CN104498071A - Heating method of heat storage intermittent heating furnace during oil shale retort oil refining - Google Patents
Heating method of heat storage intermittent heating furnace during oil shale retort oil refining Download PDFInfo
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- CN104498071A CN104498071A CN201410844792.0A CN201410844792A CN104498071A CN 104498071 A CN104498071 A CN 104498071A CN 201410844792 A CN201410844792 A CN 201410844792A CN 104498071 A CN104498071 A CN 104498071A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/06—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of oil shale and/or or bituminous rocks
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a heating method of a heat storage intermittent reheating furnace during oil shale retort oil refining. During the oil shale retort oil refining, cycling gas heated by four heat storage intermittent heating furnaces serves as a gas heat carrier and is fed into a gas retort so as to perform alternate heat supply to the gas retort, wherein lattice bricks in a heat storage chamber of the heating furnace are heated by using two heating furnaces; the cycling gas is introduced into another two heating furnaces, the gas and the lattice bricks in the heat storage chamber are introduced into the gas retort so as to form a heat cycle, the cycling gas is heated by the heating furnaces and is introduced into the gas retort to be subjected to alternate heat cycle switching, and the heat cycle is switched every two hours. The method has the advantages that the heat supply is stable, the service life is long, the heat value of the gas generated by the gas retort is high, and the condition that the heating furnaces are difficult to ignite is avoided.
Description
Technical field
The present invention relates to the heating means of accumulation of heat intermittent-heating stove in a kind of oil shale retorting oil refining.
Background technology
In oil shale retorting oil refining, process furnace is crucial Thermal Equipment, it is device oil shale retorting oil refining circulation carbonization gas being carried out to second-heating, recuperative heater is the process furnace in the transformation of blast furnace in metallurgical industry hotblast stove structure formation, be widely used in metallurgical system, what metallurgy industry heated is air, and the heating of oil shale retorting oil refining factory is gas, gas is flammable explosive gas, has certain danger.Origin of heat needed for current resinous shale factory gas retort has two portions, a part is the heat smoke that gas retort gasification, and combustion section produces, some heats metacyclic circulating mash gas by recuperative heater, the heat smoke that wherein gas retort gasification section produces accounts for about 70% of total heat needed for destructive distillation, the circulating mash gas of all the other 30% dependence recuperative heaters provides, the circulating mash gas of process furnace is said gas retort, is a kind of supplementing, and the temperature of circulating mash gas is change and fluctuation.Circulating mash gas heat supply generally adopts single stove heat-supplying mode, reaches the object providing thermal cycling gas to gas retort.But it is large that single stove heat supply exists the heat supply temperature difference, cause gas retort retorted shale incomplete, decrease oil yield, refractory materials in stove and some auxiliary facilitys are had a negative impact, shorten process furnace work-ing life, and the temperature of reheating furnace is low, easily causes ignition difficulties; Because the process furnace high/low temperature temperature difference causes greatly gas retort fire bed to run steadily, make the generation gas calorific value of gas retort low.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of for thermally-stabilised, and long service life, the generation gas calorific value of gas retort is good, avoids the heating means of accumulation of heat intermittent-heating stove in the oil shale retorting oil refining of process furnace ignition difficulties.
Technical solution of the present invention is:
Heating means for accumulation of heat intermittent-heating stove in oil shale retorting oil refining, its concrete steps are:
In oil shale retorting oil refining, use the circulating mash gas of four accumulation of heat intermittent-heating stove heating to be fed in gas retort as gaseous heat-carrier and alternately heating is carried out to gas retort, wherein, two process furnace are to checker brick heating in regenerator in process furnace, another two process furnace lead to checker brick in circulating mash gas and regenerator and pass in gas retort and carry out thermal cycling, process furnace is to circulating mash gas heating and pass in gas retort and carry out thermal cycling and alternately switch, and every two hours switches once;
Checker brick in the regenerator of process furnace I are heated to 750 DEG C ~ 800 DEG C, heat-up time is 2h, stops heating, continues to pass into circulating mash gas and checker brick heat exchange to process furnace I and makes the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace I, checker brick in the regenerator of process furnace II are heated to 850 DEG C ~ 800 DEG C, heat-up time is 2h, stop heating, continue to pass into circulating mash gas and checker brick heat exchange to process furnace II and make the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace II, checker brick in the regenerator of process furnace III are heated to 750 DEG C ~ 800 DEG C, heat-up time is 2h, stop heating, continue to pass into circulating mash gas and checker brick heat exchange to process furnace III and make the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace III, checker brick in the regenerator of process furnace IV are heated to 750 DEG C ~ 800 DEG C, heat-up time is 2h, stop heating, continue to pass into circulating mash gas and checker brick heat exchange to process furnace IV and make the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h.
Gas type of heating in described process furnace first to burn in gas and combustion air feeding accumulation of heat intermittent-heating stove, combustion chambers burn is sent into by burner, chamber temperature is made to reach 900 DEG C ~ 1100 DEG C, checker brick, by regenerator, with checker brick generation heat exchange in regenerator, heat by the heat smoke that burning produces, after 2h, cut off burning gas and combustion air supply, stop stove combustion, then pass into circulating mash gas.
The temperature that passes into of the circulating mash gas of described process furnace is 70 DEG C ~ 80 DEG C.
Beneficial effect of the present invention:
(1), middle temperature is more constant, and high/low temperature has a narrow range of temperature.
Because the process furnace of logical circulation becomes two from one, under the prerequisite that circulating mash gas flow is identical, the heat exchange while that the regenerator entering two process furnace respectively being carried out, the temperature difference reduces naturally.
(2), process furnace work-ing life is extended.
Two burn the two heat-supplying mode heating furnace high-temperature general controls sent at 700 DEG C ~ 720 DEG C, middle temperature general control lives 680 DEG C ~ 700 DEG C, the temperature difference is at 50 DEG C ~ 80 DEG C, and high temperature reduces by 30 DEG C ~ 50 DEG C compared with single stove heat supply, effectively extends the work-ing life of process furnace major equipment.
(3), effective raising gas calorific value.
The circulating temperature of relative constancy allows gas retort fire bed run more steadily, and gas calorific value is higher.
(4), process furnace igniting easily.
The process furnace improved reason of this situation of lighting a fire is caused to have 2 points.First be due to occur gas calorific value send heat with single stove compared with increase.Next is because two kinds of heat-supplying modes are compared, and the temperature of the heat-supplying mode reheating furnace that two burnings two are sent is higher, and igniting is more prone to.
Embodiment
Embodiment 1
In oil shale retorting oil refining, use the circulating mash gas of four accumulation of heat intermittent-heating stove heating to be fed in gas retort as gaseous heat-carrier and alternately heating is carried out to gas retort, wherein, two process furnace are to checker brick heating in regenerator in process furnace, another two process furnace lead to checker brick in circulating mash gas and regenerator and pass in gas retort and carry out thermal cycling, process furnace is to circulating mash gas heating and pass in gas retort and carry out thermal cycling and alternately switch, and every two hours switches once;
Gas type of heating in process furnace first to burn in gas and combustion air feeding accumulation of heat intermittent-heating stove, combustion chambers burn is sent into by burner, chamber temperature is made to reach 900 DEG C, checker brick, by regenerator, with checker brick generation heat exchange in regenerator, heat by the heat smoke that burning produces, after 2h, cut off burning gas and combustion air supply, stop stove combustion, then passing into temperature is 70 DEG C of circulating mash gas;
Checker brick in the regenerator of process furnace I are heated to 800 DEG C, heat-up time is 2h, stops heating, continues to pass into process furnace I heating temperatures to 720 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace I, checker brick in the regenerator of process furnace II are heated to 800 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace II heating temperatures to 720 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace II, checker brick in the regenerator of process furnace III are heated to 800 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace III heating temperatures to 720 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace III, checker brick in the regenerator of process furnace IV are heated to 800 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace IV heating temperatures to 720 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h.
Embodiment 2
In oil shale retorting oil refining, use the circulating mash gas of four accumulation of heat intermittent-heating stove heating to be fed in gas retort as gaseous heat-carrier and alternately heating is carried out to gas retort, wherein, two process furnace are to checker brick heating in regenerator in process furnace, another two process furnace lead to checker brick in circulating mash gas and regenerator and pass in gas retort and carry out thermal cycling, process furnace is to circulating mash gas heating and pass in gas retort and carry out thermal cycling and alternately switch, and every two hours switches once;
Gas type of heating in process furnace first to burn in gas and combustion air feeding accumulation of heat intermittent-heating stove, combustion chambers burn is sent into by burner, chamber temperature is made to reach 1100 DEG C, checker brick, by regenerator, with checker brick generation heat exchange in regenerator, heat by the heat smoke that burning produces, after 2h, cut off burning gas and combustion air supply, stop stove combustion, then passing into temperature is 80 DEG C of circulating mash gas;
Checker brick in the regenerator of process furnace I are heated to 750 DEG C, heat-up time is 2h, stops heating, continues to pass into process furnace I heating temperatures to 700 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace I, checker brick in the regenerator of process furnace II are heated to 750 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace II heating temperatures to 700 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace II, checker brick in the regenerator of process furnace III are heated to 750 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace III heating temperatures to 700 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace III, checker brick in the regenerator of process furnace IV are heated to 750 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace IV heating temperatures to 700 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h.
Embodiment 3
In oil shale retorting oil refining, use the circulating mash gas of four accumulation of heat intermittent-heating stove heating to be fed in gas retort as gaseous heat-carrier and alternately heating is carried out to gas retort, wherein, two process furnace are to checker brick heating in regenerator in process furnace, another two process furnace lead to checker brick in circulating mash gas and regenerator and pass in gas retort and carry out thermal cycling, process furnace is to circulating mash gas heating and pass in gas retort and carry out thermal cycling and alternately switch, and every two hours switches once;
Gas type of heating in process furnace first to burn in gas and combustion air feeding accumulation of heat intermittent-heating stove, combustion chambers burn is sent into by burner, chamber temperature is made to reach 1000 DEG C, checker brick, by regenerator, with checker brick generation heat exchange in regenerator, heat by the heat smoke that burning produces, after 2h, cut off burning gas and combustion air supply, stop stove combustion, then passing into temperature is 75 DEG C of circulating mash gas;
Checker brick in the regenerator of process furnace I are heated to 780 DEG C, heat-up time is 2h, stops heating, continues to pass into process furnace I heating temperatures to 710 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace I, checker brick in the regenerator of process furnace II are heated to 780 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace II heating temperatures to 710 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace II, checker brick in the regenerator of process furnace III are heated to 780 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace III heating temperatures to 710 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace III, checker brick in the regenerator of process furnace IV are heated to 780 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace IV heating temperatures to 710 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 2h.
Comparative example 1
In oil shale retorting oil refining, use the circulating mash gas of three accumulation of heat intermittent-heating stove heating to be fed in gas retort as gaseous heat-carrier and alternately heating is carried out to gas retort, wherein, a process furnace is to checker brick heating in regenerator in process furnace, another two process furnace lead to checker brick in circulating mash gas and regenerator and pass in gas retort and carry out heat and follow, process furnace is to circulating mash gas heating and pass in gas retort and carry out thermal cycling and alternately switch, and process furnace carries out thermal cycling 1h to switching to pass in gas retort after circulating mash gas heating 2h;
Gas type of heating in process furnace first to burn in gas and combustion air feeding accumulation of heat intermittent-heating stove, combustion chambers burn is sent into by burner, chamber temperature is made to reach 900 DEG C ~ 1100 DEG C, checker brick, by regenerator, with checker brick generation heat exchange in regenerator, heat by the heat smoke that burning produces, after 2h, cut off burning gas and combustion air supply, stop stove combustion, then passing into temperature is 70 DEG C ~ 80 DEG C circulating mash gas;
Checker brick in the regenerator of process furnace I are heated to 800 DEG C, heat-up time is 2h, stops heating, continues to pass into process furnace I heating temperatures to 780 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 1h; After checker brick heating 1h in the regenerator of process furnace I, checker brick in the regenerator of process furnace II are heated to 800 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace II heating temperatures to 780 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 1h; After checker brick heating 1h in the regenerator of process furnace II, checker brick in the regenerator of process furnace III are heated to 800 DEG C, heat-up time is 2h, stop heating, continue to pass into process furnace III heating temperatures to 780 DEG C that circulating mash gas and checker brick heat exchange make circulating mash gas, and passing into thermal cycling in gas retort, thermal cycle times is 1h.
The embodiment of the present invention 1 and comparative example 1 pass into the high temperature in gas retort, middle gentle low-temperature heat circulating mash gas detected result as shown in table 1:
Table 1
| Comparing result | High temperature | Middle temperature | Low temperature | The temperature difference |
| Comparative example 1 | 780℃±10℃ | 650℃±10℃ | 500℃±10℃ | 260℃～300℃ |
| Embodiment 1 | 700℃～720℃ | 680℃～700℃ | 650℃～670℃ | 50℃～70℃ |
Claims (3)
1. the heating means of accumulation of heat intermittent-heating stove in oil shale retorting oil refining, is characterized in that: concrete steps are:
In oil shale retorting oil refining, use the circulating mash gas of four accumulation of heat intermittent-heating stove heating to be fed in gas retort as gaseous heat-carrier and alternately heating is carried out to gas retort, wherein, two process furnace are to checker brick heating in regenerator in process furnace, another two process furnace lead to checker brick in circulating mash gas and regenerator and pass in gas retort and carry out thermal cycling, process furnace is to circulating mash gas heating and pass in gas retort and carry out thermal cycling and alternately switch, and every two hours switches once;
Checker brick in the regenerator of process furnace I are heated to 750 DEG C ~ 800 DEG C, heat-up time is 2h, stops heating, continues to pass into circulating mash gas and checker brick heat exchange to process furnace I and makes the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace I, checker brick in the regenerator of process furnace II are heated to 850 DEG C ~ 800 DEG C, heat-up time is 2h, stop heating, continue to pass into circulating mash gas and checker brick heat exchange to process furnace II and make the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace II, checker brick in the regenerator of process furnace III are heated to 750 DEG C ~ 800 DEG C, heat-up time is 2h, stop heating, continue to pass into circulating mash gas and checker brick heat exchange to process furnace III and make the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h; After checker brick heating 1h in the regenerator of process furnace III, checker brick in the regenerator of process furnace IV are heated to 750 DEG C ~ 800 DEG C, heat-up time is 2h, stop heating, continue to pass into circulating mash gas and checker brick heat exchange to process furnace IV and make the heating temperatures to 700 DEG C of circulating mash gas ~ 720 DEG C, and passing into thermal cycling in gas retort, thermal cycle times is 2h.
2. the heating means of accumulation of heat intermittent-heating stove in oil shale retorting oil refining according to claim 1, it is characterized in that: the gas type of heating in described process furnace first to burn in gas and combustion air feeding accumulation of heat intermittent-heating stove, combustion chambers burn is sent into by burner, chamber temperature is made to reach 900 DEG C ~ 1100 DEG C, the heat smoke that burning produces passes through regenerator, with checker brick generation heat exchange in regenerator, checker brick are heated, after 2h, cut off burning gas and combustion air supply, stop stove combustion, then pass into circulating mash gas.
3. the heating means of accumulation of heat intermittent-heating stove in oil shale retorting oil refining according to claim 1, is characterized in that: the temperature that passes into of the circulating mash gas of described process furnace is 70 DEG C ~ 80 DEG C.
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| CN201410844792.0A CN104498071B (en) | 2014-12-31 | 2014-12-31 | The heating means of accumulation of heat intermittent-heating stove in oil shale retorting oil refining |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863760A (en) * | 2016-04-25 | 2016-08-17 | 浙江大学 | Heat accumulation type waste heat generating system and method based on intermittent high-temperature smoke |
| CN107723006A (en) * | 2017-11-20 | 2018-02-23 | 辽宁成大股份有限公司 | A kind of heater and technique of long flame dry distillation of coal complete alternation gas |
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| US4425220A (en) * | 1982-02-08 | 1984-01-10 | Dravo Corporation | Method of and apparatus for processing of oil shale |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863760A (en) * | 2016-04-25 | 2016-08-17 | 浙江大学 | Heat accumulation type waste heat generating system and method based on intermittent high-temperature smoke |
| CN107723006A (en) * | 2017-11-20 | 2018-02-23 | 辽宁成大股份有限公司 | A kind of heater and technique of long flame dry distillation of coal complete alternation gas |
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| CN104498071B (en) | 2016-08-17 |
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