A kind of coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes thermal and TRT
Technical field
The utility model belongs to coke oven for iron field, and more particularly to a kind of coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes hot charging
Put.
Background technology
Coke oven can do high-temperature retorting processing to coal, be efficiently converted to coke, coke-stove gas, coal tar, crude benzol
It is efficient energy conversion kiln Deng product.Hanker in coke oven expenditure, the heat of taking out of of 650 DEG C of -700 DEG C of raw coke oven gas accounts for
36%, there is high recycling to be worth.
Coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes the structure of thermal, in overall point, in, outer three layers of basic structure.It is interior
Layer is high temperature resistant, the cylinder of corrosion resistant steel alloy material, and raw coke oven gas flows through from bottom to top in cylinder.In order to improve wall temperature and
Augmentation of heat transfer, with such as straight fins and ailhead extension heat-transfer area on cylinder inner wall, to keep higher internal face temperature, do not make
Tar steam therein condenses and is attached on an inwall in raw coke oven gas cooling exothermic process;Centre is core heat transfer layer, is had
High heat conduction ability, certain thickness high temperature resistant solid dielectric layer is closely attached to the outer wall of inner cylinder, and heat-transfer pipe is situated between through solid
Matter layer, and be in close contact with the solid dielectric layer, what is flowed through in heat-transfer pipe is to take thermal medium, and it absorbs interior in flow process
The thermal discharge of raw coke oven gas in cylinder, temperature raises in flow process from bottom to top.Heat-transfer pipe or spiral are spiraled solid at this
In body medium, or the solid dielectric layer is uprightly arranged in from bottom to top, solid dielectric layer need to cover the outer surface of whole heat-transfer pipe;
Outer layer is heat insulation protecting layer, metal material cylinder, posts insulation material on internal face, inner cylinder and intercooler core heat transfer layer are played
Insulation and the effect of protection, reduce heat loss, are not hit.
Coke oven coke oven uprising tube raw coke oven gas waste-heat recovery device in use, is influenceed, in device due to being run by alternation
The temperature height of each several part from inside to outside and from bottom to top is inconsistent and three layers of the material inconsistent so that each several part
Between expansion it is inconsistent, most important of which is that, between the outer wall and solid dielectric layer of inner cylinder, solid dielectric layer and heat-transfer pipe
Between produce gap, the gap generation cause between inner tank theca and solid dielectric layer heat transmission resistance increase, heat transfer efficiency
Reduce, heat transfer failure.
Utility model content
Technical problem:In order to solve the defects of prior art, the utility model provides a kind of coke oven coke oven uprising tube raw coke oven gas
Waste heat recovery takes thermal.
Technical scheme:A kind of coke oven coke oven uprising tube raw coke oven gas waste heat recovery provided by the utility model takes thermal, including cigarette
Gas passage and heat exchanger tube;The heat exchanger tube includes stud and the inner drum layer, middle dielectric layer and the guarantor that set gradually from outer to inner
Warm protective layer;Described stud one end is fixed on inner drum layer outer wall, and the other end is located inside middle dielectric layer;The heat exchanger tube spiral shell
Rotation is arranged in middle dielectric layer, and its Heating medium is located at exhaust gases passes bottom, and the outlet of its heating agent is located at exhaust gases passes top.
As an improvement, including exhaust gases passes and heat exchanger tube;The heat exchanger tube includes stud and set gradually from outer to inner
Nanometer black matrix layer, inner drum layer, middle dielectric layer, heat insulation protecting layer and outer tube wall;Described stud one end is fixed on outside inner drum layer
On wall, the other end is located inside middle dielectric layer;The heat exchanger tube spiral is arranged in middle dielectric layer, and its Heating medium is located at
The outer tube wall bottom of exhaust gases passes, the outlet of its heating agent is located at the outer tube wall top of exhaust gases passes.
Improved as another kind, the exhaust gases passes inwall is provided with one group of straight fins or ailhead;In the exhaust gases passes
It is movably equipped with spoiler.
Improved as another kind, the spoiler is around filigree or twist rod or other species spoilers, is set to activity
It is placed in exhaust gases passes.
Improved as another kind, one group of stud is distributed on the developed surface of middle dielectric layer into matrix form, and phase
Adjacent rows spacing increases from bottom to top;Preferably, adjacent line space forms arithmetic progression from bottom to top.
Improved as another kind, the inner drum layer is high temperature resistant, anticorrosion, the metal material passage of high thermal conductivity, and it is pushed up
Portion is provided with the first expansion joint.
As another kind improve, the outer tube wall be high temperature resistant, anticorrosion, the metal material passage of high thermal conductivity, wherein
Portion is provided with the second expansion joint;Its underpart is provided with technique aperture.
Improved as another kind, the length of the stud is identical with the thickness of middle dielectric layer, and stud is provided with screw thread, increases
The frictional force for having added solid dielectric layer outwards to slide.
Improved as another kind, in addition to the temperature sensor of interlocked control and the first valve, the second valve;The temperature
Sensor is located at the entrance of exhaust gases passes, and on Heating medium, second valve goes out first valve located at heating agent
On mouth;The temperature sensor is connected with the first valve, the second valve and outputs signal to the first valve, second valve this practicality
New to additionally provide a kind of coke oven coke oven uprising tube raw coke oven gas waste heat recovery generating device including above-mentioned takes thermal.
As an improvement, set including waste heat boiler, heat medium pump, steam turbine, water pump, generator and one group of multipoint-parallel
Coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes thermal;Waste heat boiler includes hot coal pipeline and steam/water circulating pipeline;The multiple spot
The coke oven coke oven uprising tube raw coke oven gas waste heat recovery being arranged in parallel takes the heating agent of thermal to export hot coal pipeline, heating agent with waste heat boiler
Pump is sequentially connected, and heat medium pump takes the Heating medium of thermal to be connected with each coke oven coke oven uprising tube raw coke oven gas waste heat recovery;The waste heat
Steam/water circulating pipeline, steam turbine and the water pump of boiler are sequentially connected cyclization;The generator is connected with steam turbine.
Improved as another kind, including distributed ascending tube crude-gas evaporator group, distributed ascending tube crude-gas overheat
Device group, drum, circulating pump, steam turbine, feed pump and generator;The distributed ascending tube crude-gas evaporator group and distribution
Ascending tube crude-gas superheater group independently take heat including one group of coke oven coke oven uprising tube raw coke oven gas waste heat recovery being arranged in parallel
Device;The drum is provided with steam water interface import, saturated vapor outlet conduit, water inlet, delivery port;In the distribution
The steam water interface import connection of riser raw coke oven gas evaporator group and drum;The saturated vapor outlet conduit of the drum, distribution
Formula ascending tube crude-gas superheater group, steam turbine, feed pump, the water inlet of drum are sequentially connected;The delivery port of the drum and
Circulating pump is connected, and the circulating pump is connected with distributed ascending tube crude-gas evaporator group;The generator is connected with steam turbine.
Also include water pipe, the water pipe is connected between steam turbine and feed pump.
Beneficial effect:Recovery provided by the utility model takes thermal simple in construction, transformation convenience, cost cheap, passes through
Middle dielectric layer in stud fixing device, the inner drum layer outer wall of itself and raw coke oven gas circulation is set to be connected, the screw thread on stud
The frictional force that solid dielectric layer outwards slides is added, in use not by expansion effects caused by high temperature, between the two
Gap is not produced, does not increase the thermal contact resistance of heat transfer, remains higher heat transfer property.
The device is internally provided with stud in middle dielectric layer, and stud is metal material, consistent with inner tube wall material, length
Welded perpendicular to drum outer wall, one end with inner tank theca in direction;Middle dielectric layer is liquid in cast, and stud plays the work of skeleton
With;When tedge is run, because stud is identical with inner tube wall material, weld together, operating temperature is essentially identical, thus has
There is identical swell increment;And the expansion of solid dielectric layer and inner tube wall it is inconsistent when, the screw thread on stud adds solid dielectric
The frictional force that layer outwards slides, so that stud plays a part of fixed solid dielectric layer, the screw thread of appearance hinders solid dielectric
The deviation of layer in the radial direction so that solid dielectric layer is remained with inner tube wall and closely contacted, and will not produce gap.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes thermal;
Fig. 2 is the partial enlarged drawing that the utility model coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes thermal;
Fig. 3 be stud on the developed surface of middle dielectric layer into matrix form distribution map;
Fig. 4 is the structural representation of the coke oven coke oven uprising tube raw coke oven gas waste heat recovery generating device of embodiment 2;.
Fig. 5 is the structural representation of the coke oven coke oven uprising tube raw coke oven gas waste heat recovery generating device of embodiment 3.
Embodiment
The utility model is further illustrated below.
Embodiment 1
Coke oven coke oven uprising tube raw coke oven gas waste heat recovery takes thermal, sees Fig. 1 and 2, including exhaust gases passes 1 and heat exchanger tube 2;Heat exchange
Pipe 2 includes stud 8 and the nanometer black matrix layer 3, inner drum layer 4, middle dielectric layer 5, the heat insulation protecting layer 6 that set gradually from outer to inner
With outer tube wall 7;The one end of stud 8 is fixed on the outer wall of inner drum layer 4, and the other end is located inside middle dielectric layer 5;The spiral of heat exchanger tube 2
It is arranged in middle dielectric layer 5, its Heating medium 9 is located at the bottom of outer tube wall 7 of exhaust gases passes 1, and its heating agent outlet 10 is located at cigarette
The top of outer tube wall 7 of gas passage 1.Also include the valve 14 of temperature sensor 13 and first, the second valve 15 of interlocked control;Temperature
Sensor 13 is located at the entrance of exhaust gases passes 1, and on Heating medium 9, the second valve 15 goes out the first valve 14 located at heating agent
On mouth 10;Temperature sensor 13 is connected with the first valve 14, the second valve 15 and outputs signal to the first valve 14, the second valve
15。
The inwall of exhaust gases passes 1 is provided with one group of straight fins or ailhead 11;Spoiler 12 is movably equipped with exhaust gases passes 1.Disturb
It is around filigree or twist rod or other species spoilers to flow part 12, is arranged to activity in exhaust gases passes 1.
Inner drum layer 4 is high temperature resistant, anticorrosion, the metal material passage of high thermal conductivity, and its top is provided with the first expansion joint 16.
Outer tube wall 7 is high temperature resistant, anticorrosion, the metal material passage of high thermal conductivity, and its middle part is provided with the second expansion joint 17;
Its underpart is provided with technique aperture 18.
One group of stud 8 is distributed on the developed surface of middle dielectric layer 5 into matrix form, sees Fig. 3, and adjacent line space is under
And upper increase;It may be preferred that adjacent line space forms arithmetic progression from bottom to top;The length of stud 8 and the thickness of middle dielectric layer 5
Spend identical.The distribution of stud is different in tedge short transverse density according to operating temperature:Lower end is due to operating temperature phase
To higher, swell increment is larger, and stud distribution is closeer;Because operating temperature is relatively low, swell increment is smaller for upper end, stud distribution compared with
Dredge.And on the circumferencial direction of sustained height, then it is assumed that operating temperature is basically identical, thus is evenly distributed.
Embodiment 2
Coke oven coke oven uprising tube raw coke oven gas waste heat recovery generating device, see Fig. 4, including waste heat boiler 32, heat medium pump 33, steam turbine
34th, the coke oven coke oven uprising tube raw coke oven gas waste heat recovery that water pump 35, generator 36 and one group of multipoint-parallel are set takes thermal 31;It is remaining
Heat boiler 32 includes hot coal pipeline and steam/water circulating pipeline;The coke oven coke oven uprising tube raw coke oven gas waste heat recovery that multipoint-parallel is set takes heat
The heating agent outlet 10 of device 31 and hot coal pipeline, the heat medium pump 33 of waste heat boiler 32 are sequentially connected, on heat medium pump 33 and each coke oven
Riser raw coke oven gas waste heat recovery takes the Heating medium 9 of thermal 31 to connect;Steam/water circulating pipeline, the steam turbine of waste heat boiler 32
34 and water pump 35 be sequentially connected cyclization;Generator 36 is connected with steam turbine 34.
Embodiment 3
Coke oven coke oven uprising tube raw coke oven gas waste heat recovery generating device, see Fig. 5, including distributed ascending tube crude-gas evaporator group
41st, distributed ascending tube crude-gas superheater group 42, drum 44, circulating pump 45, steam turbine 46, feed pump 47 and generator 48;
Distributed ascending tube crude-gas evaporator group 41 and distributed ascending tube crude-gas superheater group 42 independently include one group
The coke oven coke oven uprising tube raw coke oven gas waste heat recovery being arranged in parallel takes thermal 43;Drum 44 is provided with steam water interface import, saturation
Steam (vapor) outlet pipeline, water inlet, delivery port;Distributed ascending tube crude-gas evaporator group 41 and the steam water interface of drum 44
Import connects;The saturated vapor outlet conduit of drum 44, distributed ascending tube crude-gas superheater group 42, steam turbine 46, feedwater
Pump 47, the water inlet of drum 44 are sequentially connected;The delivery port and circulating pump 45 of drum 44 connect, and circulating pump 45 rises with distributed
Pipe raw coke oven gas evaporator group 41 connects;Generator 48 is connected with steam turbine 46.Also include water pipe 49, water pipe 49 connects
Between steam turbine 46 and feed pump 47.