CN103541780A - Petrochemical industry mid-span device heat integrated low temperature heat recovery system and recovery method - Google Patents
Petrochemical industry mid-span device heat integrated low temperature heat recovery system and recovery method Download PDFInfo
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- CN103541780A CN103541780A CN201310500045.0A CN201310500045A CN103541780A CN 103541780 A CN103541780 A CN 103541780A CN 201310500045 A CN201310500045 A CN 201310500045A CN 103541780 A CN103541780 A CN 103541780A
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Abstract
The invention discloses a petrochemical industry mid-span device heat integrated low temperature heat recovery system and recovery method. The petrochemical industry mid-span device heat integrated low temperature heat recovery system comprises a low pressure heat exchanger, a water inlet manifold, a water return manifold, a diesel heat exchanger and a kerosene heat exchanger. An water inlet of the low pressure heat exchanger is connected with a condensate water pipeline of a turbine, an water outlet of the low pressure heat exchanger is connected with a deaerator, water after being performed heat exchange of the low pressure heat exchanger enters the deaerator, an water outlet end of the water inlet manifold separates into two ways, one way of the water outlet end is communicated with an water inlet of a diesel heat exchanger tube pass via a water inlet pipeline of the diesel heat exchanger, the other way of the water outlet end is communicated with water inlet of a kerosene heat exchanger tube pass via a water inlet pipeline of the kerosene heat exchanger, and a water outlet pipeline of the diesel heat exchanger is integrated with a water outlet pipeline of the kerosene heat exchanger into a water inlet end of the water return manifold. Low-temperature condensate water and treated water are utilized to recover heat of high-temperature purified diesel and purified kerosene in oil refining equipment. The invention discloses a recovery method of the system.
Description
Technical field
The present invention relates to heat recovery system and recovery method in petrochemical industry, specifically refer to that in petrochemical industry, heat integration low-temperature heat recovery system and recovery method are put in straddle mounting.
Background technique
At present, heat recovery technology can carry out recycling to a large amount of waste heats discharged to the external world in device running by certain mode, but conventionally only applies to same device and the same or analogous medium of heat transferring medium employing character.As thermoelectricity plant, condense and steam heat-exchanging, application area and energy-saving potential are limited.
In prior art, the equipment component figure of thermoelectricity plant as shown in Figure 1, comprise steam turbine condensed water heat transmission equipment and oxygen-eliminating device 106, steam turbine condensed water heat transmission equipment comprises condensate line 101, low pressure heat exchanger 103, the second low pressure heat exchanger 104, the 3rd low pressure heat exchanger 105, condensed water modulating valve 102 is installed on condensate line 101, three heat exchangers are the setting of series connection shape, three heat exchangers all have intake pipe and outlet pipe, the intake pipe of low pressure heat exchanger 103 is connected with the condensate line of steam turbine 101, the condensed water receiving from steam turbine by condensate line 101, the outlet pipe of the 3rd low pressure heat exchanger 105 is connected with oxygen-eliminating device 106, by the water after three heat exchanger heat exchange, enter in oxygen-eliminating device 106, the high temperature heat source of heat exchanger is from the steam of thermal power plant boiler.Existing steam turbine condensed water heat transmission equipment, as the temperature of condensed water brought up to 120 ℃ of left and right, need to be selected three heat exchangers, need to consume a large amount of steam.
Meanwhile, in the oil refining apparatus in petrochemical industry, refined diesel oil and kerosene raffinate side oil temperature are higher, need to reduce oil temperature and make it reach technological requirement.At present, reduce oil temperature and mainly adopt air-cooled or water cooling equipment, need to consume a large amount of power consumptions and water consumption.If have a kind of across apparatus system, the heat of refined diesel oil in oil refining apparatus and kerosene raffinate can be supplied with to steam turbine condensed water heat transmission equipment, can reach the object that reduces refined diesel oil and kerosene raffinate oil temperature, improve the water temperature of condensed water in steam turbine condensed water heat transmission equipment simultaneously, reach the win-win object of killing two birds with one stone, science environmental protection again simultaneously.
Summary of the invention
One of object of the present invention is to provide straddle mounting in a kind of petrochemical industry and puts heat integration low-temperature heat recovery system, this system is both the water temperature that improves steam turbine condensed water, can reduce again the oil temperature of refined diesel oil and kerosene raffinate in oil refining apparatus simultaneously, reach technological requirement, reduce the power consumption and the water consumption that reduce oil temperature, promote straddle mounting and put economic benefit and technical order, realize the object of win-win.
Above-mentioned purpose of the present invention realizes by the following technical solutions: in petrochemical industry, heat integration low-temperature heat recovery system is put in straddle mounting, it is characterized in that: this system comprises low pressure heat exchanger, water inlet manifold, return main, diesel oil heat exchanger and kerosene heat exchanger, diesel oil heat exchanger and kerosene heat exchanger are shell-and-tube heat exchanger, described low pressure heat exchanger has intake pipe and outlet pipe, the intake pipe of low pressure heat exchanger is connected with the condensate line of steam turbine, by condensate line, receive the condensed water from steam turbine, the outlet pipe of low pressure heat exchanger is connected with oxygen-eliminating device, by the water after the heat exchange of low pressure heat exchanger, enter in oxygen-eliminating device, the intake pipe collateral branch one road water inlet pipe of described low pressure heat exchanger, this water inlet pipe is connected with the feed-water end of described water inlet manifold, the feed-water end of described water inlet manifold is also connected with demineralized water pipeline simultaneously, to receive demineralized water, the waterexit end of described water inlet manifold is divided into two-way, the diesel oil heat exchanger inlet pipeline of leading up to is connected with the intake pipe of diesel oil heat exchanger tube pass, the outlet pipe of diesel oil heat exchanger tube pass is connected with diesel oil heat exchanger rising pipe, the filler opening of diesel oil heat exchanger shell pass and oil outlet are respectively used to be connected with the pipeline of refined diesel oil in oil refining apparatus, the kerosene heat exchanger inlet pipeline of separately leading up to is connected with the intake pipe of kerosene heat exchanger tube pass, the outlet pipe of kerosene heat exchanger tube pass is connected with kerosene heat exchanger rising pipe, the filler opening of kerosene heat exchanger shell pass and oil outlet are respectively used to be connected with the pipeline of kerosene raffinate in oil refining apparatus, described diesel oil heat exchanger rising pipe and kerosene heat exchanger rising pipe intersect at described return main's feed-water end, return main's waterexit end is connected with return branch, described return branch is connected with the outlet pipe of low pressure heat exchanger with collateral branch's Placement, the condensed water and the demineralized water that enter water inlet manifold finally flow in oxygen-eliminating device through return main again after diesel oil heat exchanger and the heat exchange of kerosene heat exchanger, utilize condensed water and the demineralized water of lower temperature to reclaim the refined diesel oil of higher temperature and the heat of kerosene raffinate in oil refining apparatus, in assurance oil refining apparatus, the oil temperature of refined diesel oil and kerosene raffinate reaches technological requirement, the heat of absorption is sent in oxygen-eliminating device simultaneously, to reach the object that the low-temperature heat quantity in oil refining apparatus is reclaimed to the oxygen-eliminating device of putting for straddle mounting.
System of the present invention, from overall angle to oil refining branch hot trap problem, power station's circulating fluidized bed boiler device (being the CFB of power station device), and the energy consumption problem that straddle mounting is put is implemented heat integration transformation, utilize steam turbine water of condensation and demineralized water to reclaim the heat of oil refining apparatus oil product, the heat of refined diesel oil in oil refining apparatus and kerosene raffinate is supplied with to steam turbine condensed water heat transmission equipment, saved the energy consumption that reduces refined diesel oil and kerosene raffinate oil temperature, and reach the oil temperature that can either reduce refined diesel oil and kerosene raffinate, can improve again the object of the water temperature of condensed water in steam turbine condensed water heat transmission equipment, kill two birds with one stone and science environmental protection.Simultaneously steam turbine condensed water has absorbed the heat of refined diesel oil and kerosene raffinate, and temperature is raise, and has saved in steam turbine condensed water heat transmission equipment the part low-pressure heater low-pressure heater of even all stopping using, the Boiler Steam of the thermoelectricity plant of saving.
In the present invention, described diesel oil heat exchanger is three, and three diesel oil heat exchangers are in series.
In the present invention, described kerosene heat exchanger is four, and four kerosene heat exchangers are in series.
In the present invention, condensed water modulating valve is installed on described condensate line, on described demineralized water pipeline, demineralized water modulating valve is installed, the intake pipe of described low pressure heat exchanger is before collateral branch's point of collateral branch's water inlet pipe, rear place is all provided with valve, on described water inlet pipe, one-way valve is installed, on the pipeline of described water inlet manifold, valve is installed, described diesel oil heat exchanger inlet pipeline, diesel oil heat exchanger rising pipe, kerosene heat exchanger inlet pipeline, on kerosene heat exchanger rising pipe, valve is all installed, in described return branch, valve is installed, the outlet pipe of described low pressure heat exchanger is before collateral branch's point of collateral branch's return branch, rear place is all provided with valve.
In the present invention, online total organic carbon analyzer and oil analysis instrument are also installed on described return main's pipeline, and each is a set of.
In the present invention, described low pressure heat exchanger is identical two of structure, and two low pressure heat exchangers are arranged in parallel, and described water inlet pipe and return branch are two pipelines, article two, water inlet pipe intersects at the feed-water end of water inlet manifold, and two return branch intersect at return main's waterexit end.
Two of object of the present invention is to provide the recovery method that heat integration low-temperature heat recovery system is put in straddle mounting in petrochemical industry, and the method is simple to operate, easy to implement.
Above-mentioned purpose of the present invention realizes by the following technical solutions: in a kind of petrochemical industry, the recovery method of heat integration low-temperature heat recovery system is put in straddle mounting, by low pressure heat exchanger, water inlet manifold, return main, diesel oil heat exchanger and kerosene heat exchanger are by refined diesel oil, the condensed water of kerosene raffinate and steam turbine and demineralized water are guided to device battery limit (BL), by diesel oil heat exchanger and kerosene heat exchanger and steam turbine water of condensation and demineralized water, carry out exchange heat, to improve cold liquid temp, the heat of absorption is sent in oxygen-eliminating device, reduce the oil temperature of refined diesel oil and kerosene raffinate in oil refining apparatus simultaneously, in assurance oil refining apparatus, the oil temperature of refined diesel oil and kerosene raffinate reaches technological requirement, reduce power consumption and water consumption that oil refining apparatus consumes in order to reduce oil temperature, realizing straddle mounting puts the object of the Low Temperature Thermal recycling in oil refining apparatus.
Compared with prior art, the present invention is guaranteeing on the basis of oil refining apparatus and the operation of power plant safety and steady, by the hot trap of continuous excavation and carry out fully demonstration assessment, by carrying out workflow reengineering, by diesel oil, kerosene and steam turbine condensed water and demineralized water supplementing water are guided to device battery limit (BL), by heat exchanger and steam turbine water of condensation, demineralized water heat exchange, can reduce air cooling device and a large amount of circulating water that even the cooling oil product of full cut-off need to be used, and steam-turbine plant energy full cut-off low-pressure heater steam saving, both steam turbine condensed water was brought up to 120 ℃ of left and right and increased generated energy, reduce oil product temperature simultaneously, reach technological requirement, reduce power consumption and the water consumption of device, promote straddle mounting and put economic benefit and technical order, realize win-win object.Take the monitoring means of science maturation simultaneously, and work out effective operation scheme and emergency preplan, guarantee oil refining apparatus and the operation of power plant safety and steady.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the equipment component figure of thermoelectricity plant in prior art, shows the structure of steam turbine condensed water heat transmission equipment and oxygen-eliminating device;
Fig. 2 is the overall structure figure that in petrochemical industry of the present invention, heat integration low-temperature heat recovery system is put in straddle mounting.
Description of reference numerals
101, condensate line; 102, condensed water modulating valve; 103, low pressure heat exchanger;
103a, intake pipe; 103b, outlet pipe; 104, the second low pressure heat exchanger;
105, the 3rd low pressure heat exchanger; 106, oxygen-eliminating device; 107, water inlet pipe; 107a, one-way valve;
108, demineralized water pipeline; 109, demineralized water modulating valve; 110, water inlet manifold; 110a, feed-water end;
110b, waterexit end; 111, diesel oil heat exchanger; 111a, diesel oil heat exchanger inlet pipeline;
111b, diesel oil heat exchanger rising pipe; 112, kerosene heat exchanger; 112a, kerosene heat exchanger inlet pipeline;
112b, kerosene heat exchanger rising pipe; 113, return main; 113a, feed-water end;
113b, waterexit end; 114, return branch; 115, online total organic carbon analyzer and oil analysis instrument
Embodiment
In petrochemical industry as shown in Figure 2, heat integration low-temperature heat recovery system is put in straddle mounting, this system comprises low pressure heat exchanger 103, water inlet manifold 110, return main 113, diesel oil heat exchanger 111 and kerosene heat exchanger 112, diesel oil heat exchanger 111 and kerosene heat exchanger 112 are shell-and-tube heat exchanger, diesel oil heat exchanger 111 is three, three diesel oil heat exchangers 111 are in series, kerosene heat exchanger 112 is four, four kerosene heat exchangers 112 are in series, low pressure heat exchanger 103 is identical two of structure, two low pressure heat exchangers 103 are arranged in parallel, each low pressure heat exchanger 103 all has intake pipe 103a and outlet pipe 103b, the intake pipe 103a of low pressure heat exchanger 103 is connected with the condensate line 101 of steam turbine, the condensed water receiving from steam turbine by condensate line 101, the outlet pipe 103b of low pressure heat exchanger 103 is connected with oxygen-eliminating device 106, by the water after 103 heat exchange of low pressure heat exchanger, enter in oxygen-eliminating device 106, the intake pipe 103a collateral branch one road water inlet pipe 107 of low pressure heat exchanger 103, this water inlet pipe 107 is connected with the feed-water end of water inlet manifold 110, the feed-water end of water inlet manifold 110 is also connected with demineralized water pipeline 108 simultaneously, to receive demineralized water, the waterexit end 110b of water inlet manifold 110 is divided into two-way, the diesel oil heat exchanger inlet pipeline 111a of leading up to is connected with the intake pipe of diesel oil heat exchanger 111 tube sides, the outlet pipe of diesel oil heat exchanger 111 tube sides is connected with diesel oil heat exchanger rising pipe 111b, the filler opening of diesel oil heat exchanger 111 shell sides and oil outlet are respectively used to be connected with the pipeline of refined diesel oil in oil refining apparatus, the kerosene heat exchanger inlet pipeline 112a of separately leading up to is connected with the intake pipe of kerosene heat exchanger 112 tube sides, the outlet pipe of kerosene heat exchanger 112 tube sides is connected with kerosene heat exchanger rising pipe 112b, the filler opening of kerosene heat exchanger 112 shell sides and oil outlet are respectively used to be connected with the pipeline of kerosene raffinate in oil refining apparatus, diesel oil heat exchanger rising pipe 111b and kerosene heat exchanger rising pipe 112b intersect at return main 113 feed-water end 113a, return main 113 waterexit end is connected with return branch 114, online total organic carbon analyzer and oil analysis instrument 115 are also installed on return main 113 pipeline, and each is a set of, so that detection water quality, return branch 114Yi collateral branch Placement is connected with the outlet pipe 103b of low pressure heat exchanger, the condensed water and the demineralized water that enter water inlet manifold 110 finally flow in oxygen-eliminating device 106 through return main 113 again after diesel oil heat exchanger 111 and 112 heat exchange of kerosene heat exchanger, utilize condensed water and the demineralized water of lower temperature to reclaim the refined diesel oil of higher temperature and the heat of kerosene raffinate in oil refining apparatus, in assurance oil refining apparatus, the oil temperature of refined diesel oil and kerosene raffinate reaches technological requirement, the heat of absorption is sent in oxygen-eliminating device 106 simultaneously, to reach the object that the low-temperature heat quantity in oil refining apparatus is reclaimed to the oxygen-eliminating device 106 of putting for straddle mounting.
In the present embodiment, the diesel oil heat exchanger 111 of telling is three, and three diesel oil heat exchangers 111 are in series; Described kerosene heat exchanger 112 is four, and four kerosene heat exchangers 112 are in series.Conversion as the present embodiment, diesel oil heat exchanger 111 and choosing of kerosene heat exchanger 112 quantity can be chosen according to actual needs, such as choosing one or two or many etc., many diesel oil heat exchangers 111 series connection arrange, the setting of also connecting of many kerosene heat exchangers.
In the present embodiment, on each pipeline, be provided with valve, valve can adopt the hand valve of manual control or the mortor operated valve of electrical control, specifically arranging of valve is as follows: condensed water modulating valve 102 is installed on condensate line 101, demineralized water modulating valve 109 is installed on demineralized water pipeline 108, the intake pipe 103a of low pressure heat exchanger 103 is before collateral branch's point of collateral branch's water inlet pipe 107, rear place is all provided with valve, one-way valve 107a is installed on water inlet pipe 107, on the pipeline of water inlet manifold 110, valve is installed, diesel oil heat exchanger inlet pipeline 111a, diesel oil heat exchanger rising pipe 111b, kerosene heat exchanger inlet pipeline 112a, on kerosene heat exchanger rising pipe 112b, valve is all installed, in return branch 114, valve is installed, the outlet pipe 103b of low pressure heat exchanger 103 is before collateral branch's point of collateral branch's return branch 114, rear place is all provided with valve.By valve, control conducting and the working state of all parts.
The low pressure heat exchanger 103 of selecting Liang Tai to be arranged in parallel in the present embodiment, the water inlet pipe 107 of collateral branch and return branch 114 are two pipelines, article two, water inlet pipe 107 intersects at the feed-water end 110a of water inlet manifold 110, and two return branch 114 intersect at return main 113 waterexit end 113b.
Described condensate line 101 in the present embodiment, low pressure heat exchanger 103, water inlet pipe 107 and return branch 114 form a set of condensed water intensification unit, condensed water intensification unit in the present embodiment is two covers, two cover condensed water intensification unit are shape setting in parallel, and the final outlet of every suit all connects an oxygen-eliminating device 106.As the conversion of the present embodiment, described condensed water intensification unit also can only adopt a set of or adopt many covers such as three covers, quadruplet, overlap condensed water intensification unit more and be shape setting in parallel, many covers that structure is set is identical with the cover of two in the present embodiment principle.
The present invention also discloses straddle mounting in above-mentioned petrochemical industry and put the recovery method of heat integration low-temperature heat recovery system, by low pressure heat exchanger 103, water inlet manifold 110, return main 113, diesel oil heat exchanger 111 and kerosene heat exchanger 112 are by refined diesel oil, the condensed water of kerosene raffinate and steam turbine and demineralized water are guided to device battery limit (BL), by diesel oil heat exchanger 111 and kerosene heat exchanger 112, carry out exchange heat with steam turbine water of condensation and demineralized water, to improve cold liquid temp, the heat of absorption is sent in oxygen-eliminating device 106, reduce the oil temperature of refined diesel oil and kerosene raffinate in oil refining apparatus simultaneously, in assurance oil refining apparatus, the oil temperature of refined diesel oil and kerosene raffinate reaches technological requirement, reduce power consumption and water consumption that oil refining apparatus consumes in order to reduce oil temperature, realizing straddle mounting puts the object of the Low Temperature Thermal recycling in oil refining apparatus.
System of the present invention in use, the shell side outlet of three refined diesel oil heat exchangers 111 connects a pipeline near boiler plant, pipeline is about 900 meters, need bag thermal insulation layer, enter newly-increased refined diesel oil/boiler water heat exchanger, three heat exchanger series connection, refined diesel oil is down to 60 ℃ from 170 ℃, steam turbine comes water of condensation and demineralized water to be heated to 120 ℃ from 41 ℃, and after heat exchange, refined diesel oil returns to access before Cooler in Hydro-processing.Non-leakage to boiler water for guaranteeing refined diesel oil, take water to walk tube side, oil and walk the way that shell side, oil circuit are newly gone up voltage-controlled modulating valve, make the pressure of refined diesel oil before entering diesel oil heat exchanger be not more than 0.7MPa, water side pressure is 0.85MPa; And on diesel oil heat exchanger tube pass outlet boiler water pipeline newly-increased online total organic carbon analyzer and oil analysis instrument (online TOC) each is a set of, to detect water quality.Through the accounting to pipeline pressure drop, heat exchanger pressure drop etc., column bottoms pump pressure head, pump discharge pressure 1.3MPa, can meet the crushing that increases pipeline newly.
After refined diesel oil heat exchange, temperature is increased to after 80 ℃, backwash oil temperature through raw material filter rises thereupon, need increase a water cooler at the backwash oil export pipeline of feedstock oil filter, the plan idle water cooler that reuses, recoil washing oil delivery device from 130 ℃ are down to 60 ℃, enters to solve recoil washing oil the potential safety hazard that tank field temperature is high.4 temperature control air cooling frequency changers on refined oil air cooling device, the counter-measure as causing refined diesel oil temperature to rise in lack of water situation, eliminates safe hidden trouble.
Shell side outlet at four kerosene raffinate/mixed feeding kerosene heat exchangers 112 connects a pipeline near boiler plant, pipeline is about 800 meters, need bag insulation, enter newly-increased kerosene raffinate/boiler water heat exchanger, the series connection of 4 heat exchangers, kerosene raffinate cools to 55 ℃ from 125 ℃, and steam turbine comes water of condensation and demineralized water to be heated to 120 ℃ from 41 ℃, after heat exchange, kerosene raffinate returns to original device, before kerosene raffinate water cooler, accesses.Non-leakage to boiler water for guaranteeing kerosene raffinate, take water to walk tube side, oil and walk the way that shell side, oil circuit are newly gone up voltage-controlled modulating valve, make the pressure of kerosene raffinate before entering kerosene heat exchanger be not more than 0.7MPa, water side pressure is 0.85MPa.Through the accounting to pipeline pressure drop, heat exchanger pressure drop etc., column bottoms pump pressure head, pump discharge pressure 1.25MPa, meets the crushing that increases pipeline newly.On heat exchanger circulating water, water side increases temperature control adjusting valve, to solve in the situation of boiler water shortage, and the zooming potential safety hazard of kerosene raffinate temperature.
Benefit of the present invention is as follows:
1) benefit situation:
After transformation, the steam condensate of about 100t/h CFB boiler replenishing water and 260t/h can be brought up to 120 ℃, the heat of recycling by 43 ℃, 48 ℃ respectively: 100 * 1000 * (120-43)+260 * 1000 * (120-48) }/10000=2642 kilogram mark oil/hour.By 2600 yuan of calculating of fuel oil per ton, increasing every year benefit is ten thousand yuan of 2642/1000 * 6000 * 2600 * 10-4=4121.52.If deduct 542.7 kilograms of mark oil of heat of increasing insulation and reclaiming/hour, the annual actual benefit increasing of this project is 3274.9 ten thousand yuan of (2642-542.7) * 6000/1000 * 2600 * 10-4 ≈.
Annual by calculating in 6000 hours, the oxygen-eliminating device steam 1.0MPa that reduces per hour that uses by oneself, 300 ℃ of about 25t/h of low pressure steam, the low-pressure heater of simultaneously stopping using can increase the generating of steam turbine, reduce high pressure steam consumption, can reduce the about 20g/kwh of CFB device coal consumption of power supply.If conversion is for oil refining processing crude oil comprehensive energy consumption, can reduce (2642-542.7) * 6000/13500000=0.93 kilogram of mark oil/ton.
Oil refining hydrogenation plant all air cooling devices that can stop, year economize on electricity 107.52 ten thousand kWh, ten thousand yuan of 107.52 * 0.62=66.7 reduce expenses in year.
Oil refining kerosene hydrogenation device can be saved circulating water 100t/h, ten thousand yuan of year cost-saving 100 * 6000 * 0.27=16.2.
Above three additions, this project is created ten thousand yuan/year of benefit 3274.9+66.7+16.2=3357.8.
2) safe operation situation:
This project in experimental stage, to not occurring so far, stop using or other affects the accident event that device is produced by leakage, and the power savings advantages of heat integration integrative project is given full play to.
The above embodiment of the present invention is not limiting the scope of the present invention; embodiments of the present invention are not limited to this; all this kind is according to foregoing of the present invention; according to ordinary skill knowledge and the customary means of related domain; do not departing under the above-mentioned basic fundamental thought of the present invention prerequisite; the modification of other various ways that said structure of the present invention is made, replacement or change, within all should dropping on protection scope of the present invention.
Claims (7)
1. in petrochemical industry, heat integration low-temperature heat recovery system is put in straddle mounting, it is characterized in that: this system comprises low pressure heat exchanger (103), water inlet manifold (110), return main (113), diesel oil heat exchanger (111) and kerosene heat exchanger (112), diesel oil heat exchanger (111) and kerosene heat exchanger (112) are shell-and-tube heat exchanger, described low pressure heat exchanger (103) has intake pipe (103a) and outlet pipe (103b), the intake pipe (103a) of low pressure heat exchanger (103) is connected with the condensate line (101) of steam turbine, by condensate line (101), receive the condensed water from steam turbine, the outlet pipe (103b) of low pressure heat exchanger (103) is connected with oxygen-eliminating device (106), by the water after low pressure heat exchanger (103) heat exchange, enter in oxygen-eliminating device (106), intake pipe (103a) the collateral branch one road water inlet pipe (107) of described low pressure heat exchanger (103), this water inlet pipe (107) is connected with the feed-water end of described water inlet manifold (110), the feed-water end of described water inlet manifold (110) is also connected with demineralized water pipeline (108) simultaneously, to receive demineralized water, the waterexit end of described water inlet manifold (110) is divided into two-way, the diesel oil heat exchanger inlet pipeline (111a) of leading up to is connected with the intake pipe of diesel oil heat exchanger (111) tube side, the outlet pipe of diesel oil heat exchanger (111) tube side is connected with diesel oil heat exchanger rising pipe (111b), the filler opening of diesel oil heat exchanger (111) shell side and oil outlet are respectively used to be connected with the pipeline of refined diesel oil in oil refining apparatus, the kerosene heat exchanger inlet pipeline (112a) of separately leading up to is connected with the intake pipe of kerosene heat exchanger (112) tube side, the outlet pipe of kerosene heat exchanger (112) tube side is connected with kerosene heat exchanger rising pipe (112b), the filler opening of kerosene heat exchanger (112) shell side and oil outlet are respectively used to be connected with the pipeline of kerosene raffinate in oil refining apparatus, described diesel oil heat exchanger rising pipe (111b) and kerosene heat exchanger rising pipe (112b) intersect at the feed-water end of described return main (113), return main's (113) waterexit end is connected with return branch (114), described return branch (114) is connected with the outlet pipe (103b) of low pressure heat exchanger with collateral branch's Placement, the condensed water and the demineralized water that enter water inlet manifold (110) finally flow in oxygen-eliminating device (106) through return main (113) after diesel oil heat exchanger (111) and kerosene heat exchanger (112) heat exchange again, utilize condensed water and the demineralized water of lower temperature to reclaim the refined diesel oil of higher temperature and the heat of kerosene raffinate in oil refining apparatus, in assurance oil refining apparatus, the oil temperature of refined diesel oil and kerosene raffinate reaches technological requirement, the heat of absorption is sent in oxygen-eliminating device (106) simultaneously, to reach the object that the low-temperature heat quantity in oil refining apparatus is reclaimed to the oxygen-eliminating device (106) of putting for straddle mounting.
2. in petrochemical industry according to claim 1, heat integration low-temperature heat recovery system is put in straddle mounting, it is characterized in that: described diesel oil heat exchanger (111) is three, and three diesel oil heat exchangers (111) are in series.
3. in petrochemical industry according to claim 1, heat integration low-temperature heat recovery system is put in straddle mounting, it is characterized in that: described kerosene heat exchanger (112) is four, and four kerosene heat exchangers (112) are in series.
4. in petrochemical industry according to claim 1, heat integration low-temperature heat recovery system is put in straddle mounting, it is characterized in that: condensed water modulating valve (102) is installed on described condensate line (101), on described demineralized water pipeline (108), demineralized water modulating valve (109) is installed, the intake pipe (103a) of described low pressure heat exchanger (103) is before collateral branch's point of collateral branch's water inlet pipe (107), rear place is all provided with valve, one-way valve (107a) is installed on described water inlet pipe (107), on the pipeline of described water inlet manifold (110), valve is installed, described diesel oil heat exchanger inlet pipeline (111a), diesel oil heat exchanger rising pipe (111b), kerosene heat exchanger inlet pipeline (112a), on kerosene heat exchanger rising pipe (112b), valve is all installed, described return branch is provided with valve on (114), the outlet pipe (103b) of described low pressure heat exchanger (103) is before collateral branch's point of collateral branch's return branch (114), rear place is all provided with valve.
5. in petrochemical industry according to claim 1, heat integration low-temperature heat recovery system is put in straddle mounting, it is characterized in that: online total organic carbon analyzer and oil analysis instrument are also installed on described return main's (113) pipeline, and each is a set of.
6. according to straddle mounting in the petrochemical industry described in claim 1 to 5 any one, put heat integration low-temperature heat recovery system, it is characterized in that: described low pressure heat exchanger (103) is identical two of structure, two low pressure heat exchangers (103) are arranged in parallel, described water inlet pipe (107) and return branch (114) are two pipelines, article two, water inlet pipe (107) intersects at the feed-water end of water inlet manifold (110), and two return branch (114) intersect at the waterexit end of return main (113).
7. in the petrochemical industry as described in claim 1 to 6 any one, the recovery method of heat integration low-temperature heat recovery system is put in straddle mounting, by low pressure heat exchanger (103), water inlet manifold (110), return main (113), diesel oil heat exchanger (111) and kerosene heat exchanger (112) are by refined diesel oil, the condensed water of kerosene raffinate and steam turbine and demineralized water are guided to device battery limit (BL), by diesel oil heat exchanger (111) and kerosene heat exchanger (112), carry out exchange heat with steam turbine water of condensation and demineralized water, to improve cold liquid temp, the heat of absorption is sent in oxygen-eliminating device (106), reduce the oil temperature of refined diesel oil and kerosene raffinate in oil refining apparatus simultaneously, in assurance oil refining apparatus, the oil temperature of refined diesel oil and kerosene raffinate reaches technological requirement, reduce power consumption and water consumption that oil refining apparatus consumes in order to reduce oil temperature, realizing straddle mounting puts the object of the Low Temperature Thermal recycling in oil refining apparatus.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138594A (en) * | 2015-08-24 | 2018-06-08 | 沙特阿拉伯石油公司 | The recycling and reuse of discarded energy in industrial equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109538A (en) * | 1996-06-21 | 1998-01-16 | Chiyoda Corp | Method for incinerating municipal refuse |
| EP1204719B1 (en) * | 1999-04-08 | 2003-04-23 | Abb Lummus Global Inc. | Integrated residue thermal cracking and partial oxidation process |
| CN1764805A (en) * | 2003-07-04 | 2006-04-26 | 山田胜重 | Reheat/regenerative type thermal power plant using Rankine cycle |
| CN102774917A (en) * | 2012-08-14 | 2012-11-14 | 众和海水淡化工程有限公司 | Petrifaction waste heat utilization based low-temperature multiple-effect sea water distillation desalinization system |
| CN103349885A (en) * | 2013-07-23 | 2013-10-16 | 蔡兵 | Oil steam recovery system and recovery method |
-
2013
- 2013-10-22 CN CN201310500045.0A patent/CN103541780A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH109538A (en) * | 1996-06-21 | 1998-01-16 | Chiyoda Corp | Method for incinerating municipal refuse |
| EP1204719B1 (en) * | 1999-04-08 | 2003-04-23 | Abb Lummus Global Inc. | Integrated residue thermal cracking and partial oxidation process |
| CN1764805A (en) * | 2003-07-04 | 2006-04-26 | 山田胜重 | Reheat/regenerative type thermal power plant using Rankine cycle |
| CN102774917A (en) * | 2012-08-14 | 2012-11-14 | 众和海水淡化工程有限公司 | Petrifaction waste heat utilization based low-temperature multiple-effect sea water distillation desalinization system |
| CN103349885A (en) * | 2013-07-23 | 2013-10-16 | 蔡兵 | Oil steam recovery system and recovery method |
Non-Patent Citations (1)
| Title |
|---|
| 郑文凯: "跨装置热联合项目节能改造效益分析", 《能源研究与利用》, no. 5, 15 October 2012 (2012-10-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138594A (en) * | 2015-08-24 | 2018-06-08 | 沙特阿拉伯石油公司 | The recycling and reuse of discarded energy in industrial equipment |
| CN108138590A (en) * | 2015-08-24 | 2018-06-08 | 沙特阿拉伯石油公司 | The recycling and reuse of discarded energy in industrial equipment |
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