Clean construction process for boiler unit of large coal-fired power plant

Abstract

The invention discloses a large coal-fired power plant boiler unit clean construction technology, and particularly relates to the field of coal-fired power plant boiler units, the large coal-fired power plant boiler unit clean construction technology comprises an unloading module which is particularly an unloading chamber and is used for unloading fire coal raw materials; the stirring module is specifically a stirring chamber and is used for stirring and crushing fire coal raw materials; the dust removal module is specifically dust removal equipment and is used for absorbing coal dust in the discharging chamber and the stirring chamber; the mounting module is specifically a mounting chamber and is used for mounting and assembling the boiler assembly; the boiler module is specifically a boiler chamber and is used for providing energy for combustion of fire coal raw materials for power generation; and the treatment module is specifically a treatment pond and is used for filtering wastewater generated by working of the boiler. A traditional extensive construction mode is abandoned, and an advanced closed dust collecting system is adopted. Efficient dust collection equipment is installed at all dust raising points of a construction site, such as a material loading and unloading area and a stirring area, dust generated in the construction process is collected in time, and it is avoided that the dust is diffused into the surrounding atmospheric environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal-fired power plant boiler units, more particularly, the present application relates to a large coal-fired power plant boiler unit cleaning construction process. BACKGROUND

[0002] In the global energy structure, coal as an important primary energy, occupies a key position in the field of power production. Bangladesh Boduakali 1320MW ultra-supercritical thermal power plant as the core facility of coal efficient conversion into electricity, its construction and operation is of great significance to ensure the energy supply of Bangladesh, promote the local economic development.

[0003] However, the traditional large coal-fired power plant boiler unit construction process has many drawbacks. From the construction environment point of view, in the construction process, a large amount of dust emission seriously pollutes the surrounding air, which threatens the health of construction personnel and the surrounding ecological environment. At the same time, if the construction wastewater is not effectively treated and directly discharged, it will pollute the soil and water, affect the surrounding agricultural production and domestic water safety. In terms of equipment installation and maintenance, the traditional construction process is difficult to guarantee the cleanliness of the internal equipment of the boiler unit. The impurities and pollutants remaining in the equipment will cause the equipment to wear out during the operation of the power plant, reducing the service life and operating efficiency of the equipment. This not only increases the maintenance cost, but also may cause safety hazards and affect the stable operation of the power plant.

[0004] With the increasingly stringent environmental protection requirements and the higher pursuit of power plant operating efficiency and stability, it is urgent to develop a process that can reduce pollutant emissions, guarantee equipment cleanliness, and realize green environmental protection and efficient construction. Under this background, the large coal-fired power plant boiler unit cleaning construction process emerges as the times require, aiming to solve the pain points of traditional construction process and promote the sustainable development of coal-fired power plant construction industry. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a large coal-fired power plant boiler unit cleaning construction process, which discards the traditional extensive construction method and adopts an advanced closed dust collection system. At each dust point in the construction site, such as the material loading and unloading area and the mixing area, efficient dust suction equipment is installed to collect the dust generated during the construction process in time and prevent it from spreading to the surrounding atmosphere.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a large coal-fired power plant boiler unit cleaning construction process, comprising:

[0007] The unloading module is specifically an unloading chamber for unloading the coal raw materials;

[0008] The stirring module is specifically a stirring chamber, which is used for stirring and crushing the coal raw materials;

[0009] The dust removal module is specifically a dust removal device, which is used for absorbing the coal dust in the unloading chamber and the stirring chamber;

[0010] The installation module is specifically an installation chamber, which is used for the installation and assembly of the boiler assembly;

[0011] The boiler module is specifically a boiler chamber, which is used for burning the coal raw materials to provide energy for power generation;

[0012] The treatment module is specifically a treatment tank, which is used for filtering the wastewater generated by the boiler operation;

[0013] The monitoring module is specifically an intelligent sensor, which is used for monitoring the dust concentration in the unloading chamber and the stirring chamber, and the water quality of the treated wastewater in the treatment tank;

[0014] The steps are as follows:

[0015] Step one: transport the required coal raw materials to the unloading chamber by the transport vehicle, and unload the materials;

[0016] Step two: transport the coal raw materials to the stirring chamber, pour them into the stirring tank, and stir and crush the coal raw materials by the stirring tank;

[0017] Step three: deeply clean the parts of the boiler unit by the cleaning device to ensure that there is no impurity residue, assemble the cleaned parts of the boiler unit, and move the boiler to the boiler chamber after assembly is completed;

[0018] Step four: pour the stirred coal raw materials into the combustion chamber of the boiler for burning to provide energy for power generation, monitor the burning condition in the combustion chamber by the built-in safety monitoring system, and clean the internal residues regularly to facilitate the full combustion of the subsequent coal raw materials;

[0019] Step five: pour the wastewater generated by the boiler combustion into the treatment tank, remove the harmful substances in the wastewater through multiple processes of physical sedimentation and chemical purification, and continue to recycle the treated wastewater through the set water circulation equipment to reduce costs;

[0020] Step six: regularly record the equipment condition, equipment working time, and equipment maintenance data, and regularly conduct physical examination on the workers to check the health condition of the workers.

[0021] Further, in step one, the coal raw materials are unloaded on the automatic conveying belt by the transport vehicle, and the coal raw materials are input into the stirring chamber by the automatic conveying belt.

[0022] Further, the stirring tank in the step two is provided with a temperature and humidity sensor, the temperature and humidity in the stirring tank are monitored, the inside of the stirring chamber in the step two is provided with a screw conveyor, the output end of the screw conveyor is connected with the stirring tank, and the coal raw material is conveyed into the stirring tank through the screw conveyor.

[0023] Further, the dust removal equipment is installed on the inner wall of the discharging chamber and the stirring chamber, the coal ash in the discharging chamber and the dust removal equipment chamber is extracted through the dust removal equipment, the air in the discharging chamber and the stirring chamber is filtered, the filter cloth for filtering and the back blowing system are arranged in the dust removal equipment, when the cleaning state, the dust on the filter cloth can be cleaned through back blowing, so that the filter cloth can continue to be used, and the filter cloth is made of nylon.

[0024] Further, the intelligent sensor is specifically a gas monitoring sensor and a liquid monitoring sensor, the air dust concentration in the discharging chamber, the stirring chamber and the installation chamber is detected through the gas monitoring sensor, and the wastewater quality in the treatment tank is monitored through the liquid monitoring sensor, in the monitoring process, when the parameters are abnormal, the system immediately issues a warning and provides a corresponding solution, the data recorded by the intelligent sensor 7 is transmitted to the control center for data saving and data sharing, and the user can check the data of the control center at any time, so that remote monitoring is realized.

[0025] Further, in the step three, the ultrasonic equipment is used for deep cleaning of the parts of the boiler unit, the cleaning time of the ultrasonic equipment is adjusted according to the size of the parts of the boiler unit, the larger the size, the longer the cleaning time, the cleaned boiler parts are placed in the corresponding position, and the excess parts are wrapped and protected by the protective film.

[0026] Further, in the step three, the air purification equipment and the dustproof isolation facility are used for maintaining the cleanliness of the construction site and preventing new pollutants from entering the equipment, and in the step three, the indoor environment is detected through the gas monitoring sensor, so that the boiler is installed in a dust-free environment.

[0027] Further, after the parts of the boiler unit are installed in the step three, the parts need to be tested, and the equipment installation precision is understood before being put into use.

[0028] Further, when the wastewater is treated in the treatment tank, alum adsorption particles are used to accelerate precipitation, corresponding chemical water is added for neutralization according to the pH value of the wastewater, harmful substances in the wastewater are removed, and the treated water can be recycled for the construction process, and the water recycling equipment comprises a water pump, a filter and a water quality monitoring device.

[0029] The technical effects and advantages of the present application are as follows:

[0030] 1. Abandon the traditional extensive construction method, adopt the advanced closed dust collection system. In each dust point of the construction site, such as the material loading and unloading area, the mixing area, etc., install high-efficiency dust suction equipment to collect the dust generated during the construction process in time and avoid its diffusion into the surrounding atmosphere.

[0031] 2. For construction wastewater, an integrated wastewater treatment device is developed, which removes harmful substances in wastewater through physical sedimentation, chemical purification and other processes. The treated water can be recycled for use in the construction process, realizing efficient use of water resources and solving the problem of air and water pollution from the source.

[0032] 3. Special cleaning materials and ultrasonic cleaning technology are used to deeply clean the parts of the boiler unit, ensuring no impurities are left. During installation, a dust-free installation environment is created using air purification equipment and dust isolation facilities to maintain the cleanliness of the construction site and prevent new pollutants from entering the equipment.

[0033] 4. The entire construction process is reorganized and optimized, and project management software is introduced for real-time monitoring of construction progress and quality. Intelligent sensors are used to collect and analyze key parameters such as dust concentration, wastewater quality, and equipment installation accuracy during the construction process, further ensuring the cleanliness and efficiency of the construction. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 The overall structure diagram of the present application.

[0035] Fig. 2 The overall system diagram of the present application.

[0036] The figure mark is: 1, discharge chamber; 2, mixing chamber; 3, dust removal equipment; 4, installation room; 5, boiler room; 6, treatment tank; 7, intelligent sensor. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] According to Figs. 1-2 A large coal-fired power plant boiler unit clean construction process is shown in FIG. 1, which includes:

[0039] Discharge module: specifically discharge chamber 1, used for discharging and processing coal raw materials;

[0040] Stirring module: specifically a stirring chamber 2, for stirring and crushing the coal raw materials;

[0041] Dust removal module: specifically a dust removal device 3, for absorbing the coal dust in the discharge chamber 1 and the stirring chamber 2;

[0042] Installation module: specifically an installation chamber 4, for the installation and assembly of the boiler unit;

[0043] Boiler module: specifically a boiler chamber 5, for burning coal raw materials to generate power;

[0044] Treatment module: specifically a treatment tank 6, for filtering the wastewater generated by the boiler operation;

[0045] Monitoring module: specifically an intelligent sensor 7, for monitoring the dust concentration in the discharge chamber 1 and the stirring chamber 2, and the quality of the treated wastewater in the treatment tank 6;

[0046] The steps are as follows:

[0047] Step one: transport the required coal raw materials to the discharge chamber 1 by the transport vehicle, and unload the materials; in step one, the coal raw materials are unloaded onto the automatic transport belt by the transport vehicle, and then input into the stirring chamber 2 through the automatic transport belt;

[0048] Step two: deliver the coal raw materials to the stirring chamber 2 and pour them into the stirring tank, and then stir and crush the materials in the stirring tank; in step two, a temperature and humidity sensor is arranged in the stirring tank to monitor the temperature and humidity in the tank; in step two, a screw conveyor is arranged in the stirring chamber 2, with its output end connected to the stirring tank, to deliver the coal raw materials to the stirring tank for stirring;

[0049] Step three: deeply clean the parts of the boiler unit using a cleaning device to ensure that there is no impurity residue, assemble the cleaned parts of the boiler unit, and then move the boiler to the boiler chamber 5 after assembly; in step three, an ultrasonic device is used to deeply clean the parts of the boiler unit, and the cleaning time of the ultrasonic device is adjusted according to the size of the parts, with larger parts requiring longer cleaning time; the cleaned parts are placed in the corresponding positions, and the excess parts are wrapped and protected by a protective film to prevent dust.

[0050] In step three, the air purification device and the dust isolation facility maintain the cleanliness of the construction site and prevent new pollutants from entering the equipment; in step three, the indoor environment is detected by a gas monitoring sensor to ensure that the boiler is installed in a dust-free environment.

[0051] After the installation of the parts of the boiler unit in step three, the equipment needs to be tested to understand the installation precision before being put into use;

[0052] Step four: the stirring of the coal raw material is poured into the combustion chamber of the boiler for combustion, to provide energy for power generation, through the built-in safety monitoring system to monitor the combustion in the combustion chamber, and clean up the residue inside regularly, to facilitate the subsequent combustion of coal raw materials;

[0053] Step five: the boiler combustion produces wastewater into the treatment pool 6, through physical sedimentation and chemical purification multi-process, the harmful substances in the wastewater are removed, through the water recycling equipment, the treated wastewater is recycled, the cost is reduced, the alum adsorption particles are used to accelerate the sedimentation in the treatment pool 6, the corresponding chemical water is added according to the pH value of the wastewater to neutralize, the harmful substances in the wastewater are removed, and the treated water can be recycled for construction process, the water recycling equipment includes water pump, filter, water quality monitoring device;

[0054] Step six: regularly record the equipment condition, equipment working time, equipment maintenance data, and regularly conduct physical examination for the workers, and check the health condition of the workers.

[0055] In a preferred embodiment, the dust removal equipment 3 is installed on the inner wall of the discharge chamber 1 and the stirring chamber 2, the coal ash in the discharge chamber 1 and the dust removal equipment 3 is extracted through the dust removal equipment 3, the air in the discharge chamber 1 and the stirring chamber 2 is filtered, the filter cloth and the back blowing system for filtering are arranged in the dust removal equipment 3, when the cleaning state, the dust on the filter cloth can be cleaned through back blowing, so that the filter cloth can continue to be used, the filter cloth material is nylon.

[0056] In a preferred embodiment, the intelligent sensor 7 is specifically a gas monitoring sensor and a liquid monitoring sensor, the air dust concentration in the discharge chamber 1, the stirring chamber 2 and the installation chamber 4 is detected through the gas monitoring sensor, the wastewater quality in the treatment pool 6 is monitored through the liquid monitoring sensor, if the parameter is abnormal in the monitoring process, the system immediately issues a warning and provides a corresponding solution, the data recorded by the intelligent sensor 7 is transmitted to the control center for data saving and data sharing, the user can check the data of the control center at any time, and remote monitoring is realized.

[0057] Refer to the drawings in the specification Figs. 1-2, innovative dust and wastewater treatment technology: Abandoning traditional extensive construction methods, an advanced closed dust collection system is adopted. At each dust point in the construction site, such as the material loading and unloading area and the mixing area, high-efficiency dust suction equipment is installed to collect the dust generated during construction in a timely manner and prevent it from spreading into the surrounding atmosphere. At the same time, an integrated wastewater treatment device has been developed for construction wastewater. Through multiple processes such as physical sedimentation and chemical purification, harmful substances in the wastewater are removed, and the treated water can be recycled for use in the construction process, achieving efficient use of water resources and addressing air and water pollution from the source.

[0058] New method of equipment cleaning guarantee: Before equipment installation, specially designed cleaning materials and ultrasonic cleaning technology are used to deeply clean the parts of the boiler unit, ensuring no impurities are left behind. During installation, dust-free installation environment creation technology is used, air purification equipment and dustproof isolation facilities are utilized to maintain the cleanliness of the construction site and prevent new pollutants from entering the equipment. This method of ensuring cleanliness from the early preparation to the entire installation process greatly improves the cleanliness of the equipment interior compared to the traditional process of only cleaning after installation, laying a solid foundation for stable equipment operation.

[0059] Construction process optimization and intelligent monitoring: The entire construction process is reorganized and optimized, and project management software is introduced for real-time monitoring of construction progress and quality. Through intelligent sensors, key parameters such as dust concentration, wastewater quality, and equipment installation precision are collected and analyzed in real time. Once abnormal parameters are detected, the system immediately issues a warning and provides corresponding solutions, achieving intelligent management of the construction process, effectively improving construction efficiency, reducing construction problems caused by human factors, and further ensuring the cleanliness and efficiency of construction.

Claims

1. A large-scale coal-fired power station boiler unit clean construction process, characterized in that: include: Unloading module: specifically, unloading chamber (1), used for unloading coal raw materials; Stirring module: specifically a stirring chamber (2), used for stirring and crushing the coal raw materials; Dust removal module: specifically, dust removal equipment (3), used to absorb coal dust in the unloading chamber (1) and the mixing chamber (2); Installation module: specifically, the installation room (4), used for installation and assembly of boiler components; Boiler module: specifically the boiler room (5), used to provide energy for burning coal raw materials to generate electricity; Treatment module: specifically, a treatment tank (6) for filtering wastewater generated by boiler operation; Monitoring module: specifically, an intelligent sensor (7), used to monitor the dust concentration in the unloading chamber (1) and the mixing chamber (2) and the quality of the wastewater after treatment in the treatment tank (6); The steps are as follows: Step 1: transport the required coal raw materials to the unloading chamber (1) by a transport vehicle for unloading; Step 2: transport the coal raw materials to the mixing chamber (2), pour them into the mixing tank, and mix and crush the coal raw materials in the mixing tank; Step 3: Deeply clean the parts of the boiler unit using cleaning equipment to ensure that no impurities remain. Assemble the cleaned parts of the boiler unit. After assembly, move the boiler to the boiler room (5); Step 4: Pour the mixed coal into the combustion chamber of the boiler for combustion to provide energy for power generation. The combustion conditions in the combustion chamber are monitored by the built-in safety monitoring system, and the internal residue is cleaned regularly to facilitate the subsequent full combustion of the coal. Step 5: Pour the wastewater generated by boiler combustion into the treatment pool (6), remove harmful substances in the wastewater through multiple processes of physical precipitation and chemical purification, and recycle the treated wastewater through the installed water circulation equipment to reduce costs; Step 6: Regularly record equipment status, equipment working hours, and equipment maintenance data, and conduct regular physical examinations on staff to check their health.

2. A large-scale coal-fired power station boiler unit cleaning construction process according to claim 1, characterized in that: In the step 1, the coal raw materials are unloaded onto the automatic conveyor belt by a transport vehicle, and the coal raw materials are input into the mixing chamber (2) by the automatic conveyor belt.

3. The large-scale coal-fired power station boiler unit cleaning construction process according to claim 1 is characterized by: The stirring tank in step 2 is provided with a temperature and humidity sensor to monitor the temperature and humidity in the stirring tank. The stirring chamber (2) in step 2 is provided with a screw conveyor, the output end of the screw conveyor is connected to the stirring tank, and the coal raw material is transported to the stirring tank for stirring through the screw conveyor.

4. A large-scale coal-fired power station boiler unit cleaning construction process according to claim 1, characterized in that: The dust removal device (3) is installed on the inner wall of the discharge chamber (1) and the mixing chamber (2). The dust removal device (3) extracts the coal ash in the discharge chamber (1) and the dust removal device (3), and filters the air inside the discharge chamber (1) and the mixing chamber (2). The dust removal device (3) is provided with a filter cloth for filtering and a back-blowing system. When in a cleaning state, the dust on the filter cloth can be cleaned by back-blowing so that the filter cloth can continue to be used. The filter cloth is made of nylon.

5. The large-scale coal-fired power station boiler unit cleaning construction process according to claim 1 is characterized by: The intelligent sensor (7) is specifically a gas monitoring sensor and a liquid monitoring sensor. The gas monitoring sensor is used to monitor the dust concentration in the unloading chamber (1), the mixing chamber (2) and the installation chamber (4). The liquid monitoring sensor is used to monitor the wastewater quality in the treatment pool (6). If any parameter abnormality occurs during the monitoring process, the system will immediately issue an early warning and provide a corresponding solution. The data recorded by the intelligent sensor (7) will be transmitted to the control center for data storage and data sharing. The user can view the data in the control center at any time to achieve remote monitoring.

6. The large-scale coal-fired power station boiler unit cleaning construction process according to claim 1 is characterized by: In step three, ultrasonic equipment is used to deeply clean the parts of the boiler unit. The cleaning time of the ultrasonic equipment is adjusted according to the size of the parts of the boiler unit. The larger the size, the longer the cleaning time. The cleaned boiler parts are placed in the corresponding positions, and the excess parts are wrapped with protective film for dust-free protection.

7. The large-scale coal-fired power station boiler unit cleaning construction process according to claim 1 is characterized by: The air purification equipment and dustproof isolation facilities in step three maintain the cleanliness of the construction site and prevent new pollutants from entering the interior of the equipment. In step three, the indoor environment is detected by a gas monitoring sensor to ensure that the boiler is installed in a dust-free environment.

8. The large-scale coal-fired power station boiler unit cleaning construction process according to claim 1 is characterized by: After the components of the boiler unit in step 3 are installed, they need to be tested to understand the installation accuracy of the equipment before being put into use.

9. The large-scale coal-fired power station boiler unit cleaning construction process according to claim 1 is characterized by: In the step 5, when treating the wastewater in the treatment tank (6), alum is used to absorb particles to accelerate precipitation, and corresponding chemical solutions are added according to the pH value of the wastewater to neutralize the wastewater, thereby removing harmful substances in the wastewater. The treated water can be recycled for use in the construction process. The water circulation equipment includes a water pump, a filter, and a water quality monitoring device.

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