Biomass and waste liquid integrated incineration boiler

Abstract

The utility model discloses a biomass and waste liquid integrated incineration boiler which comprises a feeding system, a hearth, a reciprocating fire grate, a waste liquid pumping system, a high-heat-value waste liquid combustor, a boiler barrel, a shock wave ash removal device and an ash discharging system. The reciprocating fire grate is arranged at the bottom of the hearth and used for supporting biomass, the high-calorific-value waste liquid combustor is arranged in the middle of the hearth and communicated with the waste liquid pumping system, the waste liquid pumping system is used for conveying waste liquid to the high-calorific-value waste liquid combustor for combustion, and the boiler barrel is arranged at the top of the hearth. According to the biomass and waste liquid boiler, the metering feeder is adopted, biomass and waste liquid can be incinerated and utilized at the same time, arrangement is compact and reasonable, the occupied area is small, fire poking is not needed in the operation process, operation is easy and convenient, and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection technology, specifically a kind of biomass, waste liquid integrated incineration boiler. BACKGROUND

[0002] Under the background of current global energy crisis and environmental pollution increasingly serious, biomass energy as a kind of clean, renewable energy, its use has received extensive attention. Biomass energy can not only effectively alleviate the consumption pressure of fossil fuels, but also reduce greenhouse gas emissions, which is of great significance to environmental protection. At the same time, the treatment of organic waste liquid is also an important issue in the field of environmental protection, especially how to maximize the use of some high calorific value organic waste liquid, to obtain the maximum economic efficiency while treating hazardous waste.

[0003] Therefore, to develop a kind of integrated incineration boiler which can not only incinerate biomass but also treat waste liquid, can not only improve energy utilization efficiency, but also realize the resource utilization of waste, has important practical value and social benefits. The design of such integrated incineration boiler should consider the following aspects: first of all, the hearth structure and combustion mode need to be optimized to adapt to the combustion characteristics of different types of biomass and organic waste liquid; secondly, considering the economy and practicability, the design should be easy to operate and maintain. SUMMARY

[0004] To solve the defects of the prior art, the utility model provides a kind of biomass, waste liquid integrated incineration boiler, can take into account the incineration utilization of biomass and waste liquid, compact, reasonable arrangement, small footprint, does not need to poke fire when running, easy to operate, convenient to maintain.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: a kind of biomass, waste liquid integrated incineration boiler, including feeding system, hearth, reciprocating grate, waste liquid pumping system, high calorific value waste liquid burner, boiler drum, shock wave ash cleaning device and ash removal system, the feeding system is located hearth side and is used to feed biomass with hearth, the reciprocating grate is arranged at hearth bottom and is used to support biomass, the high calorific value waste liquid burner is arranged in the middle of hearth and is communicated with waste liquid pumping system, the waste liquid pumping system is used to deliver waste liquid to high calorific value waste liquid burner and burn, the boiler drum is arranged at hearth top, the shock wave ash cleaning device is arranged in hearth, and the ash removal system is arranged below reciprocating grate.

[0006] Further, the feeding system includes a pre-bunker and a scraper feeder, the pre-bunker is used to store biomass bulk material and is connected with the scraper feeder at the bottom end, and the scraper feeder is used to send the biomass bulk material into the hearth.

[0007] Further, the reciprocating grate includes a plurality of inclined movable grate pieces and fixed grate pieces.

[0008] Further, the waste liquid pumping system comprises a waste liquid delivery pump, a control valve group and a delivery pipeline; the waste liquid is pumped by the waste liquid delivery pump, passes through the control valve group and is delivered from the delivery pipeline to the high-calorific-value waste liquid burner, the inlet and the outlet of the waste liquid delivery pump are provided with filter screens, the control valve group comprises several regulating valves and flow meters, the periphery of the waste liquid delivery pump is provided with a steam tracing device, and the steam tracing device is used for ensuring the flowability of the waste liquid.

[0009] Further, the furnace chamber is provided with full-sealing membrane water cooling walls on the periphery and the middle partition wall, the membrane water cooling walls are communicated with the drum, the top of the furnace chamber is communicated with a first channel, the bottom of the first channel is communicated with a second channel, and a flag-type heating surface is arranged in the second channel.

[0010] Further, the two side walls of the furnace chamber are arranged with a plurality of secondary air supply openings, the secondary air supply openings are located at the same height and are arranged in a ring-shaped and inclined manner.

[0011] In conclusion, the biomass and waste liquid integrated incineration boiler has the following technical effects:

[0012] The biomass and waste liquid integrated incineration boiler can burn and utilize the biomass and the waste liquid, has compact and reasonable arrangement, occupies small area, does not need to be poked when running, is easy to operate and convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the biomass and waste liquid integrated incineration boiler of the utility model;

[0014] Figure 2 is a top view of the biomass and waste liquid integrated incineration boiler of the utility model;

[0015] Figure 3 is a structural schematic view of a waste liquid pumping system of the biomass and waste liquid integrated incineration boiler of the utility model;

[0016] The drawings of the specification are explained as follows: 1, a feeding system; 2, a furnace chamber; 3, a reciprocating grate; 4, a waste liquid pumping system; 5, a high-calorific-value waste liquid burner; 6, a drum; 7, a shock wave ash cleaning device; 8, an ash discharging system; 9, a front furnace hopper; 10, a scraper feeder; 11, a movable grate piece; 12, a fixed grate piece; 13, a material gate; 14, a waste liquid delivery pump; 15, a control valve group; 16, a delivery pipeline; 23, a membrane water cooling wall; 24, a first channel; 25, a second channel; 26, a flag-type heating surface; 27, a double-hammer flap valve; and 28, a lower return chain scraper conveyor. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail below in combination with the drawings.

[0018] The embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation of the utility model.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two elements. For a person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] Example 1:

[0024] like Figure 1 As shown in Figure 2, a biomass and waste liquid integrated incineration boiler includes a feeding system 1, a furnace 2, a reciprocating grate 3, a waste liquid pumping system 4, a high-calorific-value waste liquid burner 5, a boiler drum 6, a shock wave ash removal device 7, and an ash removal system 8. The feeding system 1 is located on one side of the furnace 2 and is used to feed biomass into the furnace 2. The reciprocating grate 3 is located at the bottom of the furnace 2 and is used to support the biomass. The high-calorific-value waste liquid burner 5 is located in the middle of the furnace 2 and is connected to the waste liquid pumping system 4. The waste liquid pumping system 4 is used to transport waste liquid to the high-calorific-value waste liquid burner 5 for combustion. The boiler drum 6 is located at the top of the furnace 2. The shock wave ash removal device 7 is located inside the furnace 2. The ash removal system 8 is located below the reciprocating grate 3.

[0025] The integrated biomass and waste liquid incineration boiler of this embodiment can take into account the incineration and utilization of biomass and waste liquid. It has a compact and reasonable layout, occupies a small area, does not require ignition during operation, and is easy to operate and maintain.

[0026] The feeding system 1 includes a furnace front hopper 9 and a scraper feeder 10. The furnace front hopper 9 is used to store bulk biomass and its bottom end is connected to the scraper feeder 10. The scraper feeder 10 is used to feed the bulk biomass into the reciprocating grate 3 at the bottom of the furnace 2.

[0027] The reciprocating grate 3 includes several inclined movable grate plates 11 and fixed grate plates 12. In this embodiment, the thickness of the biomass layer on the reciprocating grate 3 is adjusted by means of the feed gate 13. The biomass feed rate can also be adjusted by changing the travel speed of the reciprocating grate 3 to adapt to boiler load and biomass changes. The advantages of this structure are that it can make the fuel burn completely, does not require stirring during operation, has a simple structure, is easy to maintain and has low power consumption.

[0028] like Figure 3 As shown, the waste liquid pumping system 4 includes a waste liquid transfer pump 14, a control valve group 15, and a delivery pipeline 16. Waste liquid is pumped by the waste liquid transfer pump 14, passes through the control valve group 15, and is then delivered to the high-calorific-value waste liquid burner 5 via the delivery pipeline 16. The inlet and outlet of the waste liquid transfer pump 14 are equipped with filters. The control valve group 15 includes several regulating valves and flow meters. A steam tracing device is installed around the waste liquid transfer pump 14 to ensure the fluidity of the waste liquid. After passing through the waste liquid transfer pump 14, the waste liquid is heated and impurities are filtered out. It is then automatically adjusted and metered by the control valve group 15 and delivered to the high-calorific-value waste liquid burner 5 via the delivery pipeline 16. The waste liquid transfer pump 14 is a corrosion-resistant pump, and its motor is an explosion-proof motor to ensure system safety.

[0029] The high-calorific-value waste liquid burner 5 comprises a burner body, a waste liquid lance, a manual damper, an ignition device, a propeller, and a flame detector; the waste liquid lance sprays the waste liquid into the furnace 2 in the form of extremely fine liquid droplets by using compressed air, and the ignition device and the burner body ignite the atomized waste liquid to perform the incineration in the furnace; the waste liquid is prevented from being directly sprayed into the furnace 2 to cause unnecessary damage to the membrane water wall 23.

[0030] The drum 6 is not heated, and the furnace 2 is arranged transversely at the top of the drum 6; the feed water enters the drum 6 through the water inlet pipe after being preheated by the fire tube economizer; the drum 6 is provided with a partition plate to separate the water vapor; and each of the two end covers of the drum 6 is provided with a manhole for maintenance.

[0031] The waste liquid has high calorific value and strong volatility, and is more likely to volatilize after being heated in the furnace; if the furnace suddenly goes out, the combustible gas in the furnace will increase in a short time, which will affect the flame detector and the ignition device; the ignition device is interlocked with the flame detector; and the ignition device is prevented from working when the furnace 2 suddenly goes out or other phenomena occur, so that the explosion of the furnace is effectively controlled.

[0032] The membrane water wall 23 with a full-sealing structure is arranged around and in the middle of the furnace 2; the membrane water wall 23 is communicated with the drum 6; the furnace 2 has an open structure; the first channel 24 is communicated with the top of the furnace 2; the bottom of the first channel 24 is communicated with the second channel 25; the flag-type heating surface 26 is arranged in the second channel 25; the flag-type heating surface 26 is composed of a plurality of parallel water pipes; the high-temperature flue gas generated after the biomass and the waste liquid are burned is folded by 180° from the top of the furnace 2 to the first channel 24, and then folded by 180° from the bottom of the first channel 24 to the second channel 25; the two groups of flag-type convection heating surfaces arranged in the second channel 25 exchange heat with the high-temperature flue gas; and the parallel water pipes in the flag-type heating surface 26 are communicated with the drum 6.

[0033] A plurality of secondary air inlets are arranged on the side walls of the furnace 2; the secondary air inlets are arranged at the same height and in a ring shape; the secondary air enters the furnace 2 through the secondary air inlets; the flue gas generated by the incineration spirally flows under the driving of the secondary air; the flue gas is fully mixed with the secondary air; and the harmful substances in the flue gas are completely decomposed at high temperature.

[0034] The shock wave ash cleaning device 7 comprises a plurality of blowing points corresponding to the horizontal water pipes of the flag-type heating surface 26; the blowing points are communicated with air pipes and blowers; the blowers generate air flow shock waves to clean the horizontal water pipes of the flag-type heating surface 26; the blowing points are provided with maintenance doors to facilitate manual cleaning; the ash removal system 8 comprises a double-hammer flap valve 27 and a lower chain scraper conveyor 28; the completely incinerated ash falls on the lower chain scraper conveyor 28 through the double-hammer flap valve and is sent out; the lower chain scraper conveyor 28 is provided with maintenance openings on both sides to ensure the sealing property and facilitate maintenance and unblocking.

[0035] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments are within the scope of the technical scheme of the present application.

Claims

1. A biomass and waste liquid integrated incineration boiler, characterized in that, The furnace includes a feeding system, a furnace chamber, a reciprocating grate, a waste liquid pumping system, a high-calorific-value waste liquid burner, a boiler drum, a shock wave cleaning device, and an ash discharge system. The feeding system is located on one side of the furnace chamber and is used to feed biomass into the furnace chamber. The reciprocating grate is located at the bottom of the furnace chamber and is used to support the biomass. The high-calorific-value waste liquid burner is located in the middle of the furnace chamber and is connected to the waste liquid pumping system. The waste liquid pumping system is used to transport waste liquid to the high-calorific-value waste liquid burner for combustion. The boiler drum is located at the top of the furnace chamber. The shock wave cleaning device is located inside the furnace chamber. The ash discharge system is located below the reciprocating grate.

2. The integrated biomass and waste liquid incineration boiler according to claim 1, characterized in that, The feeding system includes a furnace front hopper and a scraper feeder. The furnace front hopper is used to store bulk biomass and its bottom end is connected to the scraper feeder. The scraper feeder is used to feed the bulk biomass into the furnace.

3. The integrated biomass and waste liquid incineration boiler according to claim 1, characterized in that, The reciprocating grate includes several inclined movable grate plates and fixed grate plates.

4. The integrated biomass and waste liquid incineration boiler according to claim 1, characterized in that, The waste liquid pumping system includes a waste liquid transfer pump, a control valve group, and a transfer pipeline. After being pumped by the waste liquid transfer pump and passing through the control valve group, the waste liquid is transported from the transfer pipeline to the high-calorific-value waste liquid burner. The inlet and outlet of the waste liquid transfer pump are equipped with filter screens. The control valve group includes several regulating valves and flow meters. The waste liquid transfer pump is equipped with a steam tracing device on its outer periphery to ensure the fluidity of the waste liquid.

5. The integrated biomass and waste liquid incineration boiler according to claim 1, characterized in that, The furnace chamber is surrounded by a fully sealed membrane water-cooled wall with a central partition wall. The membrane water-cooled wall is connected to the boiler drum. The top of the furnace chamber is connected to a first channel. The bottom of the first channel is connected to a second channel. The second channel is provided with a flag-shaped heating surface, which is composed of several parallel water pipes.

6. The integrated biomass and waste liquid incineration boiler according to claim 1, characterized in that, Several secondary air inlets are arranged on both sides of the furnace sidewalls, and these secondary air inlets are located at the same height and are arranged circumferentially at an angle.

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