CN205473862U - Hot -blast furnace coal gas turbocharging system - Google Patents
Hot -blast furnace coal gas turbocharging system Download PDFInfo
- Publication number
- CN205473862U CN205473862U CN201620317100.1U CN201620317100U CN205473862U CN 205473862 U CN205473862 U CN 205473862U CN 201620317100 U CN201620317100 U CN 201620317100U CN 205473862 U CN205473862 U CN 205473862U
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- pressure
- gas
- trt
- air stove
- valve
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Abstract
The utility model discloses a hot -blast furnace coal gas turbocharging system mainly can not provide the problem of suitable coal gas pressure for the hot -blast furnace to the gaspipe network under the prior art, provided a hot -blast furnace coal gas turbocharging system, include TRT facility export gas piping and hot -blast furnace gas piping with outside coal gas main pipe net intercommunication, TRT facility export gas piping and hot -blast furnace gas piping pass through the by pass line intercommunication, be provided with pressure regulating valve on the TRT export gas piping, set up pressure measuring equipment on the by pass line, pressure regulating valve with the pressure measuring equipment interlocking, wherein, the entry of by pass line with pressure regulating valve sets gradually along TRT export gas piping's airflow direction. The utility model discloses can improve the coal gas pressure of hot -blast furnace to the system is simple, and safe and reliable, strong, the maintenance convenience of commonality can not exert an influence to original facility.
Description
Technical field
This utility model relates to a kind of air stove coal gas pressure charging system.
Background technology
At present, Ironmaking Design must actively carry out the theory of sustainable development and recycling economy, to greatest extent
Energy-saving and cost-reducing.Air stove is the big power consumer of steel plant, improves the thermal efficiency of air stove, reduces fuel consumption,
Improve hot blast temperature, be the important component part of ironmaking technology.Blast funnace hot blast stove typically utilizes self-produced blast furnace
Coal gas does fuel, and consumption accounts for the 40～45% of self produced gas.Reasonably the design of air stove structure, the most excellent
Change Regenerator Structure and rational bricking, to save blast furnace gas, are to reduce process energy consumption, establishing resource saving
The important means of type enterprise.The commonly used regenerative hot blast stove of air stove, the high temperature produced by gas-fired
Checker brick in regenerator are heated by flue gas, then change stove on air by the checker brick heated by cold air heating.
In view of heat transfer and accumulation of heat, the structure of current checker brick has the trend become increasingly complex, 5 holes that the past is conventional
Or 7 hole checker brick have developed into the cellular checker brick such as hole, 19 holes even 37, to increase changing of heat storage
Hot side amass, and the flow velocity that flue gas to be ensured and air blast are in passage at turbulent range to improve the thermal efficiency, but with
Together be that air stove coal gas system resistance is greatly increased, gas pressure demand brings up to～15KPa.At present
The blast furnace quantity of domestic iron and steel enterprises is typically from several more to tens, and the pressure that coal gas system is incorporated into the power networks is
About 10KPa, because the use pressure of most of coal gas users is 6～8KPa, it is impossible to improve whole pipe
The operating pressure of net meets the requirement of air stove, thus affects the raising of Blast Temperature.
Utility model content
For the problems referred to above, this utility model provides a kind of system simple, can stablize and be effectively improved hot blast
The air stove coal gas pressure charging system of producer gas pressure.
For reaching above-mentioned purpose, this utility model air stove coal gas pressure charging system includes and outside gas main net
The TRT facility exit gas piping of connection and air stove gas piping；Described TRT facility exit gas piping
Connected by by-pass line with air stove gas piping, described TRT outlet gas piping is provided with pressure and adjusts
Joint valve, described by-pass line arranges pressure gauge, and described pressure-regulating valve fills with described pressure measxurement
Put interlocking；Wherein, entrance and the described pressure-regulating valve of described by-pass line exports gas piping along TRT
Airflow direction sets gradually.
Further, described bypass gas piping upward pressure measurement apparatus uses logic control three to select two.
Further, described air stove gas piping connects with outside gas main, described air stove gas pipe
Quick opening valve, described quick opening valve and TRT facility and the shutdown of pressure-regulating valve or fault letter it is provided with on road
Number interlocking；Wherein, the outlet of described quick opening valve and described by-pass line is along described air stove gas piping
Airflow direction sets gradually.
Further, described TRT facility exit gas piping is additionally provided with in parallel with described pressure-regulating valve
Quick opening valve, described quick opening valve and described TRT facility and the shutdown of pressure-regulating valve or fault-signal connection
Lock.
Further, the TRT facility exit gas piping in described pressure-regulating valve downstream is provided with outer net pressure
Force measuring device.
Further, described pressure-regulating valve is electric press regulation valve, pneumatic pressure-regulating valve or pressure of surging
Force regulating valve.
Further, described quck-opening valve is the quick opening valve that surges.
Further, described by-pass line arranges a set of partition apparatus.
Further, the end of described TRT facility exit gas piping is provided with grid-connected isolating valve, described heat
Wind furnace gas piping is connected with outside gas main net by air stove partition apparatus.
In this utility model technology, the coal gas of TRT facility exit is through regulator, will be equivalent to 40%～45%
Coal gas amount be importing directly into the gas entry of air stove, make the gas pressure of hot blast stove burning higher than outside coal gas
The pressure of net, this utility model can stably be effectively improved air stove gas pressure.
Compared with prior art, this utility model technology has the advantage that
This utility model system is simple, highly versatile, safe and reliable, easy to maintenance, will not to other facility
Produce impact.It is typically provided with isolating valve, especially before TRT facility exit pipeline is grid-connected with plant area's gas main
Be small furnace TRT unit be usually after build, be designed with before the grid-connected front press and open holes of TRT export pipeline every
Disconnected valve.Enforcement of the present utility model does not affect the normal supply of other external user.
With the technics comparing of traditional Gas Pressurization Station, the advantage of this utility model each side is especially apparent.By
Very big in the consumption of air stove coal gas, account for the 40%～45% of blast furnace gas generating capacity, newly-built Gas Pressurization Station
Disposable apparatus investment higher, the equipment operating cost in later stage is the highest, and place, air stove region is the most limited.
Especially it is to be noted that: the gas using quantity of air stove is very big, if forcing to bleed from outer net to cause outside
Gaspipe network pressure oscillation is relatively big, even makes neighbouring coal gas user paralyse.
This utility model reduced investment, take up an area less, economic benefit obvious, can be effectively improved and stable heating wind furnace
Gas pressure, this is the essential condition that Blast Temperature improves.The gas facility that this utility model increases is few,
Only just can be met blast furnace by pressure-regulating valve and one by bypass line to air stove after TRT facility hot
The pressure requirements that wind furnace is personal.Advocating the today setting up energy-efficient society and Economical Enterprises, this work energetically
The benefit that skill is brought is particularly evident.
Accompanying drawing explanation
Fig. 1 is the flow chart of this utility model air stove coal gas pressure charging system；
Detailed description of the invention
Below in conjunction with Figure of description, this utility model is further described.
Embodiment 1
As it is shown in figure 1, what the present embodiment air stove coal gas pressure charging system included connecting with outside gas main net
TRT facility exit gas piping 1 and air stove gas piping 2；Described TRT facility exit gas piping and
Air stove gas piping is connected by by-pass line 3, described TRT outlet gas piping is provided with pressure and adjusts
Joint valve 4, described by-pass line arranges pressure gauge 10, described pressure-regulating valve 4 and described pressure
Measurement apparatus 10 is interlocked；Wherein, entrance and the described pressure-regulating valve 4 of described by-pass line 3 goes out along TRT
The airflow direction of mouth gas piping sets gradually.
The present embodiment system is simple, highly versatile, safe and reliable, easy to maintenance, other facility will not be produced
Raw impact.It is typically provided with isolating valve, especially before TRT facility exit pipeline is grid-connected with plant area's gas main
The TRT unit of small furnace is built after being usually, and is designed with cutting off before the grid-connected front press and open holes of TRT export pipeline
Valve.The enforcement of the present embodiment does not affect the normal supply of other external user.
With the technics comparing of traditional Gas Pressurization Station, the advantage of the present embodiment each side is especially apparent.Due to
The consumption of air stove coal gas is very big, accounts for the 40%～45% of blast furnace gas generating capacity, newly-built Gas Pressurization Station
Disposable apparatus investment is higher, and the equipment operating cost in later stage is the highest, and place, air stove region is the most limited.
Especially it is to be noted that: the gas using quantity of air stove is very big, if forcing to bleed from outer net to cause outside
Gaspipe network pressure oscillation is relatively big, even makes neighbouring coal gas user paralyse.
The present embodiment reduced investment, take up an area less, economic benefit obvious, can be effectively improved and stable heating wind furnace coal
Atmospheric pressure, this is the essential condition that Blast Temperature improves.The gas facility that the present embodiment increases is few, the most logical
Overvoltage force regulating valve and one just can be met blast funnace hot blast stove by bypass line to air stove after TRT facility
Personal pressure requirements.Advocating the today setting up energy-efficient society and Economical Enterprises, this process bands energetically
The benefit come is particularly evident.
Embodiment 2
On the basis of above-described embodiment, bypass gas piping upward pressure measurement apparatus 10 described in the present embodiment and adopt
Two are selected with logic control three.
Logic control three selects two to be that a point takes three pressure signals feeding PLC, first to 3 pressure measuring values
Judging, regulation system is chosen correct pressure measuring value and the aperture of regulation valve is carried out PID regulation, carries
High pressure detecting reliability.
Embodiment 3
On the basis of above-described embodiment, as it is shown in figure 1, the present embodiment includes TRT facility exit gas pipe
Road 1, air stove gas piping 2 and the bypass gas piping 3 connected between the two.Described TRT exports coal gas
Pipeline 1 and air stove gas piping 2 all connect with outside gas main, on TRT outlet gas piping 1
It is provided with along air flow direction with secondary: the bypass entrance of gas piping 3, pressure-regulating valve 4, pressure gauge 5
And grid-connected front isolating valve, 6；Described air stove gas piping 2 is provided with along air flow direction with secondary: coal gas every
Disconnected device 7, quck-opening valve 8, the outlet of by-pass line 3 and hot blast stove system gas entry；At described bypass pipe
It is provided with along air flow direction with secondary on road 3: bypass gas piping partition apparatus 9, pressure gauge 10 (take
Pressure mouth is near air stove).
Pressure-regulating valve 4 on TRT outlet conduit 1 and the gas pressure on bypass gas piping 3 measure dress
Putting 10 interlockings, closed loop regulation hot wind supply producer gas pressure is in the numerical value needed～15KPa, described pressure measxurement
Device 10 have employed logic control three and selects two, is that a point takes three pressure signals feeding PLC, first to 3
Pressure measuring value judges, regulation system is chosen correct pressure measuring value and the aperture of regulation valve is carried out PID
Regulation, improves pressure detecting reliability.
On air stove gas piping, 2 are provided with partition apparatus 7, and the downstream of partition apparatus 7 is provided with quck-opening valve
8, described quick opening valve 8 and TRT facility and the shutdown of pressure-regulating valve 4 or fault-signal interlocking, to ensure
The safety of system.
Outer net pressure gauge 5 is utilized to detect the pressure of outside gas main.
Described pressure-regulating valve 4 can be selected for electronic, pneumatically or hydraulically；Described quick opening valve 8 is opened soon for surging
Valve, surge valve rapid sensitive, good stability, it is possible to provides TRT facility and hot blast stove system enough
Protection.
The present embodiment has taken into full account the links of production run, it is possible to realize air stove gas pressure
Automatically detect, control and regulate, and ensure that the operation safety of TRT and air stove.When TRT normally transports
During row, being automatically adjusted hot wind supply producer gas pressure by pressure-regulating valve 4 is～15KPa, at this moment quck-opening valve 8
Being closed, during as occurred that the low warning of pressure or pressure height are reported to the police, quck-opening valve 8 interlocking is opened, now
Pressure-regulating valve 4 standard-sized sheet also releases interlocking, and manual confirmation puts into operation after fixing a breakdown again；When TRT orderly closedown
Or during disorderly closedown, quck-opening valve 8 interlocking is opened, and changes by independent communication in the air stove gas piping 2 of outer net
Supply, now pressure-regulating valve 4 is interlocked standard-sized sheet.After TRT application startup optimization is normal, slowly close fast
Valve opening 8, simultaneously regulation valve 4 start to be automatically adjusted stable air stove gas pressure for～15KPa；When because of pressure regulation
Device frequent movement breaks down, and now quck-opening valve 8 is also interlocked and opened, and air stove is still by air stove gas pipe
Road 2 supplies.
In the present embodiment, air stove gaspipe line partition apparatus 7 and bypass line partition apparatus 9 keep normal
Open.When hot-blast furnace equipment overhauls, partition apparatus 7 and partition apparatus 9 are all closed；When pressure-regulating valve 4
Because of fault need stop the supple of gas or steam maintenance time, treat TRT planned shut-down and grid-connected isolating valve, 6 and bypass partition apparatus 9 all
Can overhaul during closedown.
Embodiment 4
On the basis of above-described embodiment 3, native system can adjust according to on-site actual situations, at technological transformation item
In mesh, as installing space in the downstream line of partition apparatus 7 on air stove gas piping 2 is limited, it is impossible to peace
During dress quck-opening valve 8, at this moment quck-opening valve 8 can be connected in parallel with pressure-regulating valve 4, is arranged in TRT and exports coal
In feed channel 1, quck-opening valve 8 herein is the most scalable for the adjustment type quck-opening valve that surges, and forms two-way regulation system
The gas pressure of stable heating wind furnace further.
The present embodiment is as different from Example 3: air stove gas piping partition apparatus 7 keeps the normally off, when
When TRT orderly closedown, disorderly closedown and pressure-regulating valve 4 fault, now in parallel with pressure-regulating valve 4
Quck-opening valve 8 interlocking is opened, and continues by bypass gaspipe line supply air stove.
When pressure-regulating valve 4 needs to stop the supple of gas or steam maintenance because of fault, need to wait for TRT planned shut-down and grid-connected partition
Valve 6 and bypass partition apparatus 9 can overhaul when all closing, but now air stove gas piping cuts off dress
Put 7 before quck-opening valve 8 cuts out manual unlocking, air stove changes and is supplied by air stove gas piping 2.
Above, preferred embodiment the most of the present utility model, but this protection domain is not limited thereto, and appoints
How those familiar with the art is in the technical scope that the present embodiment discloses, the change that can readily occur in
Change or replace, all should contain within the protection domain of the present embodiment.Therefore, the protection domain of the present embodiment
Should be as the criterion with the protection domain that claim is defined.
Claims (9)
1. an air stove coal gas pressure charging system, including the TRT facility exit connected with outside gas main net
Gas piping and air stove gas piping；It is characterized in that: described TRT facility exit gas piping and hot blast
Producer gas pipeline is connected by by-pass line, and described TRT outlet gas piping is provided with pressure-regulating valve,
Arranging pressure gauge on described by-pass line, described pressure-regulating valve is interlocked with described pressure gauge；
Wherein, entrance and the described pressure-regulating valve of described by-pass line exports the airflow direction of gas piping along TRT
Set gradually.
2. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described bypass gas pipe
Road upward pressure measurement apparatus uses logic control three to select two.
3. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described air stove coal gas
Pipeline connects with outside gas main, and described air stove gas piping is provided with quick opening valve, described opens soon
Valve and TRT facility and the shutdown of pressure-regulating valve or fault-signal interlocking；Wherein, described quick opening valve and
The outlet of described by-pass line sets gradually along the airflow direction of described air stove gas piping.
4. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described TRT facility goes out
It is additionally provided with the quick opening valve in parallel with described pressure-regulating valve, described quick opening valve and institute on mouth gas piping
State TRT facility and the shutdown of pressure-regulating valve or fault-signal interlocking.
5. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described pressure-regulating valve
It is provided with outer net pressure gauge on the TRT facility exit gas piping in downstream.
6. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described pressure regulates
Valve is electric press regulation valve, pneumatic pressure-regulating valve or hydraulic pressure regulation valve.
7. the air stove coal gas pressure charging system as described in claim 3 or 4, it is characterised in that: described open soon
Valve is the quick opening valve that surges.
8. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described by-pass line
On a set of partition apparatus is set.
9. air stove coal gas pressure charging system as claimed in claim 1, it is characterised in that: described TRT facility
The end of outlet gas piping is provided with grid-connected isolating valve, and described air stove gas piping is cut off by air stove
Device connects with outside gas main net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317100.1U CN205473862U (en) | 2016-04-14 | 2016-04-14 | Hot -blast furnace coal gas turbocharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317100.1U CN205473862U (en) | 2016-04-14 | 2016-04-14 | Hot -blast furnace coal gas turbocharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205473862U true CN205473862U (en) | 2016-08-17 |
Family
ID=56641053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620317100.1U Withdrawn - After Issue CN205473862U (en) | 2016-04-14 | 2016-04-14 | Hot -blast furnace coal gas turbocharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205473862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105671233A (en) * | 2016-04-14 | 2016-06-15 | 中冶华天工程技术有限公司 | Coal gas pressurizing system of hot-blast heater |
| CN109340580A (en) * | 2018-10-24 | 2019-02-15 | 宣城亚邦化工有限公司 | Coal gas superpressure safe release system |
-
2016
- 2016-04-14 CN CN201620317100.1U patent/CN205473862U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105671233A (en) * | 2016-04-14 | 2016-06-15 | 中冶华天工程技术有限公司 | Coal gas pressurizing system of hot-blast heater |
| CN109340580A (en) * | 2018-10-24 | 2019-02-15 | 宣城亚邦化工有限公司 | Coal gas superpressure safe release system |
| CN109340580B (en) * | 2018-10-24 | 2020-09-04 | 宣城亚邦化工有限公司 | Coal gas overpressure safety release system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20170609 |