CN209392974U - A kind of oxygen barrier regenerative system of activated coke moving bed nitrogen heating - Google Patents
A kind of oxygen barrier regenerative system of activated coke moving bed nitrogen heating Download PDFInfo
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- CN209392974U CN209392974U CN201821902774.3U CN201821902774U CN209392974U CN 209392974 U CN209392974 U CN 209392974U CN 201821902774 U CN201821902774 U CN 201821902774U CN 209392974 U CN209392974 U CN 209392974U
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- nitrogen
- activated coke
- distribution pipe
- oxygen barrier
- moving bed
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Abstract
The utility model provides a kind of oxygen barrier regenerative system of activated coke moving bed nitrogen heating, including space division system, heat exchanger, regenerating unit and sulphuric acid plant, the regenerating unit is tubbiness, inside is equipped with nitrogen distribution pipe and nitrogen distribution pipe side wall is equipped with several nozzles, regenerating unit top is equipped with feed inlet, lower part is equipped with discharge port, and upper portion side wall is equipped with gas vent, and gas vent passes through pipeline again and is connected to sulphuric acid plant；Space division system is connected to by pipeline with heat exchanger, and heat exchanger, which is connected to nitrogen distribution pipe by nitrogen pipeline and is connected to interface, to be located at outside regenerating unit.The utility model additionally provides a kind of oxygen barrier regeneration method of activated coke moving bed nitrogen heating.High temperature nitrogen contact heating activated coke is used in the utility model, gas, solid heat transfer efficiency are high, and nitrogen is evenly distributed through multilayer distribution pipe and multiple nozzles, and the activated coke bed of matching heating certain flow, each section of bed is heated evenly, and regeneration is thorough.
Description
Technical field
The utility model relates to activated coke regeneration fields more particularly to a kind of activated coke moving bed nitrogen to heat oxygen barrier regeneration
System and a kind of activated coke moving bed nitrogen heat oxygen barrier regeneration method.
Background technique
The flue gas that the production lines such as coal-burning boiler, coke oven, sintering, pelletizing generate contains the pollutants such as SO2, NOX, with environmental protection
Discharge standard it is increasingly strict, the exploitation and application of the synchronous removal process equipment of multiple pollutant are particularly important.
On activated coke surface, defective carbon atom, oxygen-containing functional group, polar surfaces oxide are in 100 DEG C ~ 200 DEG C smoke temperatures
Under effect, catalysis, oxidation reaction occur for H2O, O2 in SO2 and flue gas, generate H2SO4, are fixed on activated coke inner surface.Absorption
The activated coke of saturation is parsed the SO2 gas of high concentration by regenerating unit high-temperature heating, and concentrated sulfuric acid byproduct is further made.When
When spraying into gaseous state NH3, NOX is oxygen-containing using activated coke pore surface and nitrogen-containing functional group is active site, occurs with O2, NH3
Selective catalytic reduction reaction generates N2 and H2O, and NOX is removed, and completes denitration reaction.Activated coke has synchronized desulfuring and denitrifying
Dual function, regenerated activated coke are recycled, and the by-product concentrated sulfuric acid has certain economic value, meet recycling economy development reason
It reads.
Activated coke synchronized desulfuring and denitrifying mainly includes absorption, catalysis, oxidation and regenerative process, adsorbent equipment and regenerating unit
It is the core equipment of system.Active coke regeneration device is directly heated with hot fume in the prior art, is high temperature, Gao Han inside device
Oxygen amount environmental condition, activated coke are likely to accumulation of heat spontaneous combustion and cause fire.Hot fume is distributed in regenerating unit with pipeline, is easy hair
Raw blocking.Hot fume is unevenly distributed or hot fume flow cannot match well with activated coke flow, activated coke local heating
Unevenness, regeneration are not thorough.
Patent CN 200610017066.7 discloses moving bed flue gas desulfurization denitration dust-removing technique, and regenerating unit is using warm
The hot fume non-contact thermal that wind furnace generates, heating coil are placed in inside regenerating unit, and heat exchange efficiency is low, and activated coke regenerates not
Thoroughly, easily blocking.
Patent CN 201510984346.4 discloses a kind of activated coke flue gas purification system, and regenerating unit uses hot-blast stove
The hot fume of generation directly heats, and is high temperature, rich oxygen content environment in regenerating unit, and activated coke is likely to accumulation of heat kindling.
Patent CN 201510125833.5 discloses a kind of continuous activating and regenerating system of activated coke, indirect using intracavity
Heating method can avoid activated coke and block, but system equipment is huge, and heat exchange efficiency is lower, and the activated coke regeneration period is long, then
Life is not thorough.
Utility model content
Purpose of utility model: the purpose of this utility model is that in view of the deficiencies of the prior art, providing a kind of activated coke shifting
Dynamic bed nitrogen heats oxygen barrier regenerative system, and the utility model additionally provides a kind of oxygen barrier regeneration side of activated coke moving bed nitrogen heating
Method.
The innovative point of the utility model is with hot fume non-contact thermal nitrogen, then active with nitrogen contact heating
Coke, gas, solid heat transfer efficiency are high, and activated coke regeneration is thorough.A large amount of nitrogen enter regenerating unit, form inert gas confined space,
Starvation effectively prevents the generation that high temperature has activated coke spontaneous combustion under Oxygen Condition to cause fire phenomena.
Technical solution: in order to reach above-mentioned purpose of utility model, the utility model is such completion, a kind of activated coke
Moving bed nitrogen heats oxygen barrier regenerative system, including space division system, heat exchanger, regenerating unit and sulphuric acid plant, the regeneration dress
Be set to tubbiness, inside is equipped with nitrogen distribution pipe and nitrogen distribution pipe side wall is equipped with several nozzles, regenerating unit top be equipped with into
Material mouth, lower part are equipped with discharge port, and upper portion side wall is equipped with gas vent, and gas vent passes through pipeline again and is connected to sulphuric acid plant；It is empty
Subsystem is connected to by pipeline with heat exchanger, and heat exchanger, which is connected to nitrogen distribution pipe by nitrogen pipeline and is connected to interface, to be located at again
Outside generating apparatus.For the system when saturated active coke regenerates, a large amount of nitrogen enter regenerating unit, form inert gas confined air
Between, starvation effectively prevents the generation that high temperature has activated coke spontaneous combustion under Oxygen Condition to cause fire phenomena.
Further, the regenerating unit top and the bottom are pyramidal structure, are conducive to activated coke disengaging regenerating unit.
Further, the nitrogen distribution pipe number of plies is three layers or more and is arranged in parallel, and interlayer spacing is 0.5m ~ 1.0m,
Every layer of nitrogen distribution pipe is made of several branch pipes, and nitrogen is more uniformly spread, and activated coke regeneration is thorough.
Further, it is provided with inverted V type slot above the nitrogen distribution pipe, two flank angle of inverted V type slot is 30 ° ~
45 °, the spacing between two neighboring inverted V type slot slot foot is 0.3 ~ 0.5m.Occur when avoidable activated coke from top to bottom moves stifled
Plug, avoids nitrogen distribution pipe and nozzle from being worn.
Further, the nozzle opening is downward, effectively prevent activated coke particle plug nozzle fine crushing.
Further, the nitrogen distribution pipe is equipped with thermometer, can effectively monitor the temperature in regenerating unit.
Further, the nitrogen pipeline is equipped with regulating valve and flowmeter, adjusts nitrogen flow, control by regulating valve
Activated coke regeneration temperature is 350 DEG C ~ 400 DEG C.
Further, it is equipped with unloader above the feed inlet and below discharge port, frequency conversion control is equipped on unloader
Device processed is additionally provided with level-sensing device at the top of regenerating unit, and the material position is calculated as radar level gauge or ultrasonic material level detection unit.Unloader knot
The bed height data that level-sensing device is shown are closed, the speed that adjustment saturated active coke moves down controls activated coke in regenerating unit
The interior residence time is 5h ~ 10h, and regeneration is thorough.
Further, the heat exchanger is pipe heat exchanger or fin type heat exchanger.
A kind of oxygen barrier regeneration method of activated coke moving bed nitrogen heating, comprising the following steps:
(1) nitrogen that empty wind system generates is passed through heat exchanger, nitrogen is after heat exchanger is heated to 450 DEG C ~ 550 DEG C through nitrogen
Gas distribution pipe is delivered to regenerating unit, and the heat source in the heat exchanger is hot fume；
(2) be cylindric, 7 ~ 9mm of diameter by shape, the saturated active coke of 8 ~ 15mm of length is through the discharging above feed inlet
Machine is transported in regenerating unit, saturated active coke top-down movement under gravity, on nitrogen distribution pipe side wall
Counter current contacting occurs for 450 DEG C ~ 550 DEG C of the nitrogen that the nozzle that Open Side Down sprays, and is adjusted by the regulating valve on nitrogen pipeline
Nitrogen flow, so that the temperature that saturated active coke is heated is controlled at 350 DEG C ~ 400 DEG C, saturated active coke parses SO2 gas,
SO2 gas enters sulphuric acid plant from the gas vent on regenerating unit, and concentrated sulfuric acid byproduct is made in sulphuric acid plant；
(3) saturated active coke obtains regeneration activity coke after stopping 5h ~ 10h in regenerating unit, and regeneration activity coke is by regenerating
Device discharge port is fallen into the unloader below discharge port.
With hot fume non-contact thermal nitrogen, then with nitrogen contact heating activated coke, gas, solid heat transfer efficiency are high, living
Property coke regeneration it is thorough.A large amount of nitrogen enter regenerating unit, form inert gas confined space, and starvation effectively prevents height
The generation that temperature has activated coke spontaneous combustion under Oxygen Condition to cause fire phenomena, activated coke are heated to 350 DEG C ~ 400 DEG C, parse height
The SO2 gas of concentration obtains the concentrated sulfuric acid byproduct with economic value into sulphuric acid plant.
The utility model has the beneficial effects that the utility model has the advantages that compared with traditional technology
(1) high temperature nitrogen contact heating activated coke is used in the utility model, gas, solid heat transfer efficiency are high, and nitrogen is through multilayer
Distribution pipe and multiple nozzles evenly distribute, and the activated coke bed of matching heating certain flow, each section of bed is heated evenly, and regenerates thorough
Bottom；
(2) a large amount of nitrogen enter regenerating unit, form inert gas confined space, and starvation effectively prevents high temperature
There is activated coke spontaneous combustion under Oxygen Condition to cause the generation of fire phenomena；
(3) in regenerating unit each section of activated coke bed be all provided with temperature point, nitrogen is controlled by regulating valve by temperature data
Flow, system operatio are intuitive, flexible；
(4) nitrogen distribution pipe top sets inverted V type slot, can avoid blocking when activated coke from top to bottom moves, avoids nitrogen
Gas distribution pipe and nozzle are worn, and nitrogen distribution pipe side wall is equipped with multiple nozzles, and Open Side Down, effectively prevent activated coke fine crushing
Particle plug nozzle.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the top view of the utility model.
Fig. 3 is nitrogen distribution pipe sectional view.
Specific embodiment
Embodiment 1: as shown in Figure 1, 2, 3, a kind of oxygen barrier regenerative system of activated coke moving bed nitrogen heating, including space division system
System 001, heat exchanger 002, regenerating unit 005 and sulphuric acid plant 006, heat exchanger 002 are pipe heat exchanger or fin type heat exchanger,
Regenerating unit 005 is tubbiness, and 005 top and the bottom of regenerating unit are pyramidal structure, is conducive to activated coke disengaging regenerating unit 005,
Inside is equipped with nitrogen distribution pipe 052, and 052 side wall of nitrogen distribution pipe is equipped with several nozzles 054 and nozzle 054, and Open Side Down, spray
Open Side Down can effectively prevent activated coke particle plug nozzle fine crushing for mouth 054, and nitrogen distribution pipe 052 is equipped with thermometer, can be with
Temperature effectively in monitoring regenerating unit 005,052 number of plies of nitrogen distribution pipe are three layers or more and are arranged in parallel that interlayer spacing is
0.5m ~ 1.0m, every layer of nitrogen distribution pipe 052 are made of several branch pipes, and nitrogen is more uniformly spread, and activated coke regeneration is thorough, nitrogen
Inverted V type slot 053 is provided with above gas distribution pipe 052,053 liang of flank angle of inverted V type slot is 30 ° ~ 45 °, two neighboring inverted V type slot
Spacing between 053 slot foot is 0.3 ~ 0.5m, and the design of inverted V type slot 053 can avoid occurring when activated coke from top to bottom moves stifled
Plug, avoids nitrogen distribution pipe 052 and nozzle 054 from being worn；005 top of regenerating unit is equipped with feed inlet 061, and lower part is equipped with and unloads
Material mouth 059 is equipped with top unloader 056 above feed inlet 061, is equipped with bottom discharge machine 057 below discharge port 059, top is unloaded
Frequency-variable controller is equipped on material machine 056 and bottom discharge machine 057, the top of regenerating unit 005 is additionally provided with level-sensing device 058, material
Position meter 058 is radar level gauge or ultrasonic material level detection unit；Top unloader 056 and bottom discharge machine 057 combine level-sensing device 058 aobvious
The bed height data shown, the speed that adjustment activated coke moves down control residence time of the activated coke in regenerating unit 005
For 5h ~ 10h, regeneration is thoroughly.005 upper portion side wall of regenerating unit is equipped with gas vent 060, gas vent 060 again by pipeline and
Sulphuric acid plant 006 is connected to；Space division system 001 is connected to by pipeline with heat exchanger 002, and heat exchanger 002 passes through 007 He of nitrogen pipeline
Nitrogen distribution pipe 052 is connected to and connection interface is located at outside regenerating unit 005, and nitrogen pipeline 007 is equipped with regulating valve 003 and stream
Meter 004 adjusts nitrogen flow by regulating valve 003, and control activated coke regeneration temperature is 350 DEG C ~ 400 DEG C.The system is full
When with activated coke regeneration, a large amount of nitrogen enter regenerating unit 005, form inert gas confined space, and starvation effectively avoids
The generation that high temperature has activated coke spontaneous combustion under Oxygen Condition to cause fire phenomena.
Embodiment 2: a kind of oxygen barrier regeneration method of activated coke moving bed nitrogen heating, the nitrogen that empty wind system 001 is generated
It is passed through heat exchanger 002, nitrogen is delivered to regenerating unit through nitrogen distribution pipe 052 after heat exchanger 002 is heated to 450 DEG C ~ 550 DEG C
005, the heat source in heat exchanger 002 is hot fume；It is again cylindric, 7 ~ 9mm of diameter, 8 ~ 15mm of length saturated activity by shape
Coke is transported in regenerating unit 005 through top unloader 056, saturated active coke top-down movement under gravity,
Counter current contacting occurs for 450 DEG C ~ 550 DEG C of the nitrogen sprayed with the downward nozzle 054 of 052 side wall upper opening of nitrogen distribution pipe, real
Now gas, solid two-phase heat exchange, adjust nitrogen flow by the regulating valve on nitrogen pipeline 007, so that saturated active coke was heated
Temperature is controlled at 350 DEG C ~ 400 DEG C, and saturated active coke parses SO2 gas, and SO2 gas goes out from the gas on regenerating unit 005
Mouth 060 enters sulphuric acid plant 006, and concentrated sulfuric acid byproduct is made in sulphuric acid plant 006；Saturated active coke stops in regenerating unit 005
Regeneration activity coke is obtained after staying 5h ~ 10h, regeneration activity coke is fallen into bottom discharge machine 057 by regenerating unit discharge port, and circulation makes
With.
Claims (9)
1. a kind of activated coke moving bed nitrogen heats oxygen barrier regenerative system, which is characterized in that including space division system, heat exchanger, again
Generating apparatus and sulphuric acid plant, the regenerating unit are tubbiness, and inside is equipped with nitrogen distribution pipe and nitrogen distribution pipe side wall is equipped with
Several nozzles, regenerating unit top are equipped with feed inlet, and lower part is equipped with discharge port, and upper portion side wall is equipped with gas vent, gas vent
It is connected to again by pipeline with sulphuric acid plant；Space division system is connected to by pipeline with heat exchanger, and heat exchanger passes through nitrogen pipeline and nitrogen
Gas distribution pipe is connected to and connection interface is located at outside regenerating unit.
2. activated coke moving bed nitrogen according to claim 1 heats oxygen barrier regenerative system, which is characterized in that the regeneration
Device top and the bottom are pyramidal structure.
3. activated coke moving bed nitrogen according to claim 1 heats oxygen barrier regenerative system, which is characterized in that the nitrogen
The distribution pipe number of plies is three layers or more and is arranged in parallel that interlayer spacing is 0.5m ~ 1.0m, and every layer of nitrogen distribution pipe is by several branch pipe groups
At.
4. according to claim 1 or the 3 activated coke moving bed nitrogen heat oxygen barrier regenerative system, which is characterized in that described
Be provided with inverted V type slot above nitrogen distribution pipe, two flank angle of inverted V type slot is 30 ° ~ 45 °, two neighboring inverted V type slot slot foot it
Between spacing be 0.3 ~ 0.5m.
5. activated coke moving bed nitrogen according to claim 4 heats oxygen barrier regenerative system, which is characterized in that the nozzle
Open Side Down.
6. activated coke moving bed nitrogen according to claim 5 heats oxygen barrier regenerative system, which is characterized in that the nitrogen
Distribution pipe is equipped with thermometer.
7. activated coke moving bed nitrogen according to claim 1 heats oxygen barrier regenerative system, which is characterized in that the nitrogen
Pipeline is equipped with regulating valve and flowmeter.
8. activated coke moving bed nitrogen according to claim 1 heats oxygen barrier regenerative system, which is characterized in that the charging
It is equipped with unloader above mouthful and below discharge port, frequency-variable controller is equipped on unloader, is additionally provided at the top of regenerating unit
Level-sensing device, the material position are calculated as radar level gauge or ultrasonic material level detection unit.
9. activated coke moving bed nitrogen according to claim 1 heats oxygen barrier regenerative system, which is characterized in that the heat exchange
Device is pipe heat exchanger or fin type heat exchanger.
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| CN201821902774.3U CN209392974U (en) | 2018-11-19 | 2018-11-19 | A kind of oxygen barrier regenerative system of activated coke moving bed nitrogen heating |
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| CN201821902774.3U CN209392974U (en) | 2018-11-19 | 2018-11-19 | A kind of oxygen barrier regenerative system of activated coke moving bed nitrogen heating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364683A (en) * | 2018-11-19 | 2019-02-22 | 江苏环集团有限公司 | A kind of activated coke moving bed nitrogen heats oxygen barrier regenerative system and regeneration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364683A (en) * | 2018-11-19 | 2019-02-22 | 江苏环集团有限公司 | A kind of activated coke moving bed nitrogen heats oxygen barrier regenerative system and regeneration method |
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