Green building material preparation method, green building material, and composite building material containing green building material

Abstract

Embodiments of the present application relate to the technical field of building materials, and particularly to a green building material preparation method, the green building material, and a composite building material containing the green building material. The green building material specifically comprises black soldier fly pupal shells and plant fibers. In this method, a technician can acquire black soldier fly pupal shells and plant fibers, and prepare the green building material by means of the black soldier fly pupal shells and the plant fibers. The green building material provided by the embodiments of the present application is a natural organic building material, possessing characteristics such as healthiness, environmental protection and safety, and can effectively reduce carbon emissions and save energy during the building material preparation process.

Description

Preparation method of green building material, green building material and composite building material containing the same Technical Field

[0001] The embodiments of the present application relate to the technical field of green building materials, and in particular to a method for preparing green building materials, green building materials, and composite building materials containing the green building materials. Background Art

[0002] With the rapid development of society and cities, people's living standards are constantly improving, but it also brings many negative impacts to people, such as environmental pollution, destruction of the ecological environment, and various diseases that endanger people's physical health, survival and development. Therefore, people advocate protecting the living environment and reducing energy consumption.

[0003] Since the reform and opening up, building materials, a pillar industry of my country's national economy, have experienced rapid development, leading to global recognition for some key building materials, such as cement and glass, which rank first in the world in annual production. However, the traditional building materials industry, focused on maximizing profits, consumes vast quantities of resources, neglects ecological benefits and the comprehensive utilization of resources, resulting in severe environmental pollution and significant waste of resources.

[0004] Summary of the Invention

[0005] In order to reduce environmental pollution and save energy consumption, the embodiments of the present application provide a method for preparing a green building material, a green building material, and a composite building material containing the green building material.

[0006] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] In the first aspect of the present application, a method for preparing green building materials is provided, which green building materials include black soldier fly pupae and plant fibers. In this method, technicians can obtain black soldier fly pupae and plant fibers; technicians prepare green building materials based on the black soldier fly pupae and the plant fibers.

[0008] In the embodiments of the present application, the black soldier fly pupae shells and plant fibers in the green building materials are both natural organic building materials with the characteristics of health, environmental protection, and safety, and can effectively reduce carbon emissions in the building materials preparation process, reduce environmental pollution, and save energy consumption.

[0009] In some embodiments, obtaining black soldier fly pupal shells includes: feeding black soldier fly larvae with plant-based feed, wherein the plant-based feed includes kitchen waste; and collecting black soldier fly pupal shells after the black soldier fly larvae pupate.

[0010] In some embodiments, obtaining the plant fiber includes: in the process of feeding black soldier fly larvae with plant-based feed, obtaining feed residues remaining after the black soldier fly larvae eat the plant-based feed, thereby obtaining the plant fiber in the feed residues.

[0011] In some embodiments, the plant-based feed comprises a plant-based feed main ingredient and a plant fiber supplementary ingredient;

[0012] Before obtaining the plant fiber, the method further comprises: crushing the feed residue of the plant feed main ingredient to obtain the plant fiber auxiliary material.

[0013] In some embodiments, the plant-based feed includes kitchen waste, and the plant-based feed includes unpretreated plant-based feed and / or pretreated plant-based feed; when the plant-based feed includes unpretreated plant-based feed, the raising of black soldier fly larvae by plant-based feed includes: using unpretreated plant-based feed to raise black soldier fly larvae; when the plant-based feed includes pretreated plant-based feed, the raising of black soldier fly larvae by plant-based feed includes: pretreating the plant-based feed, wherein the pretreatment includes crushing treatment and / or water-oil separation treatment; and using the pretreated plant-based feed to raise black soldier fly larvae.

[0014] In some embodiments, obtaining green building materials based on the plant fibers and the black soldier fly pupae shells includes: drying the plant fibers and the black soldier fly pupae shells; and crushing the dried plant fibers and the black soldier fly pupae shells to obtain green building materials.

[0015] In some embodiments, obtaining green building materials based on the plant fibers and the black soldier fly pupae shells further includes: disinfecting the plant fibers and the black soldier fly pupae shells.

[0016] In a second aspect of the present application, a green building material is further provided. The green building material is prepared using the method described in the first aspect.

[0017] In a third aspect of the present application, a composite building material is further provided. Calculated by weight, the composite building material comprises: 10-70% of auxiliary building materials and 30-90% of the green building materials described in the second aspect.

[0018] In some embodiments, the auxiliary building materials include at least one of bricks, concrete, gypsum board, and latex paint.

[0019] It should be understood that the contents described in the Summary of the Invention are not intended to define the key or important features of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] FIG1 is a schematic flow chart of a method for preparing green building materials provided in some embodiments of the present application. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] It should be noted that, unless there is a conflict, the various features of the embodiments of the present invention may be combined with each other and are all within the scope of protection of the present invention. In addition, although the functional modules are divided in the device schematics and the logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than the module division in the device schematics or the order in the flowcharts.

[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used in this specification and in the description of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. As used herein, the term "including" and similar terms should be understood as open inclusions, i.e., "including but not limited to." The term "based on" should be understood as "based at least in part on." The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment." The terms "first," "second," and the like may refer to different or identical objects and are used only to distinguish the objects referred to, without implying a specific spatial order, temporal order, order of importance, and the like of the objects referred to. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0025] Carbon emissions from traditional building materials and construction operations account for 47% of global greenhouse gas emissions. Both traditional building materials and existing green building materials must account for the significant carbon emissions released during the manufacturing process, resulting in minimal carbon reduction. The present application provides a method for preparing green building materials, green building materials, and composite building materials containing green building materials. These materials can be prepared from natural organic materials to reduce carbon emissions. To facilitate understanding, the present application is described below with reference to specific examples.

[0026] For example, FIG1 shows a process of a method for preparing a green building material provided in an embodiment of the present application. Referring to FIG1 , the method includes the following steps:

[0027] Step 11: Obtain the black soldier fly pupa shell;

[0028] The black soldier fly, a member of the Diptera order, family Schizophoridae, genus Soldier Fly, is a saprotrophic insect that feeds on animal feces and household waste. Its life cycle progresses through five stages: egg, larva, prepupa, pupa, and adult. Its entire life cycle lasts approximately 40 days. Under favorable environmental conditions, a generation is completed in about 25 days, while under adverse conditions, a generation takes about 7 months.

[0029] The larval stage is divided into six instars, based on the number of molts. Newly hatched larvae are similar in size to eggs. First-instar larvae rarely feed, while second-instar larvae begin to feed extensively. The final instar larvae are called prepupae. Depending on environmental conditions, the larval lifespan ranges from seven days to seven months. At five days old, larvae begin to eat more, and after ten days, they enter the prepupae stage. Prepupae are dark brown, with hardened body walls. The pupal stage, encompassing both the prepupae and pupal stages, lasts approximately 15 days. After the fifth instar, the body of a black soldier fly larva gradually turns black and hardens, stopping feeding and entering the prepupae stage. During this prepupae stage, black soldier flies require no food and seek a dry, secluded location to pupate, exhibiting behavior that involves migrating from their feed. After pupation, the pupal case is dark brown, enclosing the pupa, which is hard and immobile. The pupa can be seen when dissected. The pupa eventually becomes an adult.

[0030] In some embodiments, technicians can directly collect black soldier fly pupae shells as raw materials for green building materials. For example, they can purchase black soldier fly pupae shells on the market.

[0031] In other embodiments, technicians can also obtain black soldier fly pupae by raising black soldier fly larvae. Specifically, the above step 11 specifically includes the following steps:

[0032] Step 111: raising black soldier fly larvae with plant-based feed;

[0033] Step 112: After the black soldier fly larvae pupate, collect the black soldier fly pupal shells.

[0034] In some embodiments, technicians use plant-based feed to raise black soldier fly larvae and collect the black soldier fly pupal shells after the black soldier fly larvae pupate. The plant-based feed includes plant seeds, fruits, or tissue parts, such as fruits and / or vegetables. The plant-based feed can be kitchen waste or non-kitchen waste. When the plant-based feed is non-kitchen waste, the plant-based feed can also be rotten or damaged plant fruits or tissue parts, such as rotten fruits, vegetable leaves, and / or melon rinds collected from fruit markets.

[0035] Kitchen waste primarily comes from feed processing scraps and food waste generated by the catering industry, households, and canteens of enterprises and institutions. With the rapid economic development of our country and the gradual acceleration of urbanization, the production of kitchen waste has shown a year-on-year upward trend. In large and megacities in China, daily kitchen waste production has reached thousands of tons, and nationally, annual kitchen waste production reaches tens of millions of tons. Simply landfilling this waste would occupy a significant amount of land, generate leachate and landfill gas, and require subsequent treatment, consuming significant manpower and material resources. Using kitchen waste to raise black soldier fly larvae reduces costs and minimizes environmental pollution.

[0036] Black soldier flies can digest a large amount of kitchen waste and convert it into new insect protein, new microorganisms and insect feces organic fertilizer, which can solve the problem that domestic waste will affect the environment, air and water quality. At the same time, it produces insect protein and fertile microecological organic fertilizer, purifying the ecological environment and reducing the burden on the environment. However, although black soldier flies have many additional economic values ​​as mentioned above, such as the dried and crushed products of black soldier fly larvae are used in pig feed, and the black soldier fly feces carbon fertilizer is a high-quality organic fertilizer and soil conditioner, the large amount of pupal shells produced during the growth of black soldier flies has not been effectively utilized. The implementation of this application can further improve the economic value of black soldier flies by using black soldier fly pupal shells as raw materials for green building materials.

[0037] In some embodiments, the plant-based feed includes unpretreated plant-based feed and / or pretreated plant-based feed; when the plant-based feed includes unpretreated plant-based feed, the breeder can directly use the unpretreated plant-based feed (such as kitchen waste) to raise black soldier fly larvae.

[0038] In other embodiments, when the plant-based feed includes pre-treated plant-based feed, before step 111, the method further includes:

[0039] Step 1101: pre-processing the plant-based feed, wherein the pre-processing includes crushing and / or water-oil separation;

[0040] Step 1102: using the pre-treated plant-based feed to feed black soldier fly larvae.

[0041] In this embodiment, after collecting the plant-based feed, the technicians can first pre-treat the plant-based feed, and then feed the pre-treated plant-based feed to the black soldier fly larvae. Pre-treatment can, for example, be screening and sorting the collected plant-based feed to remove inedible impurities. Pre-treatment can also include crushing and / or water-oil separation of the plant-based feed, wherein the crushing method can, for example, be grinding or crushing using a crusher. Water-oil separation can separate the water and oil in the plant-based feed (such as kitchen waste). In this embodiment, the pre-treatment of the plant-based feed can help the black soldier flies to eat the plant-based feed quickly and conveniently.

[0042] Step 12: Obtain plant fiber;

[0043] Plant fiber is a filamentous or flocculent substance formed by combining cellulose with various nutrients. It supports, connects, wraps, and fills plants. It is widely found in plant stems, roots, fruits, and shells. As a raw material for green building materials, plant fiber primarily serves as a reinforcement.

[0044] In some embodiments, to fully utilize the plant-based feed, technicians can also collect the feed residue left after the black soldier fly larvae consume the plant-based feed during the process of raising black soldier fly larvae with the plant-based feed, thereby obtaining plant fiber from the feed residue. When the black soldier fly larvae consume the plant-based feed, the feed residue will contain plant fiber. The feed residue will naturally air-dry after being left in a natural environment for 1-2 days. By collecting the air-dried feed residue, technicians can obtain plant fiber.

[0045] In other embodiments, plant fibers may be obtained by any other suitable means, for example, directly obtaining processed plant fibers from the market.

[0046] In some embodiments, before step 12, the method further includes:

[0047] Step 113: crushing the feed residue of the plant-based feed main ingredient to obtain plant fiber auxiliary material.

[0048] In some embodiments, the utilization rate of the plant feed is further improved. The plant feed includes a plant feed main ingredient and a plant fiber supplementary material, wherein the plant fiber supplementary material is obtained by processing (such as crushing) the feed residue left after the black soldier flies eat the plant feed main ingredient.

[0049] Specifically, technicians can use plant-based feed main ingredients to raise black soldier fly larvae. During the process of raising black soldier fly larvae, technicians can collect feed residues and obtain plant fiber supplementary materials after processing the feed residues. In the subsequent breeding process, technicians can mix the obtained plant fiber supplementary materials with the plant-based feed main ingredients and feed them to the black soldier fly larvae. In addition, after the black soldier fly larvae eat the mixture of the plant-based feed main ingredients and the plant fiber supplementary materials, the remaining feed residues are feed residues. Technicians can also collect feed residues and obtain plant fibers in the feed residues. Technicians can collect feed residues multiple times in a row, obtain plant fiber supplementary materials based on the feed residues, and then use the plant fiber supplementary materials to feed the black soldier fly larvae for consumption, thereby realizing a feeding cycle.

[0050] Step 13: Prepare green building materials using the black soldier fly pupal shells and the plant fibers.

[0051] In some embodiments, step 13 specifically includes the following steps:

[0052] Step 131: Drying the plant fiber and the black soldier fly pupal shell;

[0053] Step 132: crushing the dried plant fibers and the black soldier fly pupal shells to obtain green building materials.

[0054] In this embodiment, technicians can dry the plant fibers and the black soldier fly pupae, and then grind the dried plant fibers and the black soldier fly pupae to obtain a powdered mixture of the plant fibers and the black soldier fly pupae. The powdered mixture is a green building material.

[0055] In some embodiments, before or after the plant fibers and the black soldier fly pupae are crushed, the plant fibers and the black soldier fly pupae can be disinfected, for example, by ultraviolet disinfection.

[0056] The preparation method of the green building materials provided in the embodiments of the present application can use a large amount of kitchen waste to produce green building materials that are non-toxic, non-polluting, non-radioactive, and beneficial to environmental protection and human health.

[0057] An embodiment of the present application also provides a green building material, which includes black soldier fly pupae and plant fibers, and is prepared by the above-mentioned green building material preparation method.

[0058] The present application also provides a composite building material comprising, by weight, 30-90% of the green building material described in the above embodiments and 10-70% of auxiliary building materials. The auxiliary building materials may be non-green building materials. The auxiliary building materials specifically include, but are not limited to, at least one of bricks, concrete, gypsum board, and latex paint.

[0059] The composite building materials provided in the embodiments of this application include 30-90% green building materials. By replacing most auxiliary building materials that require high-temperature production processes with green building materials, these embodiments can reduce carbon emissions and conserve energy during the production of traditional building materials. Furthermore, the performance of the composite building materials meets the requirements of their intended use. The black soldier fly pupa shell powder in the green building materials can also effectively eliminate formaldehyde.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of simplicity, they are not provided in detail. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing green building materials, characterized in that: The green building material comprises black soldier fly pupae and plant fibers, and the method comprises: Obtain black soldier fly pupal shells; Obtain plant fibers; Green building materials are prepared by utilizing the black soldier fly pupal shells and the plant fibers.

2. The method according to claim 1, characterized in that The method of obtaining the black soldier fly pupal shell comprises: raising black soldier fly larvae with a plant-based feed comprising kitchen waste; After the black soldier fly larvae pupate, the black soldier fly pupal cases are collected.

3. The method according to claim 2, characterized in that The obtaining of plant fibers comprises: In the process of feeding black soldier fly larvae with plant-based feed, feed residues left after the black soldier fly larvae eat the plant-based feed are obtained, thereby obtaining plant fibers in the feed residues.

4. The method according to claim 3, characterized in that Plant-based feed includes plant-based feed main ingredients and plant fiber supplementary ingredients; Before obtaining the plant fiber, the method further comprises: The feed residue of the plant feed main material is crushed to obtain the plant fiber auxiliary material.

5. The method according to any one of claims 1 to 4, characterized in that The plant-based feed includes kitchen waste, and the plant-based feed includes unpretreated plant-based feed and / or pretreated plant-based feed; When the plant-based feed includes unpretreated plant-based feed, the method of raising black soldier fly larvae with the plant-based feed includes: Using untreated plant-based feed to raise black soldier fly larvae; When the plant-based feed comprises pretreated plant-based feed, the method of raising black soldier fly larvae by using the plant-based feed comprises: Pre-processing the plant-based feed, wherein the pre-processing includes pulverization and / or water-oil separation; The pretreated plant-based feed is used to feed black soldier fly larvae.

6. The method according to any one of claims 1 to 4, characterized in that The green building materials obtained based on the plant fiber and the black soldier fly pupal shell include: Drying the plant fiber and the black soldier fly pupal shell; The dried plant fibers and the black soldier fly pupal shells are crushed to obtain green building materials.

7. The method according to claim 6, characterized in that The green building materials obtained based on the plant fiber and the black soldier fly pupal shell also include: The plant fiber and the black soldier fly pupal shell are disinfected.

8. A green building material, characterized in that: The green building material is prepared by the method according to any one of claims 1 to 7.

9. A composite building material, characterized in that: In terms of weight percentage, the composite building material comprises: 30-90% of the green building materials described in claim 8; Auxiliary building materials 10-70%.

10. The composite building material according to claim 9, characterized in that: The auxiliary building materials include at least one of bricks, concrete, gypsum board and latex paint.

Images