CN110159927A - A kind of steam tracing system of intelligent control - Google Patents
A kind of steam tracing system of intelligent control Download PDFInfo
- Publication number
- CN110159927A CN110159927A CN201910464323.9A CN201910464323A CN110159927A CN 110159927 A CN110159927 A CN 110159927A CN 201910464323 A CN201910464323 A CN 201910464323A CN 110159927 A CN110159927 A CN 110159927A
- Authority
- CN
- China
- Prior art keywords
- steam
- temperature
- heat tracing
- temperature sensor
- threshold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/18—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pipeline Systems (AREA)
Abstract
A kind of steam tracing system of intelligent control, is related to petrochemical industry, including steam distributor, it is with multiple steam (vapor) outlets, each steam (vapor) outlet connects a heat tracing pipe, and each steam (vapor) outlet is provided with a motor-driven valve, for adjusting the steam flow of heat tracing pipe；Control system is provided with a temperature sensor it includes control centre and multiple temperature sensors on each material device by heat tracing pipe heat tracing, each temperature sensor is connected with control centre, for temperature signal to be transmitted to the control centre；The control centre is separately connected all motor-driven valves, for automatically adjusting corresponding motor-driven valve according to the temperature signal received.The present invention can be realized the automatic control of steam tracing system, so that steam utilization is more efficient, greatly reduce the waste of the energy.
Description
Technical field
The present invention relates to petrochemical industry, specially a kind of steam tracing system of intelligent control.
Background technique
In recent years, steam tracing system is widely used in petrochemical industry, be mainly used for making petroleum residue, tar and
When the materials such as wax flow in the duct, liquid condition is kept, is not to solidify.In practical applications, usually by high heat
Steam pipe and material pipe be wrapped in same insulation cladding, by heat conversion maintain the medium in material pipe centainly
Temperature, guarantee medium be in liquid condition, have circulation.
In existing technology, tracing steam is greatly mostly from boiler and the refining and petrochemical processing units of steaming.And oil-refining chemical fills
The tracing steam set in addition to inspecting state, would not be interrupted once coming into operation.But in normal productive process, the overwhelming majority is buried
If medium temperature is much higher than its condensation point in the material pipe of steam tracing pipeline, within a very long time, does not have to steam, be situated between
Matter is also able to maintain in liquid condition, such as reduced crude, decompression residuum, decompressed wax oil；In part refining and petrochemical processing units or pipeline section
Medium temperature be even higher than the temperature of tracing steam, tracing steam becomes the cold medium for taking heat, such as catalytic cycle oil at this time
Slurry etc.；Above-mentioned two situations, it is continual to use steam, cause the significant wastage of energy.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of steam tracing systems of intelligent control
System, can be realized the automatic control of steam tracing system, so that steam utilization is more efficient, greatly reduces the waste of the energy.
To achieve the above objectives, it adopts the technical scheme that: a kind of steam tracing system of intelligent control, including steam point
Orchestration, with multiple steam (vapor) outlets, each steam (vapor) outlet connects a heat tracing pipe, and each steam (vapor) outlet is provided with one
Motor-driven valve, for adjusting the steam flow of heat tracing pipe；Control system, it includes control centre and multiple temperature sensors, often
Be provided with a temperature sensor on a material device by heat tracing pipe heat tracing, each temperature sensor with control centre's phase
Even, for temperature signal to be transmitted to the control centre；The control centre is separately connected all motor-driven valves, connects for basis
The temperature signal received automatically adjusts corresponding motor-driven valve.
Preferably, the material device includes equipment and material pipe, and the temperature sensor is set to material pipe
Tail end.
Preferably, each temperature sensor is respectively arranged with first threshold, the first threshold of each temperature sensor
Higher than the medium freezing point in material device where it；When the temperature of temperature sensor measurement is less than first threshold, in control
The corresponding motor-driven valve of the heat tracing pipe of the material device heat tracing is opened in heart control.
Preferably, the temperature sensor is additionally provided with second threshold, and the second threshold is greater than first threshold；Work as temperature
When the temperature of sensor measurement is greater than second threshold, control centre's control is corresponding electronic to the heat tracing pipe of the material device heat tracing
Valve is closed.
Preferably, when the temperature of temperature sensor measurement is greater than first threshold and is less than second threshold, control centre's root
According to the temperature signal of temperature sensor measurement, control is tuned up or is adjusted to the corresponding motor-driven valve of heat tracing pipe of the material device heat tracing
It is small.
Preferably, each temperature sensor is provided with best fluid temperature (F.T.) also according to the medium in material device, works as temperature
When the temperature of sensor measurement is greater than first threshold and is less than second threshold, if it is greater than best fluid temperature (F.T.), turn down to the object
Expect the corresponding motor-driven valve of heat tracing pipe of device heat tracing；If it is less than best fluid temperature (F.T.), the companion to the material device heat tracing is tuned up
The corresponding motor-driven valve of heat pipe.
Preferably, the steam distributor is also equipped with temperature sensor, for measuring the initial temperature of steam.
Preferably, the steam tracing system is additionally provided with recycling of condensed steam system, the end of all heat tracing pipes with
Recycling of condensed steam system is connected.
Preferably, the steam tracing system is additionally provided with heating system, and the heating system is connected with steam distributor.
Preferably, the steam inlet of the steam distributor with steam boiler or refining and petrochemical processing units are connected.
The invention has the benefit that
1, steam tracing system of the invention, each steam (vapor) outlet of steam distributor are provided with a motor-driven valve,
The motor-driven valve can control the steam flow of heat tracing tube inlet；One is provided on each material device by heat tracing pipe heat tracing
A temperature sensor, the temperature sensor can measure the temperature of material device；And temperature sensor and motor-driven valve with control
Center is connected；Control centre can automatically adjust corresponding motor-driven valve according to the temperature signal of temperature sensor measurement；Compared to
Existing continual steam tracing, steam tracing system of the invention realize intelligentized control method, so that the utilization of steam is more
It is efficient and rational, greatly reduce the waste of the energy.
2, in steam tracing system of the invention, temperature sensor is provided with first threshold, second threshold and best stream
Temperature, when the temperature of temperature sensor measurement is less than first threshold, control centre controls the motor-driven valve of corresponding heat tracing pipe certainly
It is dynamic to open；When the temperature of temperature sensor measurement is greater than second threshold, the motor-driven valve that control centre controls corresponding heat tracing pipe is closed
It closes；When the temperature of temperature sensor measurement is greater than best fluid temperature (F.T.), turn down corresponding to the heat tracing pipe of the material device heat tracing
Motor-driven valve, reduce the waste of unnecessary energy；When the temperature of temperature sensor measurement is less than best fluid temperature (F.T.), tune up pair
The corresponding motor-driven valve of heat tracing pipe of the material device heat tracing, to guarantee that the media flow performance in material device is good；It is above-mentioned to set
Setting can be rationally efficient to adjust motor-driven valve according to the material unit temp of temperature sensor measurement, is guaranteeing in material device
Media flow performance it is good under the premise of, greatly reduce the waste of unnecessary energy.
3, steam tracing system of the invention is provided with heating system, when supply exceed demand for the steam of steam tracing system
When, heating system can be opened, heat utilization rate is increased.
4, steam tracing system of the invention is additionally provided with recycling of condensed steam system, and the steam in all heat tracing pipes arrives
Up to after heat tracing pipe end, recycling of condensed steam system is flowed to, steam is by recycling of condensed steam system condensing Cheng Shui, energy-saving
Water.
Detailed description of the invention
Fig. 1 is the flow chart of the embodiment of the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of steam tracing system of intelligent control, including steam distributor and control system, steam point
Orchestration has multiple steam (vapor) outlets, and each steam (vapor) outlet connects a heat tracing pipe, and each steam (vapor) outlet is provided with an electricity
Dynamic valve, for adjusting the steam flow of heat tracing pipe.
Control system includes control centre and multiple temperature sensors, on each material device by heat tracing pipe heat tracing
It is provided with a temperature sensor, each temperature sensor is connected with control centre, for temperature signal to be transmitted to control
Center；Control centre is separately connected all motor-driven valves, for automatically adjusting corresponding motor-driven valve according to the temperature signal received.
Specifically, every heat tracing pipe is embedded on the outside of material device, and heat tracing pipe prolongs the length direction arrangement of material device, heat tracing pipe
Outer surface and the outer surface of material device fit closely, and the two is wrapped in same insulation cladding.
In the present embodiment, each temperature sensor is respectively arranged with first threshold, the first threshold of each temperature sensor
Medium freezing point where value is higher than it in material device；When the temperature of temperature sensor measurement is less than first threshold, control
The corresponding motor-driven valve of the heat tracing pipe of the material device heat tracing is opened in center control.The setting of first threshold can guarantee that material fills
Medium in setting is constantly in liquid condition, which is mainly used for heat tracing pipe opening from off working state to working condition automatically
It is dynamic.
In the present embodiment, temperature sensor is additionally provided with second threshold, and second threshold is greater than first threshold；When temperature passes
When the temperature of sensor measurement is greater than second threshold, control centre controls the corresponding motor-driven valve of heat tracing pipe to the material device heat tracing
It closes.When the medium temperature in material device is very high, especially higher than the vapor (steam) temperature of heat tracing pipe when, in material device
All temperature is higher during the entire process of flowing and is in liquid for medium, and steam tracing at this time seems extra, closes corresponding heat tracing
The motor-driven valve of pipe can reduce energy consumption.
Preferably, when the temperature of temperature sensor measurement is greater than first threshold and is less than second threshold, control centre's root
According to the temperature signal of temperature sensor measurement, control is tuned up or is adjusted to the corresponding motor-driven valve of heat tracing pipe of the material device heat tracing
It is small.
Specifically, each temperature sensor is provided with best fluid temperature (F.T.) also according to the medium in material device, is greater than
First threshold and be less than second threshold, the best fluid temperature (F.T.) guarantee media flow performance it is good under the premise of, reduce to the greatest extent
The waste of energy.In a practical situation, best fluid temperature (F.T.) is obtained according to the performance of medium by experiment.When temperature sensor is surveyed
When fixed temperature is greater than first threshold and is less than second threshold, if it is greater than best fluid temperature (F.T.), turn down to material device companion
The corresponding motor-driven valve of heat tracing pipe of heat, reduces the waste of unnecessary energy；When the temperature of temperature sensor measurement is greater than the first threshold
When being worth and being less than second threshold, if it is less than best fluid temperature (F.T.), the corresponding electricity of heat tracing pipe to the material device heat tracing is tuned up
Dynamic valve, to guarantee that the media flow performance in material device is good.
Specifically, material device includes equipment and material pipe, equipment refer to being embedded with heat tracing pipe and transport residual oil and
The equipment in Oil Refining of wax oil etc. medium, material pipe refer to being embedded with heat tracing pipe and transport residual oil and wax oil etc. medium
Pipeline.
In the present embodiment, when material device is material pipe, each temperature sensor is mounted on respective materail tube
The tail end in road, since the medium of materail tube is during flowing, what when medium temperature constantly reduced, therefore by each temperature sensing
Device is installed on the tail end of respective material pipe, that is, can measure the minimum temperature of medium in material pipe；When the minimum temperature is in
Suitable numerical value, then the medium temperature of rest part materail tube is also at suitable numerical value.When material device is equipment, equipment
It is divided into beginning and tail end according to the flow direction of medium；Similarly, temperature sensor is set to the tail end of equipment.
In a further embodiment, temperature sensor also may be mounted at the other positions of material pipe, need root at this time
Cooling numerical value that every meter of materail tube is calculated according to experience, further according to the tail end of temperature sensor position and material pipe away from
From estimating and suitable first threshold and second threshold be provided.
Preferably, steam distributor is also equipped with temperature sensor, for measuring the initial temperature of steam, in order to more preferable
Set temperature sensor first threshold and second threshold.
Preferably, steam tracing system is additionally provided with recycling of condensed steam system, and the end of all heat tracing pipes is and steam
Condensate recovery system is connected, and steam, can be with energy-saving and water-saving by recycling of condensed steam system condensing Cheng Shui.
Preferably, steam tracing system is additionally provided with heating system, and heating system is connected with steam distributor, works as steam heat
The steam of system can open heating system, increase heat utilization rate when supply exceed demand.
Preferably, the steam inlet of steam distributor with steam boiler or refining and petrochemical processing units are connected.
Preferably, heat tracing pipe uses seamless carbon steel tube.
The working principle of the embodiment of the present invention are as follows:
Steam is split into a plurality of steam line by steam distributor, and every steam line includes a motor-driven valve and one
Heat tracing pipe.
In every steam line, steam enters in heat tracing pipe by motor-driven valve, and heat tracing pipe, which fits closely, is set to correspondence
Material device outside, carry out heat exchange with the medium in material device when steam flows through heat tracing pipe, make the medium in material device
It is constantly in liquid condition.
Each material device is provided with a temperature sensor, the temperature of temperature sensor measurement material device, and incites somebody to action
Temperature signal passes to control centre.Control centre automatically adjusts corresponding motor-driven valve according to the temperature signal received.
Specifically, temperature sensor is provided with first threshold, second threshold and best fluid temperature (F.T.).
When the temperature of the temperature sensor measurement of some material device is less than its first threshold, control centre is controlled to this
The corresponding motor-driven valve of the heat tracing pipe of material device heat tracing is opened.
When the temperature of the temperature sensor measurement of some material device is greater than second threshold, control centre is controlled to the object
Expect that the corresponding motor-driven valve of the heat tracing pipe of device heat tracing is closed.
When the temperature of the temperature sensor measurement of some material device is greater than best fluid temperature (F.T.), turns down and the material is filled
The corresponding motor-driven valve of heat tracing pipe for setting heat tracing, reduces the waste of unnecessary energy；When the temperature of temperature sensor measurement is less than most
When good fluid temperature (F.T.), the corresponding motor-driven valve of heat tracing pipe to the material device heat tracing is tuned up, to guarantee the medium in material device
Mobile performance is good.
In addition, the steam in heat tracing pipe flow through material device reach heat tracing pipe end after, the end of all heat tracing pipes with
Recycling of condensed steam system is connected, and steam is by recycling of condensed steam system condensing Cheng Shui, energy-saving and water-saving.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of steam tracing system of intelligent control characterized by comprising
Steam distributor, with multiple steam (vapor) outlets, each steam (vapor) outlet connects a heat tracing pipe, and each steam (vapor) outlet is equal
It is provided with a motor-driven valve, for adjusting the steam flow of heat tracing pipe；
Control system, it includes control centre and multiple temperature sensors, on each material device by heat tracing pipe heat tracing
It is provided with a temperature sensor, each temperature sensor is connected with control centre, described for temperature signal to be transmitted to
Control centre；The control centre is separately connected all motor-driven valves, for being corresponded to according to the temperature signal automatic adjustment received
Motor-driven valve.
2. a kind of steam tracing system of intelligent control as described in claim 1, it is characterised in that: the material device includes
Equipment and material pipe, and the temperature sensor is set to the tail end of material pipe.
3. a kind of steam tracing system of intelligent control as described in claim 1, it is characterised in that: each temperature sensing
Device is respectively arranged with first threshold, the medium solidification where the first threshold of each temperature sensor is higher than it in material device
Point；When the temperature of temperature sensor measurement is less than first threshold, control centre controls the heat tracing pipe to the material device heat tracing
Corresponding motor-driven valve is opened.
4. a kind of steam tracing system of intelligent control as claimed in claim 3, it is characterised in that: the temperature sensor is also
It is provided with second threshold, the second threshold is greater than first threshold；When the temperature of temperature sensor measurement is greater than second threshold,
The corresponding motor-driven valve of the heat tracing pipe of the material device heat tracing is closed in control centre's control.
5. a kind of steam tracing system of intelligent control as claimed in claim 4, it is characterised in that: work as temperature sensor measurement
Temperature when being greater than first threshold and being less than second threshold, control centre is according to the temperature signal of temperature sensor measurement, control
The corresponding motor-driven valve of heat tracing pipe of the material device heat tracing is tuned up or turned down.
6. a kind of steam tracing system of intelligent control as claimed in claim 5, it is characterised in that: each temperature sensor is also
Medium in material device is provided with best fluid temperature (F.T.), when the temperature of temperature sensor measurement is greater than first threshold and small
When second threshold, if it is greater than best fluid temperature (F.T.), the corresponding motor-driven valve of heat tracing pipe to the material device heat tracing is turned down；Such as
Fruit is less than best fluid temperature (F.T.), tunes up the corresponding motor-driven valve of heat tracing pipe to the material device heat tracing.
7. a kind of steam tracing system of intelligent control as described in claim 1, it is characterised in that: the steam distributor is also
Temperature sensor is installed, for measuring the initial temperature of steam.
8. a kind of steam tracing system of intelligent control as described in claim 1, it is characterised in that: the steam tracing system
It is additionally provided with recycling of condensed steam system, the end of all heat tracing pipes is connected with recycling of condensed steam system.
9. a kind of steam tracing system of intelligent control as described in claim 1, it is characterised in that: the steam tracing system
It is additionally provided with heating system, the heating system is connected with steam distributor.
10. a kind of steam tracing system of intelligent control as described in any one of claims 1-9, it is characterised in that: described
The steam inlet of steam distributor with steam boiler or refining and petrochemical processing units are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910464323.9A CN110159927A (en) | 2019-05-30 | 2019-05-30 | A kind of steam tracing system of intelligent control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910464323.9A CN110159927A (en) | 2019-05-30 | 2019-05-30 | A kind of steam tracing system of intelligent control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110159927A true CN110159927A (en) | 2019-08-23 |
Family
ID=67630461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910464323.9A Pending CN110159927A (en) | 2019-05-30 | 2019-05-30 | A kind of steam tracing system of intelligent control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110159927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728413A (en) * | 2020-12-25 | 2021-04-30 | 武汉联德化学品有限公司 | Temperature loss protection system and method for liquid phosphorus conveying pipeline |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167987A (en) * | 1980-05-30 | 1981-12-23 | Idemitsu Kosan Co | Steam tracing method |
| CN201335372Y (en) * | 2008-10-24 | 2009-10-28 | 华东师范大学 | Condensed water recovery device of steam system |
| CN202063765U (en) * | 2011-04-21 | 2011-12-07 | 陈凯华 | Aeration-tank steam-heating device |
| CN203240276U (en) * | 2013-03-01 | 2013-10-16 | 中国石油天然气股份有限公司 | Self-control type efficient energy-saving heat tracing system |
| CN103759857A (en) * | 2014-01-23 | 2014-04-30 | 北京鑫雅图科贸有限公司 | Material pipeline tracing heat on-line monitoring system |
| CN203703621U (en) * | 2014-02-28 | 2014-07-09 | 珠海裕田化工制品有限公司 | Polyhydric alcohol steam heat tracing system |
| CN204785565U (en) * | 2015-03-26 | 2015-11-18 | 赛鼎工程有限公司 | Steam heat tracing device of dimethyl carbonate pipeline on outer piping lane |
| CN206300740U (en) * | 2016-12-16 | 2017-07-04 | 青岛港国际股份有限公司 | Harbour heating power energy monitoring system |
| CN107575748A (en) * | 2017-09-13 | 2018-01-12 | 山东钢铁股份有限公司 | Steam tracing device |
| CN207661427U (en) * | 2017-09-30 | 2018-07-27 | 克拉玛依市创铭石油科技有限公司 | The more well head steam gathering and transporting devices in oil field |
-
2019
- 2019-05-30 CN CN201910464323.9A patent/CN110159927A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167987A (en) * | 1980-05-30 | 1981-12-23 | Idemitsu Kosan Co | Steam tracing method |
| CN201335372Y (en) * | 2008-10-24 | 2009-10-28 | 华东师范大学 | Condensed water recovery device of steam system |
| CN202063765U (en) * | 2011-04-21 | 2011-12-07 | 陈凯华 | Aeration-tank steam-heating device |
| CN203240276U (en) * | 2013-03-01 | 2013-10-16 | 中国石油天然气股份有限公司 | Self-control type efficient energy-saving heat tracing system |
| CN103759857A (en) * | 2014-01-23 | 2014-04-30 | 北京鑫雅图科贸有限公司 | Material pipeline tracing heat on-line monitoring system |
| CN203703621U (en) * | 2014-02-28 | 2014-07-09 | 珠海裕田化工制品有限公司 | Polyhydric alcohol steam heat tracing system |
| CN204785565U (en) * | 2015-03-26 | 2015-11-18 | 赛鼎工程有限公司 | Steam heat tracing device of dimethyl carbonate pipeline on outer piping lane |
| CN206300740U (en) * | 2016-12-16 | 2017-07-04 | 青岛港国际股份有限公司 | Harbour heating power energy monitoring system |
| CN107575748A (en) * | 2017-09-13 | 2018-01-12 | 山东钢铁股份有限公司 | Steam tracing device |
| CN207661427U (en) * | 2017-09-30 | 2018-07-27 | 克拉玛依市创铭石油科技有限公司 | The more well head steam gathering and transporting devices in oil field |
Non-Patent Citations (1)
| Title |
|---|
| 全国安全生产教育培训教材编审委员会等: "《烷基化工艺作业》", 30 April 2013, 中国矿业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728413A (en) * | 2020-12-25 | 2021-04-30 | 武汉联德化学品有限公司 | Temperature loss protection system and method for liquid phosphorus conveying pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104785466A (en) | Automatic online cleaning system and method of intelligent circulating cooling water heat exchanger | |
| CN105605965A (en) | Automatic online cleaning system and method for self-adapting circulating cooling water heat exchanger | |
| CN110159927A (en) | A kind of steam tracing system of intelligent control | |
| CN207501734U (en) | A kind of temperature control system of heat-exchanger rig heat medium | |
| CN204154563U (en) | PTA Equipment oxidation reaction tail gas on-line checkingi sample gas pretreating system | |
| CN110332842B (en) | Coking circulating ammonia water self-cleaning parallel heat taking device and operation control method thereof | |
| CN208000060U (en) | A kind of condensing plant for cooling down high-temperature gas | |
| CN205154275U (en) | Exhaust steam recovery system | |
| CN201100503Y (en) | An energy-saving concretion prevention structure for oil supply tube | |
| CN104436722A (en) | Concentration system and concentration method applied to extraction process of isoleucine | |
| CN209214147U (en) | A kind of thermostatic medium feedway | |
| CN208397528U (en) | A kind of microbiological culture media pipe heating device | |
| CN105886679A (en) | System and method for producing water vapor by blast furnace slag | |
| CN203395200U (en) | Steam heat-preservation blasting gas butterfly valve with linear sealing structure | |
| CN208254250U (en) | A kind of waste heat of coke oven combined recovery system of automobile | |
| CN104019360B (en) | Self-control energy-saving heat tracing system | |
| CN112452563A (en) | Method and device for reducing material accumulation of discharge hopper of centrifugal machine | |
| CN105953298A (en) | High-efficient heat-storage tank semitrailer | |
| CN206553241U (en) | The water treatment facilities of water are efficiently produced under a kind of low temperature environment | |
| CN205151815U (en) | Steam grading system | |
| CN207345214U (en) | A kind of Multifunctional centralized water box and cooling damping roller return water system | |
| CN202762420U (en) | Condensed water supply system | |
| CN211635781U (en) | Steam water trap | |
| CN204534540U (en) | For the raw water heater steam drainage recovery device of boiler feed water system | |
| CN204534511U (en) | A kind of heat accumulating type steam generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190823 |