercharging, enter dynamic wave plate type heat exchanger, dynamic wave plate type heat exchanger adopts circulating water, returns at the bottom of dynamic wave gas-liquid separator tower on liquid level after cooling, cooling, preferably on liquid level 10 ?20cm place, through cooling, cooling after diluted acid temperature be about 65 ℃.
Wherein, clear water head tank is set above dynamic wave scrubber, clear water head tank is connected with dynamic wave exchange column overflow segment by pipeline, check valve, overflow segment control valve and accident water power brake control valve are set, accident water power brake control valve and dynamic wave thin acid pump outlet pressure, dynamic wave gas-liquid separator outlet temperature interlocking on pipeline.
Described stuffing washing tower bottom cycle bonding pad tower thin acid pump, the board-like heat exchanger of packed tower, padding washing tower bottom is also connected with water compensating valve.Furnace gas (approximately 68 ℃) after dynamic wave exchange column, the comprehensive cooling of dynamic wave plate type heat exchanger, enter stuffing washing tower, and by stuffing washing tower bottom filling tower thin acid pump, the board-like heat exchanger of packed tower, the unnecessary heat of residue is removed, furnace gas temperature is down to below 40 ℃, the board-like heat exchanger of packed tower adopts circulating water, for safeguarding balance, the water compensating valve connecting by dynamic wave vapour liquid separator bottom supplements a small amount of moisture in system.
Aborning, consider because having a power failure and cause high-temperature furnace gas to affect cleaning equipment suddenly, accident emergency water automatic spraying device is set in design, above dynamic wave scrubber, be provided with clear water head tank, by dynamic wave gas-liquid separator outlet air temperature and clear water head tank accident water power brake control valve, interlock to protect upstream device and pipeline, while clear water head tank accident water power brake control valve and dynamic wave thin acid pump outlet pressure, dynamic wave gas-liquid separator outlet temperature interlocking, when dynamic wave thin acid pump surpasses set point of temperature because of disorderly closedown or pressure head deficiency or the outlet of dynamic wave gas-liquid separator, automatically open head tank accident water power brake control valve and maintain not overtemperature of dynamic wave exchange column.
Overflow segment control valve, check valve are set, and are stablize and guarantee that diluted acid does not seal in clear water head tank for the ease of controlling one, two section of sprinkler pressure.
Wherein, described dynamic wave scrubber, stuffing washing tower circulation diluted acid plate type heat exchanger, sheet structure is detachable, for the ease of the impurity in maintenance, cleaning plate, plate material is SMO254.
The strainer valve group that is entered two groups of parallel connections by dynamic wave vapour liquid separator bottom diluted acid described above, two groups can switch mutually, standby, realize on-line cleaning.
Dynamic wave cyclic acid pump described above adopts VFC, by frequency conversion, comes the rotating speed of control pump and flow to interlock with dynamic wave scrubber outlet furnace gas temperature, realizes automatically and controlling, saving energy consumption.
Purification section diluted acid pipe material described above is selected carbon steel inner liner polytetrafluoroethylene or FRPP.
Compared with prior art, the present invention has following beneficial effect: 1) reduce dynamic wave scrubber furnace gas export temperature, be conducive to the safe operation of device long period.2) improve device disposal ability.3) reduce electrostatic precipitator inlet temperature, improve electricity except fog effect, improve conversion ratio and the service life of catalyst.4) can reduce dilute acid pretreatment amount, reduce load and the cost of sewage disposal.5) solve dynamic wave circulating cooling liquid and contain the often problem of one, two section of shower nozzle of obstruction of solid particle, and can realize online disassembly, cleaning.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention schematic flow sheet;
In figure, 1 is that dynamic wave gas-liquid separator, 2 is that dynamic wave exchange column, 3 is that dynamic wave thin acid pump, 4 is that one section of shower nozzle control valve, 5 is that two sections of shower nozzle control valves, 6 are that overflow segment control valve, 7 is that clear water head tank, 8 is that accident water power brake control valve, 9 is that check valve, 10 is that stuffing washing tower, 11 is that packed tower thin acid pump, 12 is that the board-like heat exchanger of packed tower, 13 is that electrostatic precipitator, 14 is that water compensating valve, 15 is that dynamic wave cyclic acid pump, 16 is that strainer valve group, 17 is that dynamic wave plate type heat exchanger, 18 is reverse jet tube.
The specific embodiment
As shown in Figure 1, enter the furnace gas of purification section, approximately 400 ℃ of temperature, first enter dynamic wave exchange column 2, diluted acid pressurizes by dynamic wave thin acid pump 3 and is stabilized in after certain pressure head and contacted with high-temperature furnace gas by reverse jet tube 18 spray diluted acids, reverse jet tube pressure is controlled by one section of shower nozzle control valve 4, two sections of shower nozzle control valves 5, moisture in diluted acid is evaporated rapidly, furnace gas temperature also decreases (adiabatic humidification process) simultaneously, furnace gas enters dynamic wave gas-liquid separator 1 and carries out gas-liquid separation, and in furnace gas, the impurity such as most dust is removed.Furnace gas after adiabatic humidification enter stuffing washing tower 10 wash, cooling, further remove moisture in furnace gas, furnace gas temperature is down to below 40 ℃, enters electrostatic precipitator 13, removes remaining acid mist, finally enters follow-up conversion section.
By dynamic wave vapour liquid separator 1 bottom, extract washing diluted acid (approximately 80 ℃ of temperature) out, first enter the strainer valve group 16 of two groups of parallel connections, enter again dynamic wave cyclic acid pump 15, after supercharging, enter dynamic wave plate type heat exchanger 17, dynamic wave plate type heat exchanger 17 adopts circulating water, after cooling, cooling, return at the bottom of dynamic wave gas-liquid separator 1 tower on liquid level 10 ?20cm place, through diluted acid temperature cooling, after lowering the temperature, be about 65 ℃.
Furnace gas (approximately 68 ℃) after dynamic wave exchange column 2, the comprehensive cooling of dynamic wave plate type heat exchanger 17, enter stuffing washing tower 10, and by stuffing washing tower 10 bottom filling tower thin acid pumps 11, the board-like heat exchanger 12 of packed tower, the unnecessary heat of residue is removed, make furnace gas temperature be down to 38 ℃ of left and right, the board-like heat exchanger 12 of packed tower adopts circulating water, for safeguarding balance, by water compensating valve 14, in system, supplement a small amount of moisture.
Clear water head tank 7 is set above dynamic wave scrubber; clear water head tank 7 is connected with dynamic wave exchange column 2 overflow segment by pipeline; two check valves 9 and accident water power brake control valve 8 are set on pipeline; accident water power brake control valve 8 and dynamic wave thin acid pump 3 outlet pressures, dynamic wave gas-liquid separator 1 outlet temperature interlocking; when dynamic wave thin acid pump 3 surpasses set point of temperature because of disorderly closedown or pressure head deficiency or the outlet of dynamic wave gas-liquid separator, automatically open head tank 7 accident water power brake control valves 8 and maintain not overtemperature of dynamic wave exchange column.
Claims (8)
1. a system that solves acid-restoring plant dynamic wave furnace gas temperature superelevation, comprise and adopt pipeline-connected dynamic wave gas-liquid separator, stuffing washing tower and electrostatic precipitator, it is characterized in that, first furnace gas enters dynamic wave exchange column, on dynamic wave exchange column, connect one or more reverse jet tubes, shower nozzle control valve is all set on each reverse jet tube, control reverse jet tube pressure, reverse jet tube is connected with dynamic wave gas-liquid separator by dynamic wave thin acid pump, furnace gas enters dynamic wave gas-liquid separator and carries out gas-liquid separation, then furnace gas enters stuffing washing tower and washs, cooling, finally enter electrostatic precipitator, remove remaining acid mist.
2. the system of solution acid-restoring plant dynamic wave furnace gas temperature superelevation according to claim 1, is characterized in that, two reverse jet tubes are set, and on two reverse jet tubes, one section of shower nozzle control valve is set respectively, two sections of shower nozzle control valves.
3. the system of solution acid-restoring plant dynamic wave furnace gas temperature superelevation according to claim 1, is characterized in that, goes out acid mist <0.005g/m in the furnace gas after electrostatic precipitator
3, arsenic <1.0mg/m
3, fluorine <3.0mg/m
3.
4. the system of solution acid-restoring plant dynamic wave furnace gas temperature superelevation according to claim 2, it is characterized in that dynamic wave vapour liquid separator bottom extraction washing diluted acid, first enter the strainer valve group of two groups of parallel connections, enter again dynamic wave cyclic acid pump, after supercharging, enter dynamic wave plate type heat exchanger, through cooling, after cooling, diluted acid returns at the bottom of dynamic wave gas-liquid separator tower on liquid level, through cooling, diluted acid temperature after cooling is about 65 ℃, described dynamic wave cyclic acid pump adopts VFC, by frequency conversion, come the rotating speed of control pump and flow and dynamic wave scrubber outlet furnace gas temperature to interlock.
5. the system of solution acid-restoring plant dynamic wave furnace gas temperature superelevation according to claim 4, is characterized in that, described stuffing washing tower bottom cycle bonding pad tower thin acid pump, the board-like heat exchanger of packed tower.
6. the system of solution acid-restoring plant dynamic wave furnace gas temperature superelevation according to claim 1, it is characterized in that, clear water head tank is set above dynamic wave scrubber, clear water head tank is connected with dynamic wave exchange column overflow segment by pipeline, check valve, overflow segment control valve and accident water power brake control valve are set, accident water power brake control valve and dynamic wave thin acid pump interlocking on pipeline.
7. the system of solution acid-restoring plant dynamic wave furnace gas temperature superelevation according to claim 1, is characterized in that, described dynamic wave scrubber, stuffing washing tower circulation diluted acid plate type heat exchanger, and sheet structure is detachable, plate material is SMO254.
8. according to the system of the solution acid-restoring plant dynamic wave furnace gas temperature superelevation described in claim 2,4 or 6, it is characterized in that, diluted acid pipe material is selected carbon steel lining teflon or FRPP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200389.4A CN103961966B (en) | 2014-05-13 | 2014-05-13 | A kind of system that solves acid-restoring plant dynamic wave furnace gas temperature superelevation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200389.4A CN103961966B (en) | 2014-05-13 | 2014-05-13 | A kind of system that solves acid-restoring plant dynamic wave furnace gas temperature superelevation |
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| CN103961966A true CN103961966A (en) | 2014-08-06 |
| CN103961966B CN103961966B (en) | 2016-05-11 |
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| CN201410200389.4A Expired - Fee Related CN103961966B (en) | 2014-05-13 | 2014-05-13 | A kind of system that solves acid-restoring plant dynamic wave furnace gas temperature superelevation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590764A (en) * | 2017-01-23 | 2017-04-26 | 中冶焦耐(大连)工程技术有限公司 | Coke oven gas cooling apparatus and process |
| CN107998827A (en) * | 2017-12-22 | 2018-05-08 | 江苏天楹环保能源成套设备有限公司 | A kind of high temperature gas containing acid fume hydrogen chloride recovery system |
Citations (3)
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| CN1446616A (en) * | 2002-03-23 | 2003-10-08 | 南昌有色冶金设计研究院 | Kinetic wave equip for purifying smelting fumes |
| CN2887419Y (en) * | 2006-01-24 | 2007-04-11 | 林建平 | Combined type waste gas treatment tower |
| CN201287025Y (en) * | 2008-09-03 | 2009-08-12 | 金隆铜业有限公司 | Kinetic wave fume cleaning and purifying device |
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2014
- 2014-05-13 CN CN201410200389.4A patent/CN103961966B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446616A (en) * | 2002-03-23 | 2003-10-08 | 南昌有色冶金设计研究院 | Kinetic wave equip for purifying smelting fumes |
| CN2887419Y (en) * | 2006-01-24 | 2007-04-11 | 林建平 | Combined type waste gas treatment tower |
| CN201287025Y (en) * | 2008-09-03 | 2009-08-12 | 金隆铜业有限公司 | Kinetic wave fume cleaning and purifying device |
Non-Patent Citations (1)
| Title |
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| 李小峰 冯建彬: "华兴公司三期200kt/a硫酸装置工艺简介及运行情况", 《硫酸工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590764A (en) * | 2017-01-23 | 2017-04-26 | 中冶焦耐(大连)工程技术有限公司 | Coke oven gas cooling apparatus and process |
| CN107998827A (en) * | 2017-12-22 | 2018-05-08 | 江苏天楹环保能源成套设备有限公司 | A kind of high temperature gas containing acid fume hydrogen chloride recovery system |
| CN107998827B (en) * | 2017-12-22 | 2019-11-01 | 江苏天楹环保能源成套设备有限公司 | A kind of high temperature gas containing acid fume hydrogen chloride recovery system |
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| CN103961966B (en) | 2016-05-11 |
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Granted publication date: 20160511 Termination date: 20210513 |